ASA General
(Refer to Figure 62, 62A, and 62B as necessary.) Which doubler(s) require(s) heat treatment before installation?
-102
Solve the equation. [(4 x -3)+(-9 x 2)] ÷ 2 =
-15
(Refer to Figure 58.) Solve the equation.
14.002.
.002KV equals
2.0 volts
What is the operating resistance of a 30-watt light bulb designed for a 28-volt system?
26 ohms.
What is the ratio of 10 feet to 30 inches?
4:1
Which tool is used to find the center of a shaft or other cylindrical work?
Combination set.
Where should you find this entry? 'Removed right wing from aircraft and removed skin from outer 6 feet. Repaired buckled spar 49 inches from tip in accordance with figure 8 in the manufacturer's structural repair manual No. 28-1.'
FAA Form 337.
(Refer to Figure 15.) When the landing gear is down, the green light will not come on if an open occurs in wire
No. 16
What is generally used in the construction of aircraft exhaust collectors, stacks, and manifolds?
Stainless steel.
The parts department's profit is 12 percent on a new part. How much does the part cost if the selling price is $145.60?
$130.00
(Refer to Figure 62, 62A, and 62B as necessary.) Using only the information given (when bend allowance, set back, etc. have been calculated) which doubler is it possible to construct and install?
-101
(Refer to Figure 62.) The -100 in the title block (Area 1) is applicable to which doubler part number(s)?
-101
(Refer to Figure 59.) Solve the equation.
-5.20.
Solve the equation. -6[-9(-8 + 4) - 2(7 + 3)] =
-96
Which number represents the vernier scale graduation of a micrometer?
.0001
What is the allowable manufacturing tolerance for a bushing where the outside dimensions shown on the blueprint are: 1.0625 + .0025 -.0003?
.0028.
The number 3.47 x 10 to the negative fourth power is equal to
.00347.
(Refer to Figure 2.) What is the total capacitance of a circuit containing three capacitors with capacitances of .02 microfarad, .05 microfarad, and .10 microfarad, respectively?
.0125 uF
(Refer to Figure 53.) Solve the equation.
.0419.
What is the total capacitance of a circuit containing three capacitors in parallel with capacitances of .02 microfarad, .05 microfarad, and .10 microfarad, respectively?
.170 uF.
(Refer to Figure 49.) The measurement reading on the micrometer is
.2792.
(Refer to Figure 48.) What does the micrometer read?
.3004.
What is the total capacitance of a certain circuit containing three capacitors with capacitances of .25 microfarad, .03 microfarad, and .12 microfarad, respectively? (Note: C(T) = C(1) + C(2) + C(3))
.4 uF
Find the square root of 1,824.
.42708 x 10 to the second power.
A certain aircraft bolt has an overall length of 1-1/2 inches, with a shank length of 1-3/16 inches, and a threaded portion length of 5/8 inch. What is the grip length?
.5625 inch.
Find the value of 10 raised to the negative sixth power.
0.000001.
(Refer to Figure 34.) What is the dimension of the chamfer?
0.0625 X 45°
(Refer to Figure 46.) The measurement reading on the illustrated micrometer is
0.2851.
(Refer to Figure 34.) What is the maximum diameter of the hole for the clevis pin?
0.3175.
(Refer to Figure 67). Solve the equation.
0.42.
The radius of a piece of round stock is 7/32. Select the decimal which is most nearly equal to the diameter.
0.4375.
Which decimal is most nearly equal to a bend radius of 31/64?
0.4844.
A lead-acid battery with 12 cells connected in series (no-load voltage = 2.1 volts per cell) furnishes 10 amperes to a load of 2-ohms resistance. The internal resistance of the battery in this instance is
0.52 ohm.
If three resistors of 3 ohms, 5 ohms, and 22 ohms are connected in series in a 28-volt circuit, how much current will flow through the 3-ohm resistor?
0.93 amere.
Convert 7 to binary form.
0111.
(Refer to Figure 22.) Which illustration is correct concerning bias application and current (positive charge) flow?
1
(Refer to Figure 30.) Identify the bottom view of the object.
1
Which of the following statements is/are generally true regarding the charging of several aircraft batteries together? 1. Batteries of different voltages (but similar capacities) can be connected in series with each other across the charger, and charged using the constant current method. 2. Batteries of different ampere-hour capacity and same voltage can be connected in parallel with each other across the charger, and charged using the constant voltage method. 3. Batteries of the same voltage and same ampere-hour capacity must be connected in series with each other across the charger, and charged using the constant current method.
1 and 2.
(Refer to Figure 34.) What would be the minimum diameter of 4130 round stock required for the construction of the clevis that would produce a machined surface?
1 inch.
Which of the following defects are not acceptable for metal lines? 1. Cracked flare 2. Seams 3. Dents in the heel of a bend less than 20% of the diameter 4. Scratches/nicks on the inside of a bend less than 10% of wall thickness 5. Dents in straight section that are 20% of tube diameter
1, 2, 3, and 5.
The action required by an AD may take what form? 1. Inspection. 2. Part(s) replacement. 3. Design modification. 4. Change in operating procedure(s). 5. Overall change in the content, form and disposition of aircraft maintenance records.
1, 2, 3, and/or 4.
In physics, which of the following factors are necessary to determine power? 1. Force exerted. 2. Distance moved. 3. Time required.
1, 2, and 3.
Which of the following are sometimes used as authorization to deviate from an aircraft's original type design? 1. FAA Form 337. 2. Supplemental Type Certificate. 3. Airworthiness Directive. 4. Technical Standard Order
1, 2, and 3.
Which of the following describe the effects of annealing steel and aluminum alloys? 1. decrease in internal stress. 2. softening of the metal. 3. improved corrosion resistance.
1, 2.
Which of the following may a certificated airframe and powerplant mechanic perform on aircraft and approve for return to service? 1. a 100-hour inspection. 2. an annual inspection, under specified circumstances. 3. a progressive inspection, under specified circumstances.
1, 3.
Which of the following methods may be suitable to use to detect cracks open to the surface in aluminum forgings and castings? 1. Dye penetrant inspection. 2. Magnetic particle inspection. 3. Metallic ring (coin tap) inspection. 4. Eddy current inspection. 5. Ultrasonic inspection. 6. Visual inspection.
1, 4, 5, 6.
A 12-volt electric motor has 1,000 watts input and 1 horsepower output. Maintaining the same efficiency, how much input power will a 24-volt, 1-horsepower electric motor require? (Note: 1 horsepower = 746 watts)
1,000 watts.
What force is exerted on the piston in a hydraulic cylinder if the area of the piston is 1.2 square inches and the fluid pressure is 850 PSI?
1,020 pounds.
Find the square root of 124.9924.
1,118 x 10 to the negative second power.
(Refer to Figure 65.) Which of the figures is using scientific notation?
1.
(Refer to Figure 70.) Which alternative answer is equal to 5.59?
1.
Who has the authority to approve for return to service a propeller after a 100-hour inspection? 1. A mechanic with a powerplant rating. 2. Any certificated repairman. 3. A non-certificated mechanic working under the supervision of a certificated mechanic with airframe and powerplant ratings.
1.
Select the decimal which is most nearly equal to 77/64.
1.2031.
(Refer to Figure 13.) Determine the total current flow in the circuit.
1.4 ampers.
(Refer to Figure 47.) What is the measurement reading on the vernier caliper scale?
1.436 inches.
Which alternative answer is equal to 16,300?
1.63 x 10 to the fourth power.
Select the fractional equivalent for a 0.0625 inch thick sheet of aluminum.
1/16.
(Refer to Figure 36.) The diameter of the holes in the finished object is
1/2 inch.
One characteristic of a good weld is that no oxide should be formed on the base metal at a distance from the weld of more than
1/2 inch.
Select the fraction which is equal to 0.0250.
1/40.
(Refer to Figure 5.) What is the impedance of an ac-series circuit consisting of an inductor with a reactance of 10 ohms, a capacitor with a reactance of 4 ohms, and a resistor with a resistance of 8 ohms?
10 ohms.
(Refer to Figure 8.) With an ohmmeter connected into the circuit as shown, what will the ohmmeter read?
10 ohms.
(Refer to Figure 56.) Compute the area of the trapezoid.
10 square feet.
What power of 10 is equal to 1,000,000,000?
10 to the sixth power.
A circuit has an applied voltage of 30 volts and a load consisting of a 10-ohm resistor in series with a 20-ohm resistor. What is the voltage drop across the 10-ohm resistor?
10 volts.
Solve the equation. 1/2 (-30 + 34) 5
10.
When approaching the rear of an idling turbojet or turbofan engine, the hazard area extends aft of the engine approximately
100 feet.
A complete detailed inspection and adjustment of the valve mechanism will be made at the first 25 hours after the engine has been placed in service. Subsequent inspections of the valve mechanism will be made each second 50-hour period. From the above statement, at what intervals will valve mechanism inspections be performed?
100 hours.
A certificated mechanic with a powerplant rating may perform the
100-hour inspection required by the Federal Aviation Regulations on a powerplant or any component thereof and approve and return the same to service.
Certificated mechanics with a powerplant rating may perform
100-hour inspections required by the Federal Aviation Regulation on powerplants, propellers, or any components thereof, and may release the same to service.
(Refer to Figure 60.) Solve the equation.
11.9.
A blueprint shows a hole of 0.17187 to be drilled. Which fraction size drill bit is most nearly equal?
11/64.
(Refer to Figure 69.) Solve the equation.
12.
A rectangular-shaped fuel tank measures 60 inches in length, 30 inches in width, and 12 inches in depth. How many cubic feet are within the tank?
12.5
What is the maximum duration of a temporary airman certificate?
120 days.
(Refer to Figure 40.) Determine the proper tension for a 3/16-inch cable (7 x 19 extra flex) if the temperature is 87°F.
125 pounds.
The following is a table of airspeed limits as given in an FAA-issued aircraft specification: Normal operating speed 260 knots Never-exceed speed 293 knots Maximum landing gear operation speed 174 knots Maximum flap extended speed 139 knots The high end of the white arc on the airspeed instrument would be at
139 knots.
The issuance of an Airworthiness Certificate is governed by
14 CFR Part 21.
Which regulation provides information regarding instrument range markings for an airplane certificated in the normal category?
14 CFR Part 23.
Which regulation provides the airworthiness standards for an airplane certificated in the normal category?
14 CFR Part 23.
Each person performing an annual or 100-hour inspection shall use a checklist that contains at least those items in the appendix of
14 CFR Part 43.
What part of the Federal Aviation Regulations prescribes the requirements for issuing mechanic certificates and associated ratings and the general operating rules for the holders of these certificates and ratings?
