2022 FAA General Written Test
What is the measured voltage of the series-parallel circuit between terminal A and B? (cheet sheet) #479
3.0 volts
How much power must a 24volt generator furnish to a system which contains the following loads? (1 hp = 746 watts) #473
450 watts
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
When an aircraft is weighed with full fuel tanks, which device is used to determine the weight of the fuel
A hydrometer
Detection of a minute crack using dye penetrant inspection usually requires
A longer-than-normal penetrating time
Who has the authority to approve for return to service a powerplant or propeller or any part thereof after a 100 hour inspection?
A mechanic with a powerplant rating
Find the value of 10 raised to the negative sixth power.
0.000001
How much current does a 30-volt, 1/2 hp motor that is 85% efficient draw from the bus? (note: 1 hp = 746 watts)
14.6 amperes
What is the speed of the spur gear with 42 teeth driven by a pinion gear with 14 teeth turning 420 rpm?
140 rpm
If R3 is disconnected at terminal D, what will the ohmmeter read? (#489)
Infinite resistance
Flexible hose used in aircraft systems is classified in size according to the
Inside diameter
An aircraft scheduled for a 100hr inspection has flown 98 hours since the last inspection. It is currently located 4 hours from its primary maintenance facility. What must be done?
It is close enough for government.
Which statement is true regarding the residual method of magnetic particle inspection?
It is only used with steels that have been heat treated
What is the primary disadvantage of using kerosene as a solvent
It leaves a residue which must be further cleaned with other solvents.
The heat transfer process of convection occurs in
Liquids and gasses
Zone numbers on aircraft blueprints are used to
Locate parts, sections, and views on large drawings.
What type of stability for an airplane involves the tendency for the nose to pitch up or down, rotating around the lateral axis
Longitudinal stability
Where are the title blocks normally located on an aircraft drawing?
Lower right-hand corner
What tool is generally used to set a divider to an exact dimension?
Machinist scale
Which of these materials is the most anodic?
Magnesium
In the material designation number "4130" for chromium molybdenum steel what does the first digit 4 indicate?
Main alloying ingredient
A TCDS specifies?
Make and model engine allowed
A bolt with a raised or recessed triangle on the head is classified as what?
NAS close tolerance bolt
A 7lb component located at an arm of +146 is replaced with a 4lb component at the same location, how does this effect the overall CG of the aircraft?
Not enough information is given
which statements are true regarding the tiedown of 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 down wind in order to minimize wing lift. 4.Leave the nose wheel or tail wheel unlocked
Nylon or Dacron rope is preferred to manila rope
When taxing or towing an aircraft, an alternating red and green light from the control tower means
OK to proceed but exercise extreme caution
The binary number system is most useful in aircraft electronics because those systems are either
ON or OFF
Which government agency regulates policy regarding workplace safety in aviation facilities?
OSHA
Which is newtons first law of motion?
Objects at rest tend to stay at rest and objects in motion tend to remain in motion at the same speed and duration, unless acted upon by an external force. (inertia)
When an aircraft is struck by lightning in flight, which components are the most likely to suffer damage?
Non-electrically conductive composite and plastic components
What does the following describe? "When two adjacent objects have the same natural frequency and one starts to vibrate; that wave energy can be transferred to the other object causing it to vibrate as well."
Resonance
Which type of ultrasonic testing would normally be used to measure the thickness of a material when the backside surface is inaccessible?
Resonance
Of those listed below, which is the best countermeasure to combat fatigue?
Sleeping at regular intervals
According to regulations, what determines whether an aircraft is considered "Large" or "Small"
Small= max certified takeoff weight < 12,500lbs Large= max certified takeoff weight >12,500lbs
Which of the listed conditions is NOT one of the requirements for corrosion to occur?
The presence of a passive oxide film
Which statement concerning Bernoulli's principle is true?
The pressure of a fluid decreases at points where the velocity of the fluid increases
What is the definition of proportion?
A statement of equality between two or more ratios
When and/or where is galvanic corrosion most likely to occur?
At the interface of a steel fastener and aluminum alloy inspection plate in the presence of an electrolyte.
When dealing with weight and balance of an aircraft, the term "maximum weight" is interpreted to mean the maximum
Authorized weight of the aircraft and its contents
What color fuel would you expect to find in a modern single engine piston powered airplane
Blue
Which of the following statements is true? 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 a direct current that is alternately reversed in direction and gradually reduced in strength.