14 CFR Part 65
How much current does a 30-volt, 1/2 horsepower motor that is 85 percent efficient draw from the bus? (Note: 1 horsepower = 746 watts)
14.6 ampers.
What is the speed of a spur gear with 42 teeth driven by a pinion gear with 14 teeth turning 420 RPM?
140 RPM.
(Refer to Figure 61.) The amount of force applied to rope A to lift the weight is
15 pounds.
Convert the binary number 1111 to decimal form.
15.
Check thrust bearing nuts for tightness on new or newly overhauled engines at the first 50-hour inspection following installation. Subsequent inspections on thrust bearing nuts will be made at each third 50-hour inspection. From the above statement, at what intervals should you check the thrust bearing nut for tightness?
150 hours.
Which of the following is the square root of (-1776)/(-2) - 632?
16.
(Refer to Figure 14.) The total resistance of the circuit is
17 ohms.
An aircraft has a total time in service of 468 hours. The Airworthiness Directive given was initially complied with at 454 hours in service. How many additional hours in service may be accumulated before the Airworthiness Directive must again be complied with? The following is the compliance portion of an Airworthiness Directive. 'Compliance required as indicated, unless already accomplished. I. Aircraft with less that 500-hours' total time in service: Inspect in accordance with instructions below at 500-hours' total time, or within the next 50-hours' time in service after the effective date of this AD, and repeat after each subsequent 200 hours in service. II. Aircraft with 500-hours' through 1,000-hours' total time in service: Inspect in accordance with instructions below within the next 50-hours' time in service after the effective date of this AD, and repeat after each subsequent 200 hours in service. III. Aircraft with more than 1,000-hours' time in service: Inspect in accordance with instructions below within the next 25-hours' time in service after the effective date of this AD, and repeat after each subsequent 200 hours in service.'
186
What is the speed ratio of an input gear with 36 teeth meshed to a gear with 20 teeth?
1:1.8.
(Refer to Figure 21.) Which symbol represents a variable resistor?
2
(Refer to Figure 26.) Which of the logic gate output conditions is correct with respect to the given inputs?
2
(Refer to Figure 28.) Identify the bottom view of the object shown.
2
(Refer to Figure 44.) Select the illustration which depicts a cold weld.
2
Which statement(s) is/are true regarding tiedown of small aircraft? 1. Manila (hemp) rope has a tendency to stretch when it gets wet. 2. Nylon or dacron rope is preferred to manila rope. 3. The aircraft should be headed downwind in order to eliminate or minimize wing lift. 4. Leave the nosewheel or tailwheel unlocked.
2
Liquid penetrant inspection methods may be used on which of the following? 1. porous plastics. 2. ferrous metals. 3. nonferrous metals. 4. smooth primer-sealed wood. 5. nonporous plastics.
2, 3, 5.
(Refer to Figure 38.) An aircraft reciprocating engine has a 2,800 cubic-inch displacement, develops 2,000 brake-horsepower, and indicates 270 brake mean effective pressure. What is the engine speed (RPM)?
2,100.
(Refer to Figure 4.) How much power is being furnished to the circuit?
2,645 watts.
(Refer to Figure 68.) Which results in the largest number?
2.
An aircraft owner was provided a list of discrepancies on an aircraft that was not approved for return to service after an annual inspection. Which of the following statements is/are true concerning who may correct the discrepancies? 1. Only a mechanic with an inspection authorization. 2. An appropriately rated mechanic. 3. Any certificated repair station.
2.
The speed of sound in the atmosphere is most affected by variations in which of the following? 1. Sound frequency (cps). 2. Ambient temperature. 3. Barometric pressure
2.
What is/are the appropriate action(s) concerning minor repairs performed on a certificated aircraft? 1. FAA Form 337's must be completed. 2. Entries must be made in the aircraft's maintenance record. 3. The owner of the aircraft must submit a record of all minor repairs to the FAA at least annually.
2.
(Refer to Figure 37.) The vertical distance between the top of the plate and the bottom of the lowest 15/64-inch hole is
2.367.
What size sheet of metal is required to fabricate a cylinder 20 inches long and 8 inches in diameter? (Note: C = pi x D)
20 inches x 25-9/64 inches.
An airplane flying a distance of 750 miles used 60 gallons of gasoline. How many gallons will it need to travel 2,500 miles?
200
A four-cylinder aircraft engine has a cylinder bore of 3.78 inches and is 8.5 inches deep. With the piston on bottom center, the top of the piston measures 4.0 inches from the bottom of the cylinder. What is the approximate piston displacement of this engine?
200 cubic inches.
(Refer to Figure 12.) Find the total resistance of the circuit.
21.2 ohms.
(Refer to Figure 38.) An aircraft reciprocating engine has a 1,830 cubic-inch displacement and develops 1,250 brake-horsepower at 2,500 RPM. What is the brake mean effective pressure?
217
Solve the equation. (-3 + 2)(-12 - 4) + (-4 + 6) x 3
22
(Refer to Figure 11.) Find the voltage across the 8-ohm resistor.
24 Volts.
(Refer to Figure 64.) A 24-volt source is required to furnish 48 watts to a parallel circuit consisting of two resistors of equal value. What is the value of each resistor? (Note: R(t) = E^2/P)
24 ohms.
A 24-volt source is required to furnish 48 watts to a parallel circuit consisting of four resistors of equal value. What is the voltage drop across each resistor?
24 volts
If each cell, connected in series, equals 2 volts, how would a 12-cell lead acid battery be rated?
24 volts.
In a parallel circuit with four 6-ohm resistors across a 24-volt battery, what is the total voltage across resistor-three (VR3) in the circuit?
24 volts.
When approaching the front of an idling jet engine, the hazard area extends forward of the engine approximately
25 feet.
On a fillet weld, the penetration requirement includes what percentage(s) of the base metal thickness?
25 to 50 percent.
How many amperes will a 28-volt generator be required to supply to a circuit containing five lamps in parallel, three of which have a resistance of 6 ohms each and two of which have a resistance of 5 ohms each?
25.23 ampers.
(Refer to Figure 41.) Determine how much fuel would be required for a 30-minute reserve operating at 2,300 RPM.
25.3 pounds.
What is the square root of 16 raised to the fourth power?
256.
(Refer to Figure 38.) An aircraft reciprocating engine has a 2,800 cubic-inch displacement and develops 2,000 brake-horsepower at 2,200 RPM. What is the brake mean effective pressure?
257.5.
A six-cylinder engine with a bore of 3.5 inches, a cylinder height of 7 inches and a stroke of 4.5 inches will have a total piston displacement of
259.77 cubic inches.
(Refer to Figure 39.) Determine the maximum length of a No. 12 single cable that can be used between a 28-volt bus and a component utilizing 20 amperes continuous load in free air with a maximum acceptable 1-volt drop.
26.5 feet.
Find the cube of 64.
262,144.
(Refer to Figure 17.) Which of the components is a potentiometer?
3
(Refer to Figure 27.) In the isometric view of a typical aileron balance weight, identify the view indicated by the arrow.
3
(Refer to Figure 29.) Identify the left side view of the object shown.
3
(Refer to Figure 33.) Which material section-line symbol indicates cast iron?
3
(Refer to Figure 35.) Identify the extension line.
3
(Refer to Figure 42.) Which of the bolthead code markings shown identifies an AN corrosion resistant steel bolt?
3
(Refer to Figure 43.) Identify the clevis bolt illustrated.
3
(Refer to Figure 44.) Identify the weld caused by an excessive amount of acetylene.
3
(Refer to Figure 50.) Identify the signal to engage rotor on a rotorcraft.
3
Which of the following materials may be inspected using the magnetic particle inspection method? 1. Magnesium alloys. 2. Aluminum alloys. 3. Iron alloys. 4. Copper alloys. 5. Zinc alloys.
3
(Refer to Figure 6.) If resistor R(5) is disconnected at the junction of R(4) and R(3) as shown, what will the ohmmeter read?
3 ohms.
(Refer to Figure 31.) What are the proper procedural steps for sketching repairs and alterations?
3, 1, 4, 2.
If an engine is turning 1,965 rpm at 65 percent power, what is its maximum rpm?
3,023.
(Refer to Figure 51.) Which marshalling signal should be given if a taxiing aircraft is in imminent danger of striking an object?
3.
(Refer to Figure 62, 62A, & 62B as necessary.) How many parts will need to be fabricated by the mechanic in the construction and installation of one doubler?
3.
Which of the following are commonly used as rectifiers in electrical circuits? 1. Anodes. 2. Cathodes. 3. Diodes
3.
Which of the following occurs when a mechanical force is repeatedly applied to most metals at room temperature, such as rolling, hammering, or bending? 1. The metals become artifically aged. 2. The metals become stress corrosion cracked. 3. The metals become cold worked, strain or work hardened.
3.
Which of the following terms is/are used to indicate specific measured distances from the datum and/or other points identified by the manufacturer, to points in or on the aircraft? 1. Zone numbers. 2. Reference numbers. 3. Station numbers.
3.
(Refer to Figure 11.) Find the total current flowing in the wire between points C and D.
3.0 ampers.
(Refer to Figure 10.) What is the measured voltage of the series-parallel circuit between terminals A and B?
3.0 volts.
How long does the holder of a certificate issued under 14 CFR part 65 have to notify the FAA after any change in permanent mailing address?
30 days.
What aluminum alloy designations indicate that the metal has received no hardening or tempering treatment?
3003-F.
What is the surface area of a cube where a side (edge) measures 7.25 inches?
315.375 sq. in.
Solve the equation. (64 x 3/8) ÷ 3/4 =
32
What is the square root of 4 raised to the fifth power?
32
The result of 7 raised to the third power plus the square root of 39 is equal to
349.24.
Which will weigh the least?
35 parts of dry air and 65 parts of water vapor.
(Refer to Figure 64.) A 48-volt source is required to furnish 192 watts to a parallel circuit consisting of three resistors of equal value. What is the value of each resistor?
36 ohms.
(Refer to the Figure 66.) Solve the equation.
36,002.
How much work input is required to lower (not drop) a 120-pound weight from the top of a 3-foot table to the floor?
360 foot-pounds.
(Refer to Figure 71.) What is the volume of a sphere with a radius of 4.5 inches?
381.7 cubic inches.
1.21875 is equal to
39/32.
A rectangular-shaped fuel tank measures 37-1/2 inches in length, 14 inches in width, and 8-1/4 inches in depth. How many cubic inches are within the tank?
4,331.25.
What force must be applied to roll a 120-pound barrel up an inclined plane 9 feet long to a height of 3 feet (disregard friction)? L ÷ I = R ÷ E L = Length of ramp, measured along the slope. I = Height of ramp. R = Weight of object to be raised or lowered. E = Force required to raise or lower object.
40 pounds.
Find the square root of 1,746.
41.7852
A pinion gear with 14 teeth is driving a spur gear with 42 teeth at 140 RPM. Determine the speed of the pinion gear.
420 RPM.
How much power must a 24-volt generator furnish to a system which contains the following loads? UNIT RATING One motor (75 percent efficient) 1/5 hp Three position lights 20 watts each One heating element 5 amp One anticollision light 3 amp (Note: 1 horsepower = 746 watts)
450 watts.
Which type crack can be detected by magnetic particle inspection using either circular or longitudinal magnetization?
45°.
(Refer to Figure 52.) Solve the equation.
5
(Refer to Figure 16.) Energize the circuit with the fuel tank selector switch selected to the left-hand position. Using the schematic, identify the switches that will change position.
5, 6, 11, 12, 13, 15, 16.
(Refer to Figure 34.) Using the information, what size drill would be required to drill the clevis bolthole?
5/16 inch.
(Refer to Figure 54.) Compute the area of the trapezoid.
52.5 square feet.
(Refer to Figure 41.) Determine the fuel consumption with the engine operating at cruise, 2,350 RPM.
55.3 pounds per hour.
What is the ratio of a gasoline fuel load of 200 gallons to one of 1,680 pounds?
5:7
In a parallel circuit with three 6-ohms resistors across a 12-volt battery, what is the total current (It) value in the circuit?
6 amps.
(Refer to Figure 55.) Find the area of the triangle shown.
6 square inches.
If a double-acting actuating cylinder in a 3,000 psi system has a piston with a surface area of three square inches on the extension side, and a rod with a cross-section area of one square inch attached to the piston on the other side, approximately how much force will the actuator be able to produce when retracting?
6,000 pounds.
Find the square root of 3,722.1835.
61.0097.
Express 5/8 as a percent.
62.5 percent.
(Refer to Figure 57.) Determine the area of the triangle formed by points A, B, and C. A to B = 7.5 inches A to D = 16.8 inches
63 square inches.
If the volume of a cylinder with the piston at bottom center is 84 cubic inches and the piston displacement is 70 cubic inches, then the compression ratio is
6:1.
What is the piston displacement of a master cylinder with a 1.5-inch diameter bore and a piston stroke of 4 inches?
7.0686 cubic inches.
(Refer to Figure 40.) Determine the proper tension for a 1/8-inch cable (7 x 19) if the temperature is 80°F.
70 pounds.
Solve the equation. (32 x 3/8) ÷ 1/6 =
72
An engine of 98 horsepower maximum is running at 75 percent power. What is the horsepower being developed?
73.50.
How many gallons of fuel will be contained in a rectangular-shaped tank which measures 2 feet in width, 3 feet in length, and 1 foot 8 inches in depth? (7.5 gal = 1 cu ft)
75
Maximum life for a certain part is 1100 hours. Recently, 15 of these parts were removed from different aircraft with an average life of 835.3 hours. What percent of the maximum part life has been achieved?
75.9 percent.
(Refer to Figure 39.) Determine the maximum length of a No. 16 cable to be installed from a bus to the equipment in a 28-volt system with a 25-ampere intermittent load and a 1-volt drop.
8 feet.
If the fluid pressure is 800 PSI in a 1/2-inch line supplying an actuating cylinder with a piston area of 10 square inches, the force exerted on the piston will be
8,000 pounds.
Select the container size that will be equal in volume to 60 gallons of fuel. (7.5 gal = 1 cu ft)
8.0 cubic feet.
A rectangular shaped fuel tank measures 27-1/2 inches in length, 3/4 foot in width, and 8-1/4 inches in depth. How many gallons will the tank contain? (231 cu in = 1 gal)
8.83
Sixty-five engines are what percent of 80 engines?
81 percent.
An engine develops 108 horsepower at 87 percent power. What horsepower would be developed at 65 percent power?
81.
Solve the equation. 4 - 3[-6(2 + 3) + 4] =
82
An engine that weighs 350 pounds is removed from an aircraft by means of a mobile hoist. The engine is raised 3 feet above its attachment mount, and the entire assembly is then moved forward 12 feet. A constant force of 70 pounds is required to move the loaded hoist. What is the total work input required to move the hoist?
840 foot-pounds.
Express 7/8 as a percent.
87.5 percent
The aluminum code number 1100 identifies what type of aluminum?
99 percent commercially pure aluminum.
A 1-horsepower, 24-volt dc electric motor that is 80 percent efficient requires 932.5 watts. How much power will a 1-horsepower, 12-volt dc electric motor that is 75 percent efficient require? (Note: 1 horsepower = 746 watts)
994.6 watts.
Which requires the most electrical power? (Note: 1 horsepower = 746 watts)
A 1/5 horsepower, 24-volt motor which is 75 percent efficient.
In what type of electrical diagram are images of components used instead of conventional electrical symbols?
A pictorial diagram.
What type of diagram shows the wire size required for a particular installation?
A writing diagram.
The material specifications for a certain aircraft require that a replacement oil line be fabricated from 3/4-inch 0.072 5052-0 aluminum alloy tubing. What is the inside dimension of this tubing?
A) 0.606 inch
Which of the following statements is/are correct in reference to flare fittings? 1. AN fittings have an identifying shoulder between the end of the threads and the flare cone. 2. AC and AN fittings are considered identical except for material composition and identifying colors. 3. AN fittings are generally interchangeable with AC fittings of compatible material composition.
A) 1
Which statement(s) about Military Standard (MS) flareless fittings is/are correct? 1. During installation, MS flareless fittings are normally tightened by turning the nut a specified amount, rather than being torqued. 2. New MS flareless tubing/fittings should be assembled clean and dry without lubrication. 3. During installation, MS flareless fittings are normally tightened by applying a specified torque to the nut
A) 1
Which of the following hose materials are compatible with phosphate-ester base hydraulic fluids? 1. Butyl. 2. Teflon. 3. Buna-N. 4. Neoprene.
A) 1 and 2
Which of the following are acceptable to use when utilizing chemical cleaning agents on aircraft? 1. Synthetic fiber wiping cloths when using a flammable agent. 2. Cotton fiber wiping cloths when using a flammable agent. 3. Atomizing spray equipment.
A) 2 and 3
When flaring aluminum tubing for use with AN fittings, the flare angle must be
A) 37°
Select the solvent used to clean acrylics and rubber.
A) Aliphatic naphtha
Select the solvent recommended for wipedown of cleaned surfaces just before painting.
A) Aliphatic naptha
Which of the following statements is true regarding minimum allowable bend radii for 1.5 inches OD or less aluminum alloy and steel tubing of the same size?
A) The minimum radius for steel is greater than for aluminum
Flexible lines must be installed with
A) a slack of 5 to 8 percent of the length.
The rust or corrosion that occurs with most metals is the result of
A) a tendency for them to return to their natural state
A scratch or nick in aluminum tubing can be repaired provided it does not
A) appear in the heel of a bend
What is the color of an AN steel flared-tube fitting?
A) black
Nickel-cadmium battery cases and drain surfaces which have been affected by electrolyte should be neutralized with a solution of
A) boric acid
Hydraulic tubing, which is damaged in a localized area to such an extent that repair is necessary, may be repaired
A) by cutting out the damaged area and utilizing a swaged tube fitting to join the tube ends.
The best tool to use when cutting aluminum tubing, or any tubing of moderately soft metal is a
A) hand operated wheel-type tubing cutter.
A primary reason why ordinary or otherwise nonapproved cleaning compounds should not be used when washing aircraft is because their use can result in
A) hydrogen embrittlement in metal structures
A primary cause of intergranular corrosion is
A) improper heat treatment
Metal tubing fluid lines are sized by wall thickness and
A) outside diameter in 1/16 inch increments
Corrosion should be removed from magnesium parts with a
A) stiff, nonmetallic brush
Fretting corrosion is most likely to occur
A) when two surfaces fit tightly together but can move relative to one another.
An aircraft had an empty weight of 2,886 pounds with a moment of 101,673.78 before several alterations were made. The alterations included: 1. removing two passenger seats 15 pounds each at +71; 2. installing a cabinet 97 pounds at +71;
A. 1.62 inches aft of the original empty weight CG.
When an empty aircraft is weighed, the combined net weight at the main gears is 3,540 pounds with an arm of 195.5 inches. At the nose gear, the net weight is 2,322 pounds with an arm of 83.5 inches. The datum line is forward of the nose of the aircraft. What is the empty CG of the aircraft?
A. 151.1.
When determining the empty weight of an aircraft, certificated under current airworthiness standards, the oil contained in the supply tank is considered
A. A part of the empty weight.
The useful load of an aircraft consists of the
A. Crew, usable fuel, passengers, and cargo.
What type of measurement is used to designate the arm in weight and balance computation?
A. Distance.
An aircraft's LEMAC and TEMAC are defined in terms of distance
A. From the datum.
To obtain useful weight data for purposes of determining the CG, it is necessary that the aircraft be weighed
A. In a level flight attitude.
Most modern aircraft are designed so that if all seats are occupied, full baggage weight is carried, and all fuel tanks are full, what will be the weight condition of the aircraft?
A. It will be in excess of maximum takeoff weight.
in the theory of weight and balance, what is the name of the distance from the fulcrum to an object?
A. Lever arm.
In the process of weighing an airplane toward obtaining the CG, the arms from the weighing point always extend
A. Parallel to the center line of the airplane
Which of the following can provide the empty weight of an aircraft if the aircraft's weight an balance records become lost, destroyed, or otherwise inaccurate?
A. Reweighing the aircraft.
What FAA-approved document gives the leveling means to be used when weighing an aircraft?
A. Type Certificate Data Sheet.
In a balance computation of an aircraft from which an item located aft of the datum was removed, use
A. negative weight times positive arm negative moment.
1. Private aircraft are required by regulations to be weighed periodically. 2. private aircraft are required to be weighed after making any alteration. regarding these statements.
A. neither number 1 nor number 2 is true
Improper loading of a helicopter which results in exceeding either the fore or aft CG limits is hazardous due to the
A. reduction or loss of effective cyclic pitch control.
When computing weight and balance, an airplane is considered to be in balance when.
A. the average moment arm of the loaded airplane falls within its CG range.
The useful load of an aircraft is the difference between
A. the maximum takeoff weight and basic empty weight.
When the specific torque value for nuts is not given, where can the recommended torque value be found?
AC 43.13-1B.
Which of these publications contains standards for protrusion of bolts, studs, and screws through self-locking nuts?
AC 43.13-1B.
An aircraft mechanic is privileged to perform major alterations on U.S. certificated aircraft; however, the work must be done in accordance with FAA-approved technical data before the aircraft can be returned to service. Which is NOT approved data?
AC 43.13-2A.