Both and true
Name four of the seven main components of a helicopter
Cabin, tail boom, transmission, powerplant
Which type of specialty fastener would be best suited to secure an aircraft cowling?
Camloc fasteners
Which is NOT an advantage of the eddy current nondestructive inspection technique?
Can be used with almost all types of structural material.
Which is an advantage of the radiographic inspection technique?
Can often be accomplished without disassembly of the part from the aircraft.
Which material cannot be heat treated repeatedly without harmful effects?
Clad aluminum alloy
What class of fire involves the combustion of metallic material such as Magnesium?
Class D
What tool can be used to measure the alignment or bend of a rotor shaft or for warp in a rotating component?
Dial indicator
The measurements showing the ideal or "perfect" sizes of parts on drawings are called
Dimensions
What is/are the appropriate action(s) concerning minor repairs performed on a certified aircraft
Entries must be made in the aircraft's maintenance records
Which cleaning substance is acceptable to use on oxygen system equipment?
Ethyl alcohol
How often must an altimeter static system or altitude encodiung transponder be inspected by a properly rated inspector?
Every 24 months and anytime the static system is opened and closed
Which is a characteristic of a good gas weld?
The weld should taper off smoothly into the base metal
Based on newtons second law of motion, the formula to calculate thrust is?
F= W(Vf-Vi)/Gt
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 manufacturers structural repair manual no. 28-1"
FAA form 337
Which statement is true regarding the use of a FAA form 337
FAA form 337 is not authorized for use with other than U.S. registered aircraft
Which regulatory document(s) describes the standard for maintaining civilian aircraft in the United States?
FAR Part 43
What may be used to remove corrosion from highly stressed steel surfaces?
Fine grit aluminum oxide
The metal titanium, when moistened and drawn across glass, will produce a pencil like line. (true or false)?
True
The amount of fuel used for computing empty weight and corresponding CG is?
Unusable fuel
Which one is not a method of controlling boundary layer air?
Wingtip electrical generators
What should be done to prevent rapid deterioration when oil or grease come in contact with a tire?
Wipe the tire with a dry cloth followed by a washdown and rinse with soap and water
A proper procedure to produce a precision hole exactly .125" in dia. would be to drill
a hole at .120" then remove the final .005" with a reamer.
a class three bolt thread is
a medium fit
One millionth of a meter is known as?
a micrometer
When determining the empty weight of an aircraft certified under current airworthiness standards (FAR 23), the oil contained in the supply tank is considered
a part of the empty weight
The voltage drop in a circuit of known resistance is dependent on
amperage of the circuit
Which is the correct formula that defines current?
amperes = charge/ time
A Non electrolytic chemical treatment for aluminum alloys to increase corrosion resistance and paint bonding qualities is called
alodizing
Unless otherwise specified, torque values for tightening aircraft nuts and bolts relate to
clean and dry threads
Which statement(s) below reflect(s) the typical requirement(s) when towing some aircraft? -Discharge all hydraulic pressure -tailwheel aircraft should be towed backwards -if the aircraft has a steerable nose wheel, the torque-link lock should be set to full swivel
Torque-link locks should be set to full swivel
Which is correct concerning a parallel circuit?
Total resistance will be smaller than the smallest resistor.
Self-plugging (friction lock) rivets are typically used when access to both sides of an aircraft surface is difficult or impossible
true
The potential difference between two conductors which are insulated from each other is measured in?
volts
What two types of indicating mediums are available for magnetic particle inspections
wet and dry process materials
Cryofit fittings are often used on transport category aircraft
when routing disconnections are not required
Fretting corrosion is most likely to occur
when two surfaces fit tightly together but can move relative to one another.
the SHEL model is another human factors tool. The goal is to determine not only what the problem is, but also
where and why the problem exists
Aspect ratio of a wing is defined as the ratio of the
wingspan to the mean chord
Elongated bolt holes in critical aircraft structural members may be drilled to the next larger size
with manufacturers approval
A Rockwell test of affected components would be useful during an inspection of an aircraft subject to
fire damage
What wrench is used on the b-nut of a fuel or hydraulic line?
flare nut wrench
The best tool for cutting aluminum tubing or any tubing of moderately soft metal is
hand operated wheel-type tubing cutter
Which procedure is recommended to keep aircraft control cables free of tension?
keep cables coated with light oil film
When refilling an aircraft with nitrogen, the system you are typically servicing is -landing gear -engine boost pumps -cabin climate control systems
landing gear
The elevator attached to the horizontal stabilizer is a type of flight control or directional control for the
lateral axis
The ailerons or the spoilers on a jet transport are types of flight controls or lateral control for the
longitudinal axis
Which of the bolt head code markings shown identifies a corrosion resistant AN standard steel bolt? -plus sign -minus sign -triangle w/ an x in the middle
minus sign
When taxing (or towing) an aircraft, a flashing red light from the control tower means
move clear of the runway/taxiway immediately
When working with fractions, the common denominator can be found by
multiplying all of the denominators together
Which of the following is the correct sequence of number prefixes, from smallest to largest?
nano, hecto, tera
Certificated mechanics, under their general certificate privileges, may
perform 100 hour inspection of instruments
Troubleshooting an open circuit with a voltmeter as shown in the circuit in figure 12-11 will
permit the battery voltage to appear on the voltmeter
The person ultimately responsible for determining whether an aircraft is in airworthy condition is the
pilot in command
The amount of electricity a capacitor can store is directly proportional to the
plate area and inversely proportional to the distance between the plates
Parts are rinsed thoroughly in hot water after they have been heat treated in a sodium and potassium nitrate bath to:
prevent corrosion
The primary purpose of providing suitable bends in fluid and pneumatic metal tubing runs is to
prevent excessive stress on the tubing
The purpose of providing a space underneath the plates in a lead acid battery's cell is to
prevent sediment buildup to contact the plates and cause a short circuit
If an AD is issued without an NPRM, typically when is compliance required?
prior to the next flight
Which inspection schedule plan must be individually approved by an FAA flight standard district office?
progressive annual inspection
Improper loading of a helicopter which results in exceeding either the fore or aft CG limits is hazardous due to the
reduction or loss of effective cyclic pitch control
In a metal tubing installation;
tension is undesirable because pressurization will cause it to expand and shift
Referring to figure 12-12 below, with the landing gear retracted, the red indicator light will not come on if an open occurs in wire
#19
Which statements are true? 1. Schematic drawings indicate the location of individual components in the aircraft. 2. Schematic diagrams indicate the location of components with respect to each other within a system
#2 is true. (SCHEMATIC = SYSTEM)
Referring to figure 12-12 below, when the landing gear is down, the green light will not come on if an open occurs in which wire?
#6
In a balance computation of an aircraft from which an item located aft of the datum was removed, use
(-)weight x (+)arm (-)moment
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 -2.10 inches included in the weight scale.
+96.11"
Which of the following defects are not acceptable for metal lines?
-Cracked flare -Seams -Dents in the heel of a bend less than 20% the tube diameter -Dents in straight sections that are 20% of the wall thickness
An airplane is flying at 22,000 feet above sea level. The current temperature at sea level is -4 and the temp at 22,000 feet is 25 degrees cooler. If the ratio of temp change remains constant as altitude is increased, what is the temp at 30,000 feet?
-38
Which of the following is an effect of annealing steel and aluminum alloys?
-A decrease in internal stress -A softening of the metal
Which statements regarding aircraft bolts are correct?
-Alloy bolts smaller than 1/4" diameter should not be used in primary structures -In general, bolt grip lengths should equal the material thickness
Which of the following hose materials are compatible with phosphate-ester base hydraulic fluids
-Butyl -Teflon
Which of the following occurs when a mechanical force is repeatedly applied to most metals at room temperature, such as rolling, hammering, or bending?
-The metals become artificially aged -The metals become cold worked, strained, or work hardened
Find the sqr rt of 1,824
.42708 x 10^2
Which number represents the vernier scale graduation of a micrometer?
.0001
The number 3.47 x 10^-4
.000347
What is the allowable manufacturing tolerance for a bushing where the outside dimensions shown on the blueprint are: 1.0625 +.0025 -.0003?
.0028
A dimension on a drawing is given as 4.387" +005, -002. What is the maximum tolerance?
.007
Square root of 36 + sqr rt of 49/17 squared
.045
What is the total capacitance of a circuit containing 3 capacitors with capacitances of .25 microfarad, .03 microfarad, and .12 microfarad?
.4 microfarad
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 2ohms resistance. The internal resistance of the battery in this instance is?
0.52ohm
An aircraft bolts has an overall length of 1-1/2 inches, a shank length of 1-3/16 inches, an a threaded portion length of 5/8 inch. What is the grip length? (decimal form)
0.5625 inch
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?