A bolt with a single raised dash on the head is classified as an
AN corrosion-resistant steel bolt.
Which condition is the actual amount of water vapor in a mixture of air and water?
Absolute humidity.
What factors strengthen a coil inductor?
Adding coils close together.
For aircraft operated under part 91, when is aircraft total time required to be recorded in aircraft maintenance records?
After satisfactorily completing inspection.
Suitability for use of a specific propeller with a particular engine-airplane combination can be determined by reference to what informational source?
Aircraft Specifications or Aircraft Type Certificate Data Sheet.
Placards required on an aircraft are specified in
Aircraft Specifications or Type Certificate Data Sheets.
Specifications pertaining to an aircraft model manufactured under a type certificate, of which less than 50 are shown on the FAA Aircraft Registry, can be found in the
Aircraft listing.
Technical information about older aircraft models, of which no more than 50 remain in service, can be found in the
Aircraft listing.
Where is the record of compliance with Airworthiness Directives or manufacturers' service bulletins normally indicated?
Aircraft maintenance records.
If more space is needed for a work description entered on FAA Form 337, what information should be included on the attached sheet(s), in addition to the rest of the work description?
Aircraft nationality and registration mark, and the date the work was accomplished.
For aircraft operated under part 91, what difference is there, if any, between the record entry requirements for maintenance (e.g., repair or alteration) and the record entry requirements for inspections (beyond the description of the work performed and the type and extent of inspection)?
Aircraft total time is required to be included in the inspection entry.
Type Certificate Data Sheets are issued for which of the following products?
Aircraft, engines, and propellers.
What is the means by which the FAA notifies aircraft owners and other interested persons of unsafe conditions and prescribes the condition under which the product may continue to be operated?
Airworthiness Directives.
Which statement is true regarding the requirements for maintenance record format?
Any format that provides record continuity and includes the required information may be used.
(Refer to Figure 24.) Which statement concerning the depicted logic gate is true?
Any input being 1 will produce a 1 output.
If electrolyte from a lead-acid battery is spilled in the battery compartment, which procedure should be followed?
Apply sodium bicarbonate solution to the affected area followed by a rinse of water.
What must accompany fuel vaporization?
As absorption of heat.
A 14-ohm resistor is to be installed in a series circuit carrying .05 ampere. How much power will the resistor be required to dissipate?
At least 35 milliwatts.
From the following sequences of steps, indicate the proper order you would use to make a single flare on a piece of tubing: 1. Place the tube in the proper size hole in the flaring block. 2. Project the end of the tube slightly from the top of the flaring tool, about the thickness of a dime. 3. Slip the fitting nut and sleeve on the tube. 4. Strike the plunger several light blows with a lightweight hammer or mallet and turn the plunger one-half turn after each blow. 5. Tighten the clamp bar securely to prevent slippage. 6. Center the plunger or flaring pin over the tube.
B) 3, 1, 6, 2, 5, 4
A nonelectrolytic chemical treatment for aluminum alloys to increase corrosion resistance and paint-bonding qualities is called
B) Alodizing
Of the following, when and/or where is galvanic corrosion is most likely to occur?
B) At the interface of a steel fastener and aluminum alloy inspection plate in the presence of an electrolyte
Which tubings have the characteristics (high strength, abrasion resistance) necessary for use in a high-pressure (3,000 PSI) hydraulic system for operation of landing gear and flaps?
B) Corrosion resistant steel annealed or 1/4H
What may be used to remove corrosion from highly stressed steel surfaces?
B) Fine-grit aluminum oxide.
Which statement is true regarding flattening of tubing in bends?
B) Flattening by not more than 25 percent of the original diameter is permissible
Which of the following is an acceptable first step procedure to help prevent scratching when cleaning a transparent plastic surface?
B) Flush the surface with clean water.
Which of the following may not be detectable even by careful visual inspection of the surface of aluminum alloy parts or structures?
B) Intergranular corrosion
What is an advantage of a double flare on aluminum tubing?
B) More resistance to damage when the joint is tightened.
(1) In the corrosion process, it is the cathodic area or dissimilar cathodic material that corrodes. (2) In the Galvanic or Electro-Chemical Series for metals, the most anodic metals are those that will give up electrons most easily. Regarding the above statements,
B) Only No. 2 is true
Which statement is true regarding the variety of symbols utilized on the identifying color-code bands that are currently used on aircraft plumbing lines?
B) Symbols are always black against a white background regardless of line content.
Which statement concerning Bernoulli's principle is true?
B) The pressure of a fluid decreases at points where the velocity of the fluid increases.
Why is it important not to rotate the crankshaft after the corrosion preventive mixture has been put into the cylinders on engines prepared for storage?
B) The seal of corrosion preventive mixture will be broken.
For which of the following reasons would a water break test be conducted?
B) To make certain that a bare metal surface is thoroughly clean.
What should be done to prevent rapid deterioration when oil or grease come in contact with a tire?
B) Wipe the tire with a dry cloth followed by a washdown and rinse with soap and water.
(1) Bonded clamps are used for support when installing metal tubing. (2) Unbonded clamps are used for support when installing wiring. Regarding the above statements,
B) both No. 1 and No. 2 are true.
When an anodized surface coating is damaged in service, it can be partially restored by
B) chemical surface treatment
Corrosion caused by galvanic action is the result of
B) contact between two unlike metals
One way of obtaining increased resistance to stress corrosion cracking is by
B) creating compressive stresses (via shot peening) on the metal surface
Fayed surfaces cause concern in chemical cleaning because of the danger of
B) entrapping corrosive materials
A 3/8 inch aircraft high pressure flexible hose as compared to 3/8 inch metal tubing used in the same system will
B) have equivalent flow characteristics
The term 'cold flow' is generally associated with
B) impressions left in natural or synthetic rubber hose material
In a metal tubing installation,
B) tension is undesirable because pressurization will cause it to expand and shift
In most aircraft hydraulic systems, two-piece tube connectors consisting of a sleeve and a nut are used when a tubing flare is required. The use of this type connector eliminates
B) the possibility of reducing the flare thickness by wiping or ironing during the tightening process.
A gas or fluid line marked with the letters PHDAN is
B) used to carry a hazardous substance
An aircraft with an empty weight of 1,800 pounds and an empty weight CG of +31.5 was altered as follows: 1. two 15-pound passenger seats located at +72 were removed; 2. structural modifications increasing the weight 14 pounds were made at +76;
B. +31.61.
If a 40-pound generator applies +1400 inch-pounds to a reference axis, the generator is located
B. +35 from the axis.
Two boxes which weigh 10 pounds and 5 pounds are placed in an airplane so that their distance aft from the CG are 4 feet and 2 feet respectively. How far forward of the CG should a third box, weighing 20 pounds, be placed so that the CG will not be changed?
B. 2.5 feet.
Datum is forward of the main gear center point 30.24 inches Actual distance between tail gear and main gear center points 360.26 inches Net weight at right main gear 9,980 pounds Net weight at left main gear 9,770 pounds Net weight at tail gear 1,970 pounds These items were in the aircraft when weighed: 1. Lavatory water tank full (34 pounds at +352). 2. Hydraulic fluid (22 pounds at -8). 3. Removable ballast (146 pounds at +380). What is the empty weight CG of the aircraft described above?
B. 60.31 inches.
If the reference datum line is placed at the nose of an airplane rather than at the firewall or some other location on the nose,
B. All measurement arms will be in positive numbers.
When, or under what conditions are adverse loading checks conducted?
B. Anytime a repair or alteration causes EWCG to fall outside the CG range.
When computing the maximum forward loaded CG of an aircraft, minimum weights, arms, and moments should be used for items of useful load that are located aft of the
B. Forward CG limit.
The maximum weight as used in weight and balance control of a given aircraft can normally be found
B. In the aircraft specification or Type Certificate Data Sheet.
When an aircraft is positioned for weighing on scales located under each landing gear wheel, which of the following may cause erroneous scale readings?
B. Parking break set.
An aircraft with an empty weight of 2100 pounds and an empty weight CG of positive 32.5 was altered as follows. 1. two 18-pound passenger seats located at positive 73 were removed. 2. Structural modifications were made at positive 77 increasing the weight by 17 pounds. 3. A seat and safety belt weighing 15 pounds were installed at positive 74.5 4. Radio equipment weighing 35 pounds was installed at positive 95 What is the empty weight CG?
B. Positive 33.68
Use of which of the following generally yields the highest degree of aircraft leveling accuracy?
B. Spirit levels.
The empty weight of an airplane is determined by
B. Subtracting the tare weight from the scale reading and adding the weight of each weighing point.
What determines weather the value of a moment is preceded by a plus or a minus sign in aircraft weight and balance?
B. The result of a weight being added re removed and its location relative to the datum.
The amount of fuel used for computing empty weight and corresponding CG is
B. Unusable fuel.
If an aircraft CG is found to be at 24 percent of MAC, that 24 percent is an expression of the
B. distance from the LEMAC.
All other things being equal, if an item of useful load located aft of an aircraft's CG is removed, the aircraft's CG change will be
B. forward in proportion to the weight of the item and its location on the aircraft.
Where do you look to determine the operating CG range when calculating a new aircraft weight and balance document?
B. it is found on the Type Certificate Data Sheet.
If the empty weight CG of an airplane lies within the empty weight CG limits,
B. it is not necessary to calculate CG extremes.
The major source of weight change for most aircraft as they age is caused by
B. repairs and alterations.
What is meant by the term residual fuel?
B. the fuel remaining in the tanks, lines, and engine after draining.
What should be the first step of the procedure in sketching an aircraft wing skin repair?
Block in the view.
(Refer to Figure 45.) What type weld is shown at A?
Butt.
How is a quality system assured?
By an internal reporting and auditing system.
How are aviation fuels, which possess greater antiknock qualities than 100 octane, classified?
By performance numbers.
How can the state-of-charge of a nickel-cadmium battery be determined?
By the level of the electrolyte.
How is the locking feature of the fiber-type locknut obtained?
By the use of an unthreaded fiber locking insert.
What is defined as a group of bits representing a complete piece of information?
Byte.
Which of the following are the desired effects of using Alodine on aluminum alloy? 1. A slightly rough surface. 2. Relieved surface stresses. 3. A smooth painting surface. 4. Increased corrosion resistance.
C) 1 and 4
Scratches or nicks on the straight portion of aluminum alloy tubing may be repaired if they are no deeper than
C) 10 percent of the wall thickness
Which of the following are acceptable to use in cleaning anodized surfaces? 1. Steel wool. 2. Brass wire brush. 3. Aluminum wool. 4. Stainless steel wire brush. 5. Fiber bristle brush.
C) 3 and 5
The maximum distance between end fittings to which a straight hose assembly is to be connected is 50 inches. The minimum hose length to make such a connection should be
C) 52-1/2 inches
The interior surface of sealed structural steel tubing would be best protected against corrosion by which of the following?
C) A coating of linseed oil.
Which coupling nut should be selected for use with 1/2-inch aluminum oil lines which are to be assembled using flared tube ends and standard AN nuts, sleeves, and fittings?
C) AN-818-8
If a flared tube coupling nut is overtightened, where is the tube most likely to be weakened/damaged?
C) At the sleeve and flare junction
When installing a castle nut, and the nut castellation does not align with the cotter pin hole in the bolt within the torque range, the acceptable practice is to
C) Change the nit or washer and try again
Which of these materials is the most anodic?
C) Magnesium
When a Teflon hose has been in service for a time, what condition may have occurred and/or what precaution should be taken when it is temporarily removed from the aircraft?
C) The hose may have developed a set, or have been manufactured with a pre-set shape, and must be supported to maintain its shape.
Which of the listed conditions is NOT one of the requirements for corrosion to occur?
C) The presence of a passive oxide film
How may magnesium engine parts be cleaned?
C) Wash with a commercial solvent, decarbonize, and scrape or grit blast.
Intergranular corrosion in aluminum alloy parts
C) cannot always be detected by surface indications
Spilled mercury on aluminum
C) causes rapid and severe corrosion that is very difficult to control
A certain amount of slack must be left in a flexible hose during installation because, when under pressure, it
C) contracts in length and expands in diameter.
Caustic cleaning products used on aluminum structures have the effect of producing
C) corrosion
The lifting or flaking of the metal at the surface due to delamination of grain boundaries caused by the pressure of corrosion residual product buildup is called
C) exfoliation
Flexible hose used in aircraft systems is classified in size according to the
C) inside diameter
The primary purpose of providing suitable bends in fluid and pneumatic metal tubing runs is to
C) prevent excessive stress on the tubing
Excessive stress on fluid or pneumatic metal tubing caused by expansion and contraction due to temperature changes can best be avoided by
C) providing bends in the tubing
When installing bonded clamps to support metal tubing,
C) remove paint or anodizing from tube at clamp location
Rolling-type Flaring Tools are used to flare X, X, and X tubing.
C) soft copper, aluminum, brass
Which of these materials is the most cathodic?
C) stainless steel
Galvanic corrosion is likely to be most rapid and severe when
C) the surface area of the anodic metal is smaller than the surface area of the cathodic metal.
An aircraft with an empty weight of 1,500 pounds and an empty weight CG of +28.4 was altered as follows: 1. two 12-pound seats located at +68.5 were removed; 2. structural modifications weighing +28 pounds were made at +73; 3. a seat and safety belt weighing 30 pounds were installed at +70.5; and 4. radio equipment weighing 25 pounds was installed at +85. What is the new empty weight CG?
C. +30.30.
Find the empty weight CG location for the following tricycle-gear aircraft. Each main wheel weighs 753 pounds, nosewheel weighs 22 pounds, distance between nosewheel and main wheels is 87.5 inches, nosewheel location is +9.875 inches from datum, with 1 gallon of hydraulic fluid at -21.0 inches included in the weight scale.
C. +96.11 inches.
The following alteration was performed on an aircraft: A model B engine weighing 175 pounds was replaced by a model D engine weighing 185 pounds at a -62.00-inch station. The aircraft weight and balance records show the previous empty weight to be 998 pounds and an empty weight CG of 13.48 inches. What is the new empty weight CG?
C. 12.73 inches.
As weighed, the total empty weight of an aircraft is 5,862 pounds with a moment of 885,957. However, when the aircraft was weighed, 20 pounds of potable water were on board at +84, and 23 pounds of hydraulic fluid were in a tank located at +101. What is the empty weight CG of the aircraft?
C. 151.365.
An aircraft as loaded weighs 4954 pounds at a CG of positive 30.5. The CG range is positive 32.0 inches to positive 42.1 inches. Find the minimum weight of the ballast necessary to bring the CG withing range. The ballast arm is positive 162 inches.
C. 57.16 Pounds.
When dealing with weight and balance of an aircraft, the term maximum weight is interpreted to mean the maximum
C. Authorized weight of the aircraft and its contents.
When accomplishing loading computations for a small aircraft, necessary information obtained from the weight and balance records would include
C. Current empty weight and empty weight CG.
The maximum weight of an aircraft is the
C. Empty weight plus Useful load.
If it is necessary to weigh an aircraft with full fuel tanks, all fuel weight must be subtracted from the scale readings.
C. Except unusable fuel.
Which would have an effect on aircraft CG results when concluding a weight and balance check:
C. Leaving down-locks installed.
The CG range in single rotor helicopters is
C. More restricted than for airplanes.
What tasks are completed prior to weighting an aircraft to determine its empty weight?
C. Remove all items except those on the aircraft equipment list; drain fuel and fill hydraulic reservoir.
Which statement is true regarding helicopter weight and balance?
C. Weight and balance procedures for airplanes generally also apply to helicopters.
What should be clearly indicate din the aircraft weighing form?
C. Weight points.
Maximum zero fuel weight is the
C. maximum permissible weight of a loaded aircraft, passengers, crew, and cargo, without fuel.
When making a rearward weight and balance check to determine that the CG will not exceed the rearward limit during extreme conditions, the items of useful load which should be computed at their minimum weights are those located forward of the
C. rearward CG limit
Which of the following is the most satisfactory extinguishing agent for use on a carburetor or intake fire?
Carbon dioxide.
Which heat-treating operation would be performed when the surface of the metal is changed chemically by introducing a high carbide or nitride content?
Case hardening.
Which heat-treating process of metal produces a hard, wear-resistant surface over a strong, tough core?
Case hardening.
What material symbol is frequently used in drawings to represent all metals?
Cast Iron.
What type of drawing line consists of alternating long and short lines?
Center.
A certificated mechanic without an inspection authorization who signs the appropriate block on FAA Form 337 is doing what?
Certifying that the work was done in accordance with the requirements of 14 CFR part 43.
Which material cannot be heat treated repeatedly without harmful effects?
Clad aluminum alloy.
The following words are an example of what kind of statement in an AD? 'Required within the next 25 hours time-in-service after the effective date of this AD, unless already accomplished.
Compliance.
What method of magnetic particle inspection is used most often to inspect aircraft parts for invisible cracks and other defects?
Continuous.
What information is generally contained in Aircraft Specifications or Type Certificate Data Sheets?
Control surface movements.
What does the letter Q symbolize when measuring electrical charge?
Coulomb.
What is the basic unit of electrical quantity?
Coulomb.
Which condition indicates a part has cooled too quickly after being welded?
Cracking adjacent to the weld.
How is a flooded engine, equipped with a float-type carburetor, cleared of excessive fuel?
Crank the engine wit ht he stater or by hand, the the mixture control in cutoff, ignition switch off, and the throttle fully open, unit the fuel charge has been cleaned.
What is the status of data used as a basis for approving major repairs or alterations for return to service?
Data must be FAA-approved prior to its use for that purpose.
Which of these will cause the resistance of a conductor to decrease?
Decreases the length or increase the cross-sectional area.
Circular magnetization of a part can be used to detect which defects?
Defects parallel to the long axis of the part.
What defects will be detected by magnetizing a part using continuous longitudinal magnetization with a cable?
Defects perpendicular to the long axis of the part.
What regulations are covered by 14 CFR Part 1?
Definitions and abbreviations.
Which maintenance record entry best describes the action taken for a .125-inch deep dent in a straight section of 1/2-inch aluminum alloy tubing?
Dented section removed and replaced with identical new tubing flared to 37°.
What is the class of working drawing that is the description/depiction of a single part?
Detail drawing.
Which tool can be used to measure the alignment of a rotor shaft or the plane of rotation of a disk?
Dial indicator.
Electrostatic fields are also known as
Dielectric fields
Identify the correct statement.
Dividers do not provide a reading when used as a measuring device
(Refer to Figure 45.) What type weld is shown at B?
Double butt.
The most important condition to be monitored during start after fuel flow begins in a turbine engine is the
EGT, TIT, or ITT.
What nondestructive testing method requires little or no part preparation, is used to detect surface or near-surface defects in most metals, and may also be used to separate metals or alloys and their heat-treat conditions?
Eddy current inspection.
Which aircraft record entry is the best description of the replacement of several damaged heli-coils in a casting?
Eight 1/4 -- 20 inch standard heli-coils were replaced. The damaged inserts were extracted, the tapped holes gaged, then new inserts installed, and tangs removed.
Which of the following is Newton's First Law of Motion, generally termed the Law of Inertia?
Every body persist in its state of rest, or motion in a straight line, unless acted upon by outside force.
What may result if water is added to a nickel-cadmium battery when it is not fully charged?
Excessive spewing is likely to occur during the charging cycle.
Which statement is true regarding the use of FAA Form 337?
FAA Form 337 is not authorized for use with other than U.S. registard aircraft.
The priming of a fuel injected horizontally opposed engine is accomplished by placing the fuel control lever in the
FULL-RICH position.
What is used to indicate that a surface must be machine finished?
Finished marks.
Which of the following is an instance when a special flight permit may not be issued?
Flying passengers on a scheduled operation.
What tool is generally used to calibrate a micrometer or check its accuracy?
Gauge block.
Which of the following statements is true for a certificated and appropriately rated mechanic regarding repairs and alterations?
He/she may perform and airframe major repair and major alteration, but cannot approve the work for return of service.
Which condition is an indication of improperly torqued cell link connections of a nickel-cadmium battery?
Heat or burn marks on the hardware.
Which atmospheric conditions will cause the true landing speed of an aircraft to be the greatest?
High temperature with high humidity.
Which of the following conditions has the most potential for causing engine damage when starting or attempting to start a turbine engine?
Hot start.
John and Nancy have been tasked with completing a hydraulic pump inspection. John is 5 feet 9 inches tall. Nancy is 5 feet 6 inches tall. What could result if Nancy is not tall enough to accomplish the task?
Human error.
Which is correct in reference to electrical resistance?
If one of the three bulbs in a parallel lighting circuit is removed, the total resistance of the of the circuit will become greater.
Which statement below reflects a typical requirement when towing some aircraft?
If the aircraft has a steerable nosewheel, the torque-link lock should be set to full swivel.
When a 100-hour inspection is completed, if separate maintenance records for the airframe, powerplant(s), and propeller(s) are maintained, where is the entry for the inspection recorded?
In each record.
Which statement regarding aircraft bolts is correct?
In general, bolt grip lengths should equal the material thickness.
Why should an aircraft maintenance technician be familiar with weld nomenclature?
In order to gain familiarity with the welding technique, filler material, and temperature range used.