0.606 inch
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 apmere
Which is true regarding the statements below: 1. An STC 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 (TSO) system requires no further approval for installation in a particular aircraft
1
a 12v electric motor has 1,000w input and 1hp output. maintaining the same efficiency how much input power will a 24v, 1hp electric motor require?
1,000 watts
What force is exerted on the piston in a hydraulic cylinder if the area of the pipston is 1.2 sqr inches and the fluid pressure is 850psi?
1,020lbs
Find the sqr rt of 124.9924 (scientific notation)
1,118 x 10^-2
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 symptoms of fatigue?
1,3,4,6 1. Short-term memory loss 3. Tiredness 4. Failure to maintain situational overview 6. Mood swings
Which of the following methods may be suitable for detecting cracks open to the surface in aluminum forgings and castings?
1,4,5,6 1.Dye or liquid penetrant inspection 4.Eddy current inspection 5.Ultrasonic inspection 6.Visual inspection
The battery of an unmanned aircraft is 21% discharged. The capacity of the battery is 2,400 amps. How many amps remain in the battery?
1,896 amps
Which of the following may a certified airframe and powerplant mechanic perform on an aircraft and approve for return to service?
1. 100 hour inspection 3.a progressive inspection, under specified circumstances.
Which of the following statements is 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 but same voltage can be connected in parallel with each other across the charger, and charged using the constant voltage method.
Which of the following are privileges of holding and IA rating, beyond those permitted with only an A&P license?
1. Perform and approve return to service an annual or progressive inspection 4. Approve return to service of an aircraft part following a major repair
Which of these factors are considered essential knowledge for x-ray exposure?
1. Processing of the film 2. Material thickness 3. Exposure distance and angle 4. Film characteristics
Determine total current flow in the circuit (#495)
1.4 amperes.
Which alternative answer is equal to 16,300 (scientific notation)
1.63 x 10^4
Which of the following are the desired effects of using Alodine on aluminum alloy?
1.A slightly rough surface. 4.Increased corrosion resistance
If a metal joint includes contact from magnesium to another metal, the correct procedure is to:
1.Apply at least 2 coats of epoxy primer to each mating surface. 2. Apply vinyl tape between the mated surfaces.
Select the fractional equivalent for a 0.0625 inch thick sheet of aluminum.
1/16
What is the formula to find area of a triangle?
1/2 x base x height
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 (see formula #509)
10 ohms
What will the ohmmeter read? (#490)
10 ohms
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
Scratches or nicks on the straight portion of aluminum alloy tubing may be repaired if they are no deeper than
10% the wall thickness
Convert the decimal number 147 to a binary number (2^7=128; 2^6=64; 2^5=32; 2^4=16; 2^3=8; 2^2=4; 2^1=2; 2^0=1) 1.10001001 2.10100001 3.10010011
10010011
What sound level becomes dangerous and requires the use of hearing protection?
100db
What force is exerted on the piston in a hydraulic cylinder if the area of the piston is 1.2 sqr inches and the fluid pressure is 850 psi?
1020lbs
What power of 10 is equal to 1,000,000
10^6
We need to calculate the acceleration of an airplane travelling at 300mph. The pilot pushes the throttle to a speed of 600mph in 30 seconds. What is the airplanes average acceleration in mph/s?
10mph/s
A blueprint shows a hole of 0.17187 to be drilled. Which fraction size drill bit is most nearly equal?
11/64
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 cubic feet
What is the maximum duration of a temporary airmen certificate?
120 days
Which regulation provides the airworthiness standards from an airplane certified 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 FARs prescribes the requirements for issuing mechanic certificates and associates ratings and the general operating rules for the holders of these certificates and ratings?
14 CFR part 65
When choosing a hacksaw blade, which pitch of the blade's teeth is best for cutting cold rolled or structural steel?
14 pitch
A regular 100 hour inspection is performed on an aircraft which is partially used for hire and on which the hobbs meter reads 1407 hours. When is the next 100 hour inspection due?
1500 hours
When an aircraft is weighed, the combined net weight at the main gear is 3540lbs at an arm of 83.5". The datum line is forward of the nose of the aircraft. What is the empty CG of the aircraft?
151.1
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?
151.360
Which of the following is equal to the sqr rt of (-1776) / (-2) - 632?