An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?
Inductive and frequency.
What is the opposition to the flow of AC produced by a magnetic field with generated back voltage (EMF) called?
Inductive reactance.
What is the maximum penalty for cheating or other unauthorized conduct when taking an FAA mechanic test?
Ineligibility to receive any certificate or rating for one year, and suspension or revocation of any certificate held.
(Refer to Figure 7.) If resistor R(3) is disconnected at terminal D, what will the ohmmeter read?
Infinite resistance.
What type of corrosion may attack the grain boundaries of aluminum alloys when the heat treatment process has been improperly accomplished?
Intergranular.
Through which material will magnetic lines of force pass the most readily?
Iron.
Which statement relating to the residual magnetizing inspection method is true?
It may be used with steels which have been heat treated for stressed applications.
(Refer to Figure 45.) What type weld is shown at G?
Lap.
(Refer to Figure 19.) Under which condition will a ground be provided for the warning horn through both gear switches when the throttles are closed?
Left gear up and right gear down.
Which of the following best describes the contributing factors to thermal runaway in a nickel-cadmium battery installed in an aircraft?
Low internal resistance intensified by high cell temperatures and a high current discharge/charge rate in a constant potential (voltage) charging system.
What tool is generally used to set a divider to an exact dimension?
Machinist scale.
The positive aspects of human factor issues are referred to as the
Magnificent Seven.
What is the maintenance recording responsibility of the person who complies with an Airworthiness Directive?
Make an entry in the maintenance record of that equipment.
After a mechanic holding an airframe and powerplant rating completes a 100-hour inspection, what action is required before the aircraft is returned to service?
Make the proper entries in the aircraft'd maintenance record.
What type of line is normally used in a mechanical drawing or blueprint to represent an edge or object not visible to the viewer?
Medium-weight dashed line.
A mechanic has completed a bonded honeycomb repair using the potted compound repair technique. What nondestructive testing method is used to determine the soundness of the repair after the repair has cured?
Metallic ring test.
What precision measuring tool is used for measuring crankpin and main bearing journals for out-of-round wear?
Micrometer caliper.
Which tool can be used to determine piston pin out-of-round wear?
Micrometer caliper.
What may be used to check the stem on a poppet-type valve for stretch?
Micrometer.
Which term means .001 ampere?
Milliampere
(Refer to Figure 15.) With the landing gear retracted, the red indicator light will not come on if an open occurs in wire
N0. 19.
A bolt with an X inside a triangle on the head is classified as an
NAS close tolerance bolt.
(1) Sketches are usually made with the aid of drafting instruments. (2) Sketches are usually more complicated to make when using graph paper. Regarding the above statements,
Neither No. 1 nor No. 2 is true.
(Refer to Figure 39.) Determine the cable size of a 40-foot length of single cable in free air, with a continuous rating, running from a bus to the equipment in a 28-volt system with a 15-ampere load and a 1-volt drop.
No. 10.
(Refer to Figure 39.) Determine the minimum wire size of a single cable in a bundle carrying a continuous current of 20 amperes 10 feet from the bus to the equipment in a 28-volt system with an allowable 1-volt drop.
No. 12.
(Refer to Figure 18.) When the landing gears are up and the throttles are retarded, the warning horn will not sound if an open occurs in wire
No. 4.
(Refer to Figure 19.) When the throttles are retarded with only the right gear down, the warning horn will not sound if an open occurs in wire
No. 5.
(Refer to Figure 19.) When the landing gears are up and the throttles are retarded, the warning horn will not sound if an open occurs in wire
No. 6.
When taxiing (or towing) an aircraft, an alternating red and green light from the control tower means
OK to proceed but use extreme caution.
Which statement is true regarding an orthographic projection?
One-view, two-view, three-view drawings are the most common.
Where is an AN clevis bolt used in an airplane?
Only for shear load applications.
Which is an appliance major repair?
Overhaul of a hydraulic pressure pump
Which of the following includes all the regulatory definitions of 'maintenance'?
Overhaul, reapair, parts replacement, inspection, and preservation.
(Refer to Figure 16.) When electrical power is applied to the bus, which relays are energized?
PCC and TCC
Where are technical descriptions of certificated propellers found?
Propeller Type Certificate Data Sheets.
For aircraft operated under part 91, which of the following records must be retained for at least one year, or until the work is repeated or superseded?
Records of maintenance, alterations, preventive maintenance, 100-hour, annual, and progressive inspection.
For aircraft operated under part 91, which of the following records must be retained and transferred with the aircraft when it is sold?
Records the current status of applicable AD's, and date and time when recurring AD's are next due.
Which is the ratio of the water vapor actually present in the atmosphere to the amount that would be present if the air were saturated at the prevailing temperature and pressure?
Relative humidity.
Holes and a few projecting globules are found in a weld. What action should be taken?
Remove all the old weld, and reweld the joint.
In a sectional view drawing, what sections illustrate particular parts of an object?
Removed.
During starting of a turbine powerplant using a compressed air starter, a hung start occurred. Select the proper procedure.
Shut the engine down.
(Refer to Figure 32.) What is the next step required for a working sketch of the illustration?
Sketch extension and dimension lines.
What is descriptive of the annealing process of steel during and after it has been annealed?
Slow cooling; low strength.
What is ATA iSpec 2200?
Standardization electronic documentation for aircraft models.
Which effect does not apply to the movement of electrons flowing in a conductor?
Static energy.
What numbering system is used to locate fuselage frames?
Station numbers.
Under Title 14 of the Code of Federal Regulations, what is the maximum penalty for falsification, alteration, or fraudulent reproduction of certificates, logbooks, reports, and records?
Suspension or revocation of any certificate held.
What does the acronym TSO mean regarding a type certificated aircraft part, material, component and/or process?
Technical Standard Order.
How can the dimensional inspection of a bearing in a rocker arm be accomplished?
Telescopic gauge and micrometer.
Which statement concerning heat and/or temperature is true?
Temperature is a meassure of the kinetic energy of the molecules of any substance.
A Technical Standard Order (TSO) is issued by whom?
The Administrator
What is absolute humidity?
The actual amount of the water vapor in a mixture of air and water.
Who is responsible for upkeep of the required maintenance records for an aircraft?
The aircraft owner.
What happens to the current in a voltage step-up transformer with a ratio of 1 to 4?
The current is stepped down by 1 40 4 ratio.
Under magnetic particle inspection, a part will be identified as having a fatigue crack under which condition?
The discontinuity is found in a highly stressed area of the part.
The main rotor system on a helicopter is classified in three groups. Which of those listed is NOT one of these groups?
The flexible-beam rotor system.
(Refer to Figure 16.) What will be the effect if the PCO relay fails to operate when the left-hand tank is selected?
The fuel pressure crossfeed valve open light will not illuminate.
If a hot start occurs during starting of a turbine powerplant, what is the likely cause?
The fuel/air mixture was excessively rich.
When referring to an electrical circuit diagram, what point is considered to be at zero voltage?
The ground reference.
Which statement regarding the hydrometer reading of a lead-acid storage battery electrolyte is true?
The hydrometer reading does not require a temperature correction if the electrolyte temperature is 80°F.
Who is responsible for determining that materials used in aircraft maintenance and repair are of the proper type and conform to the appropriate standards?
The installing person or agency.
When reading a blueprint, a dimension is given as 4.387 inches +.005 -.002. Which statement is true?
The minimum acceptable size is 4.385 inches.
An aircraft was not approved for return to service after an annual inspection and the owner wanted to fly the aircraft to another maintenance base. Which statement is correct?
The owner must obtain a special flight permit.
Who is responsible for making the entry in the maintenance records after an annual, 100 hour, or progressive inspection?
The person approving or disapproving for return to service.
When work is performed on an aircraft that necessitates the use of FAA Form 337, who should prepare the form?
The person who performs or supervises the work.
A person installing a product, part, or appliance on a type certificated product must make certain that the item's records document what type of statement?
The product, part, or material meets FAA airworthiness standards.
Which maintenance action is an airframe major repair?
The repair of portions of skin sheets by making additional seams.
Which of the following is a main determinant of the dwell time to use when conducting a dye or fluorescent penetrant inspection?
The size and shape of the discontinuities being looked for.
Which statement is applicable when using a sketch for making a part?
The sketch must show all information to manufacture the part.
Which is classified as a major repair?
The splicing of skin sheets.
What determines the amount of current which will flow through a battery while it is being charged by a constant voltage source?
The state-of-charge of the battery.
Which statement is correct when made in reference to a parallel circuit?
The total current is equal to the same currents through the individual branches of the circuit.
Select a characteristic of a good gas weld.
The weld should taper off smoothly into the base metal.
How long are AD compliance records required to be kept?
They shall be retained, and the transferred with the aircraft when it is sold.
Which tool is used to measure the clearance between a surface plate and a relatively narrow surface being checked for flatness?
Thickness gauge.
(Refer to Figure 16.) With power to the bus and the fuel selector switched to the right-hand tank, how many relays in the system are operating?
Three.
How many of these factors are considered essential knowledge for x-ray exposure? 1. Processing of the film. 2. Material thickness and density. 3. Exposure distance and angle. 4. Film characteristics.
Three.
What metal has special short-time heat properties and is used in the construction of aircraft firewalls?
Titanium alloy.
Why is a mechanic applicant issued a temporary certificate after successful completion of the required tests?
To allow for review his/her application and supplementary documents.
Which of the following best describes the operating principal in a nickel-cadmium battery installed in an aircraft?
To completely charge a nickel-cadmium battery, some gassing must take place; thus, some water will be used.
Why is it considered good practice to normalize a part after welding?
To relieve internal stresses developed within the base metal.
Why is steel tempered after being hardened?
To relieve its internal stresses and reduce its brittleness.
Why is ethylene dibromide added to aviation gasoline?
To scavenge lead oxide from the cylinder combustion chambers.
What is the purpose of the ground symbol used in electrical circuit diagrams?
To show that there is a return path for the current between the source of electrical energy and the load.
Which is correct concerning a parallel circuit?
Total resistance will be smaller than the smallest resistor.
In order to reconstruct lost or destroyed aircraft maintenance records, what is it necessary to establish?
Total time-in-service of the airframe.
Schematic diagrams are best suited for which of the following?
Troubleshooting system malfunctions.
Which requires the most electrical power during operation? (Note: 1 horsepower = 746 watts)
Two lights requiring 3 amperes each in a 24-volt parallel system.
What does the Type Certificate Data Sheet designation code '2 PCSM' mean?
Two place (number of seats), closed, sea, monoplane.
(Refer to Figure 9.) How many instruments (voltmeters and ammeters) are installed correctly?
Two.
After making a certain repair to an aircraft engine that is to be returned to service, an FAA Form 337 is prepared. How many copies are required and what is the disposition of the completed forms?
Two; one copy for the aircraft owner and one copy for the FAA.
Which of these nondestructive testing methods is suitable for the inspection of most metals, plastics, and ceramics for surface and subsurface defects?
Ultrasonic inspection.
How long is a mechanic certificate with airframe and/or powerplant ratings valid?
Until surrendered, suspended, or revoked.
Typical application for zener diodes is as
Voltage regulators
What unit is used to express electrical power?
Watt.
Which maintenance record entry best describes the action taken for a control cable showing approximately 20 percent wear on several of the individual outer wires at a fairlead?
Wear within acceptable limits, repair not necessary.
Which aircraft record entry best describes a repair of a dent in a tubular steel structure dented at a cluster?
Welded a reenforcing plate over the dented area.
What two types of indicating mediums are available for magnetic particle inspection?
Wet and dry process materials.
When may an otherwise qualified mechanic who does not read, write, speak, and understand the English language be eligible to apply for a mechanic certificate?
When employed outside the United States by a U.S. air carrier.
When is a mechanic responsible for checking AD compliance?
When performing an inspection required underpart 91, 125, or 135.
Which of the following statements are correct?
When the collective pitch control lever is raised, the badge angle of all the rotor blades increases uniformly and they create the lift that allows the helicopter to take off vertically.
How is a clevis bolt used with a fork-end cable terminal secured?
With a shear nut tightened to a snug fit, but with no strain, imposed on the fork and safetied with a cotter pin
Which of the following logic gates will provide an active high out only when all inputs are different?
XOR.
What will a voltmeter read if properly connected across a closed switch in a circuit with electrical power on?
Zero voltage.
A person working under the supervision of a certificated mechanic with an airframe and powerplant rating is not authorized to perform
a 100-hour inspection.
When approving for return to service after maintenance or alteration, the approving person must enter in the maintenance record of the aircraft
a description (or reference to acceptable data) of work preformed, date of completion, the name of the person performing the work (if someone else), signature, certificate number, and kind of certificate held.
In magnetic particle inspection, a flaw that is perpendicular to the magnetic field flux lines generally causes
a large disruption in the magnetic field.
To detect a minute crack using dye penetrant inspection usually requires
a longer-than-normal penetrating time.
A wing with a very high aspect ratio (in comparison with a low aspect ratio wing) will have
a low stall speed.
When towing a large aircraft
a person should be in the cockpit to operate the brakes.
Weathervaning tendency is greatest when taxiing
a tailwheel-type airplane in a direct crosswind.
A part which is being prepared for dye penetrant inspection should be cleaned with
a volatile petroleum-base solvant.
According to Dr. James Reason, there are two types of human failure which can occur. They are:
active and latent.
In performing a dye penetrant inspection, the developer
acts as a blotter to produce a visible indication.
Primary responsibility for compliance with Airworthiness Directives lies with the
aircraft owner or operator.
14 CFR Part 65 contains information for the certification of
airmen other than flight crew members.
A drawing in which the subassemblies or parts are shown as brought together on the aircraft is called
an installation drawing..
The 100-hour inspection required by Federal Aviation Regulations for certain aircraft being operated for hire may be performed by
appropriately rated mechanics and approved by them for return to service.
If work performed on an aircraft has been done satisfactorily, the signature of an authorized person on the maintenance records for maintenance or alterations performed constitutes
approval for a return to service only for the the work performed.
FAA certificated mechanics may
approve for return to service a minor alteration they have performed appropriate to the rating(s) they hold.
If all, or a significant part of a stall strip is missing on an airplane wing, a likely result will be
asymmetrical lateral control at or near stall angles of attack.
The working voltage of a capacitor in an ac circuit should be
at least 50 percent greater than the highest applied voltage.
In a P-N-P transistor application, the solid state device is turned on when the
base is negative with the respect to the emitter.
In an N-P-N transistor application, the solid state device is turned on when the
base is positive with respect to the emitter.
The Society of Automotive Engineers (SAE) and the American Iron and Steel Institute use a numerical index system to identify the composition of various steels. In the number '4130' designating chromium molybdenum steel, the first digit indicates the
basic alloying element.
(Refer to Figure 23.) If R(2) sticks in the up position, the light will
be on full bright.
If the volume of a confined gas is doubled (without the addition of more gas), the pressure will (assume the temperature remains constant)
be reduced to one-half its original value.
The color of 100LL fuel is
blue.
(1) An aircraft part may be demagnetized by subjecting it to a magnetizing force from alternating current that is gradually reduced in strength. (2) An aircraft part may be demagnetized by subjecting it to a magnetizing force from direct current that is alternately reversed in direction and gradually reduced in strength. Regarding the above statements,
both No. 1 and /no. 2 are true.
(1) A detail drawing is a description of a single part. (2) An assembly drawing is a description of an object made up of two or more parts. Regarding the above statements,
both No. 1 and No. 2 are true.
(1) A measurement should not be scaled from an aircraft print because the paper shrinks or stretches when the print is made. (2) When a detail drawing is made, it is carefully and accurately drawn to scale, and is dimensioned. Regarding the above statements,
both No. 1 and No. 2 are true.
The Air Transport Association of America (ATA) Specification No. 100 (1) establishes a standard for the presentation of technical data in maintenance manuals. (2) divides the aircraft into numbered systems and subsystems in order to simplify locating maintenance instructions. Regarding the above statements,
both No. 1 and No. 2 are true.
(1) In nondestructive testing, a discontinuity may be defined as an interruption in the normal physical structure or configuration of a part. (2) A discontinuity may or may not affect the usefulness of a part. Regarding the above statements,
both no. 1 and No. 2 are true.
Instrument repairs may be performed
by an FAA-approved instrument repair station.
The reheating of a heat treated metal, such as with a welding torch
can significantly alter a metal's properties in the reheated area.
(Refer to Figure 23.) If an open occurs at R(1), the light
cannot be turned off.
(Refer to Figure 17.) The electrical symbol represented at number 5 is a variable
capacitor.
In nickel-cadmium batteries, a rise in cell temperature
causes a decrease in internal resistance.
A particular component is attached to the aircraft structure by the use of an aircraft bolt and a castle tension nut combination. If the cotter pin hole does not align within the recommended torque range, the acceptable practice is to
change washers and try again.
The speed of sound in the atmosphere
changes with a change in temperature.
If a radial engine has been shut down for more than 30 minutes, the propeller should be rotated through at least two revolutions to
check for hydraulic lock.
Aircraft bolts are usually manufactured with a
class 3 fit for the threads.
Unless otherwise specified, torque values for tightening aircraft nuts and bolts relate to
clean, dry threads.
(Refer to Figure 15.) The No. 7 wire is used to
close the PUSH-TO-TEST circuit
Forward biasing of a solid state device will cause the device to
conduct.
The method used to rapidly charge a nickel-cadmium battery utilizes
constant voltage and varying current.
What is the likely result of servicing and charging nickel-cadmium and lead acid batteries together in the same service area?
contamination of both types of batteries.
Generally, when an induction fire occurs during starting of a reciprocating engine, the first course of action should be to
continue cranking and starting the engine if possible.
If an engine fire develops during the starting procedures the first step you should take in extinguishing the fire is
continue cranking to start the engine and blow out the fire.
Airworthiness Directives are issued primarily to
correct an unsafe condition.
(Refer to Figure 16.) The TCO relay will operate if 24-volts dc is applied to the bus and the fuel tank selector is in the
crossfeed position.
The end-of-charge voltage of a 19-cell nickel-cadmium battery, measured while still on charge,
depends upon its temperature and the method used for charging.
Working drawings may be divided into three classes. They are:
detail drawings, assembly drawings, and installation drawings.
The temperature to which humid air must be cooled at constant pressure to become saturated is called
dewpoint.
Which of the following is NOT considered a method of heat transfer?
diffusion.
The measurements showing the ideal or 'perfect' sizes of parts on drawings are called
dimensions.
A hydraulic system schematic drawing typically indicates the
direction of fluid flow through the system.
The boiling point of a given liquid varies
directly with pressure.
A simple way to find the center of a circle on a sketch or drawing, or a circular piece of material is to
draw to non-parallel chord lines across the circle then a corresponding perpendicular bisector lines across each chord line.
Unless otherwise specified, any values given for current or voltage in an ac circuit are assumed to be
effective values.
Nickel-cadmium batteries which are stored for a long period of time will show a low liquid level because
electrolyte becomes absorbed into the plates.
The purpose of stall strips on airplane wings is to
ensure that the wing root stall first.
When different rated capacitors are connected in parallel in a circuit, the total capacitance is (Note: C(T) = C(1) + C(2) + C(3) . . .)
equal to the sum of all capacitances.
When inductors are connected in series in a circuit, the total inductance is (where the magnetic fields of each inductor do not affect the others) (Note: L(T) = L(1) + L(2) + L(3) . . .)
equal to the sum of the individual inductances.
Generally speaking, bolt grip lengths should be
equal to the thickness of the material which is fastened together.
A cabin entry light of 10 watts and a dome light of 20 watts are connected in parallel to a 30-volt source. If the voltage across the 10-watt light is measured, it will be
equal to the voltage across the 20-watt light.
When a discrepancy list is provided to an aircraft owner or operator after an inspection, it says in effect that
except for these discrepancies, the item inspected is airworthy.
The drawings often used in illustrated parts manuals are
exploded view drawings.
Magnetic particle inspection is used primarily to detect
flaws on or near the surface.
When starting and ground operating an aircraft's engine, the aircraft should be positioned to head into the wind primarily
for engine cooling purposes.
One purpose for schematic diagrams is to show the
functional purpose of components within a system
Sketches are usually made easier by the use of
graph paper.
A fuel that does not vaporize readily enough can cause
hard starting.
The core material of Alclad 2024-T4 is
heat-treated aluminum alloy, and the surface material is commercially pure aluminum.
A line used to show an edge which is not visible is a
hidden line.
Characteristics of aviation gasoline are
high heat value, high volatility.
The testing medium that is generally used in magnetic particle inspection utilizes a ferromagnetic material that has
high permeability and low retentivity.
The term that describes the combined resistive forces in an ac circuit is
impedance.
Tetraethyl lead is added to aviation gasoline to
improve the gasoline's performance in the engine.
The electrolyte of a nickel-cadmium battery is the lowest when the battery is
in a discharge condition.
The electrolyte of a nickel cadmium battery is highest when the battery is
in a fully charged condition.
The correct way to connect a test voltmeter in a circuit is
in parallel with a unit.
Examples of units used in the conventional (U.S. or English) measurement include
inch, feet, and yard.
The purpose of aircraft wing dihedral is to
increase lateral stability.