16
Consider the following on a large aircraft, and convert the CG location from inches to percent of MAC: -The CG is located at 283" behind the datum -LEMAC is located at 270" behind the datum -TEMAC is located at 324" behind the datum
17%
The standard weight of a person, for the purposes of weight and balance calculations is
170lbs
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?
186
A pilot flies .81 of the way to her destination before she stops and refuels. How much is left on her trip? (percentage form)
19%
what is the speed ratio of an input gear with 36 teeth meshed to a gear with 20 teeth?
1:1.8
How many instruments (voltmeters and ammeters) are installed correctly? (#513)
2
Which is true regarding the statements below: 1. Manufactureers data and FAA publications such as ADs, TCDSs, and advisory circulars are all approved data 2. FAA publications such as technical standard orders (TSOs), ADs, TCDSs, aircraft specifications and STCs are all aproved data
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 & 3
Liquid penetrant inspection methods may be used on which of the following?
2,3,5 2.Ferrous metals 3.Nonferrous metals 5.Nonporous plastics
How much power is being furnished to the circuit depicted in figure 12-1 below?
2,645 watts
1.2KV equals
2.0 volts
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?
2.5 feet
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 approx piston displacement of this engine?
200 cubic inches
Find the total resistance in the circuit (#491)
21.2 ohms
convert the binary number 11011001 to a decimal number. (2^7=128; 2^6=64; 2^5=32; 2^4=16; 2^3=8; 2^2=4; 2^1=2; 2^0=1)
217
Find the voltage across the 8-ohm resistor. (cheet sheet) #482
24 volts
In a parallel circuit with four 6 ohm resistors across a 24 volt battery, what is the total voltage across resistor 3 in the circuit?
24 volts
A 24V source is required to furnish 48W to a parallel circuit consisting of 4 resistors of equal value. What is the voltage drop across each resistor?
24v
When approaching the front of an idling jet engine, the hazard area extends forward of the engine -10 feet -15 feet -25 feet
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 28v generator be required to supply to a current containing five lamps in parallel, three of which have a resistance of 6ohms each and two have a resistance of 5 ohms each?
25.23 amperes
What is the operating resistance of a 30-watt light bulb designed for a 28v system?
26 ohms
What is the opening area of an aircraft engines cylinder if the inside diameter or bore is 6 inches?
28.274 square inches
If resistor R5 is disconnected at the junction of R4 and R3 as shown, what will the ohm-meter read? #488
3 ohms
If an engine is turning 1,965 rpm at 65 percent power, what is its maximum rpm?
3,023
How long does the holder of a certificate under 14CFR 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 entire surface area of a cube when each side edge measures 7.25 inches?
315.375 sq. in.
An aircraft with an empty weight of 2100 pounds and an empty weight CG of +32.5 was altered as follows: 1. two 18-pound passenger seats located at +73 were removed; 2. structural modifications increasing the weight 17 pounds were made at +77; 3. a seat and safety belt weighing 25 pounds were installed at +74.5; and 4. radio equipment weighing 35 pounds was installed at +95. What is the new empty weight CG?
33.68
The result of 7 raised to the third power plus the sqr rt of 39 =
349.24
A 48v 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.
A triangle includes on 90degree angle. it stands 9 inches tall and has a base of 8 inches, what is its area?
36 square inches
How much work input is required to lower (not drop) a 120lb weight from the top of a 3 foot table to the floor?
360 foot pounds
Which is the proper flare type when fitting 3/8" OD aluminum tube with AN fittings?
37 degree double flare
What is the volume of a sphere with a radius of 4.5 inches? (V=1/6 x pi x D^3)
381.7 cu. in.
Composite aircraft structures can reach up to ___ the tensile strength of steel or aluminum
4-6 times
How many of the following devices are primarily used to modify the amount of lift produced by a wing?
4/5; Flaps, slots, slats, and spoilers
An airplane engine is burning enough fuel to produce 680hp but it is only creating 285. What is the thermal efficiency of this airplane?
41.91%
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
Which type crack can be detected by magnetic particle inspection using either circular or longitudinal magnetization?
45 degree
The maximum distance end fittings to which a straight hose assembly is to be connected is 50inches. The minimum hose length to make such a connection should be?
52 1/2 inches
An aircraft as loaded weighs 4,954 pounds at a CG of +30.5 inches. The CG range is +32.0 inches to +42.1 inches. Find the minimum weight of the ballast necessary to bring the CG within the CG range. The ballast arm is +162 inches.
57.16lbs
What is the ratio of a gasoline fuel load of 200 gallons to one of 1680 pounds?
5:7
What are the maximum number of views possible on an orthographic projection?
6
What is the cube root of 216?
6
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 lbs
How many miles are in a distance of 10 kilometers? (1 mi= 1.62 km)
6.2
Consider the specifications of the following aircraft: -The datum is 30.24" forward of the main gear -The distance from the mean gear to the tail gear is 360.26" -The weight measured on the right main gear is 9,980lbs -The weight measured on the left main gear is 9,770lbs -The weight measured on the tail wheel is 1,970lbs The following items were in the aircraft when weighed: -Lav water weighing 34lbs at an arm of +352 -Ballast weighing 146lbs at an arm of +380 -Hydraulic fluid weighing 22lbs at an arm of +8 What is the empty weight CG as described?
60.31"
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
If the circumference of a circle is 24 inches, what is the approx dia.
7.64 in.
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 %
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
What percentage of aircraft accidents are deemed to be caused by human error?
80%
An engine weighs 350 lbs is removed from an aircraft. The engine is raised 3 feet above its attachment mount, and the entire assembly is then moved forward 12 feet. A constant force of 70lbs is required to move the loaded hoist. What is the total work input required to move the hoist?
840lbs
Express 7/8 as a percent
87.5%
32,000 feet = ? kilometers
9.77 kilometers
For drilling most materials, a bit with a lip angle of 59 degrees is most common. However, for soft metals such as plexiglas, use a bit with a lip angle of
90 degrees
The aluminum code number 1100 identifies what type of aluminum?
99% commercially pure aluminum
a 1-horsepower, 24v DC electric motor that is 80% efficient requires 932.5 watts. How much power will a 1-horsepower, 12v DC motor that is 75% efficient require?
994.6 watts
"Lack of Awareness" is defined as
A failure to recognize all the consequences of an action or lack of foresight
In magnetic particle inspection, a flaw that is perpendicular to the magnetic field flux lines generally causes
A large disruption in the magnetic field
In an aircraft drawing, what type of line would be drawn if it was composed of one long and two short evenly spaced dashes indicating the alternate position of parts of an object or relative position of a missing part
A phantom line
What type of diagram is used to explain a principle of operation, rather than show the parts as they actually appear?
A schematic diagram
Which minimum license is required to perform a 100 hour inspection and authorize that aircraft for return to service?
A&P license
A turbine powered business jet typically undergoes what type of inspection schedule?
A-D checks
Which of these publications contains standards for protrusion of bolts, studs, and screws through self-locking nuts?
AC 43.13-1B
When the specific torque value for nuts is not given, where can the recommended torque value be found?
AC43.13-1B
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?
AN-818-8
Which of the following is true when using all AN300 series nuts (AN310, AN340, etc)?
AN300 series nuts may not be used in high temperature applications
Which of the following ATA systems designation is correct?
ATA 21 regards air conditioning; and ATA 32 regards landing gear
Which condition is the actual amount of water vapor in a mixture of air and water?
Absolute humidity
Which pressure includes atmospheric pressure in its reading?
Absolute pressure
For aircraft operated under part 91, when is aircraft total time required to be recorded in the maintenance records?
After satisfactorily completing inspections
Which mixture of a cubic foot of air will be the most dense?
Air containing 2% water vapor
Placards required on an aircraft are specified in
Aircraft Specifications or TCDS
What record would indicate an approved return to service following a completed annual or 100 hour inspection?
Aircraft logbook
Where do you record the compliance of an AD or manufacturers service bulletin?
Aircraft maintenance records
If more space is needed for a work description entered on FAA for 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 and the record entry requirements for inspections?
Aircraft total time is required to be included only in the inspection entry
Which publication would describe work required to correct an unsafe condition discovered in the design of an aircraft?
Airworthiness directive
Which form of mathematics can be used to determine the relationship between the radius of a circle to its area?
Algebra
Select the solvent used to clean acrylics and rubber
Aliphatic naptha
Which is NOT an advantage of a Teflon hose?
All are advantages
When aircraft are being cleaned, which of the following safety precautions should be observed?
All of the above 1.Place type ABC fire extinguishers with a booster line at each aircraft entrance 2.Move aircraft outside if flammable liquids are used 3. Turn off all interior electrical devices and switches.