The desired effect of using winglets on an aircraft's wingtips is to
increase the lift to drag ratio.
The opposition offered by a coil to the flow of alternating current is called (disregard resistance)
inductive reactance.
The basis for transformer operation in the use of alternating current is mutual
inductive.
Normalizing is a process of heat treating
iron-base metals only.
Under the Federal Aviation Regulations, an aviation maintenance technician is required to perform maintenance on an aircraft so that it
is at least to its original pr property altered condition.
Transfer of electric energy from one circuit to another without the aid of electrical connections
is called induction.
In the reading of aircraft blueprints, the term 'tolerance,' used in association with aircraft parts or components,
is the difference between extreme permissible dimensions that may have still be acceptable.
When an airworthy (at the time of sale) aircraft is sold, the Airworthiness Certificate
is transferred with the aircraft.
Both gasoline and kerosene have certain advantages for use as turbine fuel. Which statement is true in reference to the advantages of each?
kerosene has a higher energy/value per unit volume than gasoline.
The main differences between grades 100 and 100LL fuel are
lead content and color.
(Refer to Figure 1.) When different rated capacitors are connected in series in a circuit, the total capacitance is
less than capacitance at the lowest rated capacitor.
When calculating power in a reactive or inductive ac circuit, the true power is
less than the apparent power.
(Refer to Figure 3.) When more than two inductors of different inductances are connected in parallel in a circuit, the total inductance is
less than the inductance of the lowest rated inductor.
In an ac circuit, the effective voltage is
less than the maximum instantaneous voltage.
In examining and evaluating a welded joint, a mechanic should be familiar with
likely ambient exposure conditions and intended use of the part, along with type of weld and original part material composition.
Zone numbers on aircraft blueprints are used to
locate parts, sections, and views on large drawings.
An aircraft Type Certificate Data Sheet contains
location of the datum.
The replacement of fabric on fabric-covered parts such as wings, fuselages, stabilizers, or control surfaces is considered to be a
major repair even though no other alteration or repair is preformed.
An FAA Form 337 is used to record and document
major repairs and major alterations.
14 CFR Part 65 Subpart D contains regulations regarding the certification of
mechsnics.
All of the following are consequences of human error, except
mental stressor.
The replacement of a damaged engine mount with a new identical engine mount purchased from the aircraft manufacturer is considered a
minor repair.
The replacement of a damaged vertical stabilizer with a new identical stabilizer purchased from the aircraft manufacturer is considered a
minor repair.
A fully charged lead-acid battery will not freeze until extremely low temperatures are reached because
most of the acid is in the solution.
When taxiing (or towing) an aircraft, a flashing red light from the control tower means
move clear of the runway/taxiway immediately.
Convert farads to picofarads by:
multiplying farads by 10 to the power of 12.
Convert farads to microfarads by
multiplying farads by 10 to the power of 6
(1) Certificated mechanics with an airframe rating may perform a minor repair to an airspeed indicator providing they have the necessary equipment available. (2) Certificated mechanics with a powerplant rating may perform a major repair to a propeller providing they have the necessary equipment available. Regarding the above statements,
neither No. 1 nor No.2 is true.
The presence of any small amount of potassium carbonate deposits on the top of nickel-cadmium battery cells in service is an indication of
normal operation.
If both the volume and the absolute temperature of a confined gas are doubled, the pressure will
not change.
The three types of human error are
omission, commission, and extraneous.
(1) A Supplemental Type Certificate may be issued to more than one applicant for the same design change, providing each applicant shows compliance with the applicable airworthiness requirement. (2) An installation of an item manufactured in accordance with the Technical Standard Order system requires no further approval for installation in a particular aircraft. Regarding the above statements,
only No. 1 is true.
(1) Jet fuel is of higher viscosity than aviation gasoline and therefore holds contaminants better. (2) Viscosity has no relation to contamination of fuel. Regarding the above statements,
only No. 1 is true.
(1) The Federal Aviation Regulations require approval after compliance with the data of a Supplemental Type Certificate. (2) An installation of an item manufactured in accordance with the Technical Standard Order system requires no further approval for installation in a particular aircraft. Regarding the above statements,
only No. 1 is true.
(1) According to 14 CFR Part 91, repairs to an aircraft skin should have a detailed dimensional sketch included in the permanent records. (2) On occasion, a mechanic may need to make a simple sketch of a proposed repair to an aircraft, a new design, or a modification. Regarding the above statements,
only No. 2 is true.
(1) Manufacturer's data and FAA publications such as Airworthiness Directives, Type Certificate Data Sheets, and advisory circulars are all approved data. (2) FAA publications such as Technical Standard Orders, Airworthiness Directives, Type Certificate Data Sheets, and Aircraft Specifications and Supplemental Type Certificates are all approved data. Regarding the above statements,
only No. 2 is true.
(1) Propellers are NOT included in the Airworthiness Directive system. (2) A certificated powerplant mechanic may make a minor repair on an aluminum propeller and approve for return to service. Regarding the above statements,
only No. 2 is true.
(1) Schematic diagrams indicate the location of individual components in the aircraft. (2) Schematic diagrams indicate the location of components with respect to each other within the system. Regarding the above statements,
only No. 2 is true.
A thermal switch, or thermal protector, as used in an electric motor, is designed to
open the circuit in order to allow cooling of the motor.
The pattern for an inclusion is a magnetic particle buildup forming
parallel lines.
Certificated mechanics, under their general certificate privileges, may
perform 100-hour inspection instruments.
An Airworthiness Directive requires that a propeller be altered. Certificated mechanics could
perform and approve the work for return to service if it is a minor alteration.
(Refer to Figure 20.) Troubleshooting an open circuit with a voltmeter as shown in this circuit will
permit the battery voltage to appear to the voltmeter.
The amount of electricity a capacitor can store is directly proportional to the
plate area inversely proportional to the distance between plates.
When stopping a nosewheel-type airplane after taxiing (or towing), the nosewheel should be left
pointed straight ahead.
An airplane wing is designed to produce lift resulting from
positive air pressure below the wing's surface along with the downward deflection of air.
The purpose of providing a space underneath the plates in a lead acid battery's cell container is to
prevent sediment buildup from conducting the plated of a sort circuit.
(Refer to Figure 18.) The control valve switch must be placed in the neutral position when the landing gears are down to
prevent the warning horn from sounding when the throttles at closed..
Many areas of aviation have shifted their focus from eliminating error to
preventing and managing error.
During an annual inspection, if a defect is found which makes the aircraft unairworthy, the person disapproving must
provide a written notice of the defect to the owner.
Aviation Maintenance Alerts (formerly General Aviation Airworthiness Alerts)
provide information about aircraft problems and suggested corrective actions.
Alclad is a metal consisting of
pure aluminum surface layers on an aluminum alloy core.
Characteristics of detonation are
rapid rise in cylinder pressure, excessive cylinder head temperature, and a decrease in engine power.
Diodes are used in electrical power supply circuits primarily as
rectifiers.
If the temperature of a confined liquid is held constant and its pressure is tripled, the volume will
remain the same.
When taxiing (or towing) an aircraft, a flashing white light from the control tower means
return to starting point.
When checking an item with the magnetic particle inspection method, circular and longitudinal magnetization should be used to
reveal all possible defects.
A certificated mechanic shall not exercise the privileges of the certificate and rating unless, within the preceding 24 months, the Administrator has found that the certificate holder is able to do the work or the certificate holder has
served as a mechanic under the certificate and rating for at least 6 months.
One way a part may be demagnetized after magnetic particle inspection is by
slowly moving the part out of an ac magnetic field of sufficient strength.
If it is necessary to accurately measure the diameter of a hole approximately 1/4 inch in diameter, the mechanic should use a
small-hole gauge and determine the size of the hole by taking a micrometer reading of the ball end of the gauge.
Capacitors are sometimes used in dc circuits to
smooth out slight pulsations in current/voltage.
Aircraft bolts with a cross or asterisk marked on the bolthead are
standard steel bolt.
A specific measured distance from the datum or some other point identified by the manufacturer, to a point in or on the aircraft is called a
station number.
A fiber-type, self-locking nut must never be used on an aircraft if the bolt is
subject to rotation.
When first starting to move an aircraft while taxiing, it is important to
test the breaks.
The voltage drop in a circuit of known resistance is dependent on
the amperage of the circuit.
Self-locking nuts may be used on aircraft provided that
the bolt or nut are subjective to rotation.
In the four-digit aluminum index system number 2024, the first digit indicates
the major alloying element.
A repair, as performed on an airframe, shall mean
the restoration of the airframe to a condition for safe operation after damage or deterioration.
A hung start in a jet engine is often caused by
the starter cutting off too soon.
When we think of aviation safety in a contemporary way, human error is
the starting point.
A person should approach or leave a helicopter in the pilot's field of vision whenever the engine is running in order to avoid
the tail rotor.
What effect, if any, will aviation gasoline mixed with jet fuel have on a turbine engine?
the tetraethyl lead in the gasoline forms deposits on the turbine blades.
The total piston displacement of a specific engine is
the total displaced by all pistons during the revolution of the crankshaft.
The clearance between the piston rings and the ring lands is measured with a
thickness gauge.
The side clearances of piston rings are measured with a
thickness gauge.
The twist of a connecting rod is checked by installing push-fit arbors in both ends, supported by parallel steel bars on a surface plate. Measurements are taken between the arbor and the parallel bar with a
thickness gauge.
When a charging current is applied to a nickel cadmium battery, the cells emit gas
toward the end of the charging cycle.
For sketching purposes, almost all objects are composed of one or some combination of six basic shapes; these include the
triangle, circle, cube, cylinder, cone, sphere.
Jet fuel number identifiers are
type numbers and have no relation to the fuel's performance in the aircraft engine.
Under which conditions will the rate of flow of a liquid through a metering orifice (or jet) be the greatest (all other factors being equal)?
unmetered pressure, 17 PSI; metered pressure, 5 PSI; atmospheric pressure, 14.7 PSI.
Unless otherwise specified or required, aircraft bolts should be installed so that the bolthead is
upward, or in a forward direction.
When taxiing an airplane with a quartering tailwind, the elevators and
upwind aileron should be held in the down position.
A fuel that vaporizes too readily may cause
vapor lock.
The potential difference between two conductors which are insulated from each other is measured in
volts.
If dye penetrant inspection indications are not sharp and clear, the most probable cause is that the part
was not thoroughly washed before the developer was applied.
(Refer to Figure 25.) In a functional and operating circuit, the depicted logic gate's output will be 0
when one or more inputs are 0.
The "SHEL" model is another human factors tool. The goal is to determine not only what the problem is, but also
where and why it exist.
Aspect ratio of a wing is defined as the ratio of the
wingspan to the mean chord.