The environment aspect of the PEAR model considers which of the following
All of the above: 1. Work place design 2. Shared goals 3. Company culture 4. Lighting
Which of the following actions can help you avoid complacency?
Always expect to find faults or problems
The speed of sound in the atmosphere is affected by variations in which of the following?
Ambient temperature
Decibels are a measure of a sound's
Amplitude
If a required repair to an aircraft does not have previously approved FAA data, how should the repair be approved?
An FAA field approval must be requested
An A&P mechanic services an aircraft by changingits tires, replacing the brake pads, and bleeding the brake system. How is this work recorded and the aircraft returned to service?
An entry is made in the aircraft's maintenance log
Which of the following describes what is shown by a sectional drawing?
An interior details of the object from the plane in which it was intersected
After an A&P rated mechanic completes a 100 hour inspection, what is required before the aircraft is returned to service?
An operation check of the engine
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
Which statement concerning the logic gate depicted is true? (#537)
Any input being 1 will produce a 1 output
What constitutes a major repair on a light sport aircraft?
Any procedure for which instructions are not included in the maintenance manual
At what point does an aircraft alloy 2017 aluminum rivet obtain its maximum strength?
Approx 9 days after installation
Which of the following is the correct formula to determine the area of a circle?
Area = (Pi) r squared
In the theory of weight and balance, what is the name of the distance from the fulcrum to an object?
Arm
Not alerting others when something does not seem right, not speaking up when the actions of another concern you, or not reporting procedures are poorly written or impractical, are all actions of someone who lacks
Assertiveness
Federal Specification "BB-0-925A Grade A" refers to the acceptability of
Aviators breathing oxygen
What should be the first step of the procedure in sketching an aircraft wing repair?
Block in the views
Which term below is best described "as the velocity of a fluid increases, the static pressure of that fluid will decrease, provided there is no energy added or energy taken away."
Bernoulli's principle
What type of testing best determines a non-ferrous metal's heat treatment condition?
Barcol testing
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 1/2 its original value
If you tried to lift a 200lb aircraft part, which type of pulley design would make for the least effort needed?
Block and tackle
Which statements 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 as carefully and accurately drawn to scale, and is dimensional.
Both are true
Which tap is used to cut full threads in a blind hole?
Bottom tap
Which rivet type is the only blind rivet considered to be interchangeable with a solid rivet?
Bulbed Cherrylock rivets
Upon inspection of an aircraft, it appears to you that the registration number which is visible on the airframe may not be of legal size or placement. Which regulation section would you review to confirm this?
CFR Part 45
Which is the best for extinguishing a carburetor or intake fire? -Dry chemical -A fine water mist -Carbon dioxide
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
When attaching a component to the aircraft structure by way of an aircraft bolt and castelated tension nut combination, what's an acceptable solution when the cotter pin hole doesn't align within the recommended torque range?
Change washers and try again
Which gas law states that all gasses expand and contract in direct proportion to the change in the absolute temperature provided the pressure is held constant?
Charles's law
Which answer is the safety net for Lack of Awareness?
Check if work conflicts with an existing modification or repair.
The branch of human factors that studies an AMTs ability to quickly solve problems is called
Cognitive science
What method of magnetic particle inspection is used most often to inspect aircraft parts for invisible cracks and other defects?
Continuous
Which tool is used to find the center of a shaft or other cylindrical work
Combination set
Which of the following is caused by over confidence in one's ability to perform a task?
Complacency.
Corrosion caused by galvanic action is the result of
Contact between two unlike metals
Stress corrosion cracking is most characteristic with which metal type?
Copper
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?
Corrosion-resistant steel (annealed CRES 304, CRE 321 or CRES 304-1/8-hard
What is the purpose of a couplant used during ultrasonic inspections?
Creates a sealed interface
The useful load of an aircraft consists of the
Crew, usable fuel, passengers, and cargo
What is the procedure to remove a damaged Cryofit fitting?
Cut it off at the sleeve and replace with a swaged fitting
Which is true regarding the use of metal cutting hand snips?
Cutting with snips leaves fractures along the edge line
Which of these will cause the resistance of a conductor to decrease?
Decrease the length or increase the cross sectional area
Which type of FAA designated inspector may conduct maintenance or manufacturing inspections only at the place of their regular employment?
DMIR
Circular magnetization of a part can be used to detect which defects?
Defects parallel to the long axis of the part
Which of the following is not used to express quantities of heat energy?
Degree
Which maintenance record entry best describes the action taken for a 0.125-inch deep dent in a straight section of 1/2inch aluminum alloy tubing?
Dented section removed and replaced with identical new tubing flared to 37 degrees
What is the class of working drawing that is the description/depiction of a single part?
Detail drawing
A lack of communication is a contributing cause for incidents/accidents. Which of the following personal actions can you use to improve communication and mitigate or reduce these risks?
Discuss work to be done or what has been completed
Which behavior or safety net can help reduce errors caused by stress?
Discussing this situation with someone else to get their input and assistance.
A damaged aluminum wing skin is repaired with copper rivets. This repair is done without consulting the manufacturer of the aircraft. What is one problem this may cause?
Dissimilar metal corrosion
What type of measurement is used to designate the arm in weight and balance computation?
Distance
If an aircraft CG is found to be at 24% of MAC, that 24% is an expression of the?
Distance from the LEMAC
Identify the correct statement (measuring tools)
Dividers do not provide a reading when used as a measuring device.
During inspection, you observe an oxidation layer approx. .001" thick on an aluminum wing skin. The proper action is to
Do nothing. The oxidation layer is actually a corrosion inhibitor
What type of pliers are typically used for twisting safety wire?
Duckbill pliers
Which statement about military standard (MS) flareless fittings is correct
During installation MS flareless fittings are normally tightened by turning the nut a specified amount, rather than being torqued
Which stability term represents a small amount of oscillation around both the longitudinal and vertical axes?
Dutch roll
The most important condition to be monitored during start after fuel flow begins in a turbine engine is the -RPM -EGT, TIT, or ITT -oil pressure
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 of the following is not a characteristic of matter?
Energy.
For which of the following are type certificate data sheets issued for?
Engines, propellers, airframes
Which action can help a technician reduce the feelings of pressure to quickly complete a task?
Ensure that the pressure is not self induced
Which precaution must be taken every time a self locking nut us used on an aircraft
Ensure the bolt is not subject to rotation
Teamwork best exists when
Everyone works together toward a common objective
Which type of wave is not a shock wave
Expansion
When solving a complex mathematical equation, which is the proper order of which function to determine first?
Exponents, then divisions, then subtractions
Identify which anti-torque system of a helicopter presents the least amount of risk to personnel on the ground and creates less drag in flight?
Fenestron
When bending metal tubing, what is the maximum amount of flattening permissible in the bend area of the tube?
Flattened portion diameter not less than 75% of the original tube diameter
Which statement is true regarding flattening of tubing in bends?
Flattening by not more than 25% 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?
Flush the surface with clean water
In which of the following cases would a Special Airworthiness Certificate be issued, rather than a standard one?
For Light Sport Aircraft (LSA)
All other things being equal, if an item of useful load located aft of an aircraft's CG is removed, the aircrafts CG will be
Forward, in proportion to the weight of the item and its location in the aircraft
One purpose for schematic diagrams is to show the
Functional location of components within a system
which of the following conditions are required for fire? -Heat, oxygen, fuel -Heat, friction, carbon dioxide -Fuel, combustion, heat
Heat, oxygen, fuel
What experience requirements must be met before being able to apply for an Inspection Authorization?
Held an A&P certificate for 3 years and active as a mechanic for previous 2 years
Which atmospheric conditions will cause the true landing speed of an aircraft to be the greatest?
High temp, High humidity
The priming of a fuel injected horizontally opposed engine is accomplished by placing the fuel lever in the -IDLE-CUTOFF position -AUTO-RICH position -FULL-RICH position
IDLE-CUTOFF
Which is correct in reference to electrical resistance?
If one of three bulbs in a parallel lighting circuit is removed, the total resistance of the circuit will increase
The term that describes the combined resistive forces in an AC circuit is
Impedance
Which behavior or safety net can improve teamwork?
Improved communication and coordination among team members
The electrolyte of a nickel-cadmium battery is highest when the battery is
In fully charged condition
When is a flareless fitting preferable over a flared fitting?
In high pressure systems subjected to constant vibration and stress
What is the correct way to connect a test voltmeter in a circuit?
In parallel with a unit
Examples of units used in the conventional (U.S. or English) measurement include
Inch, ounce, pounds
Which of the following is NOT a benefit of AN960 and AN970 washers?
Increased resistance to the bolt vibrating loose
The opposition offered by a coil to the flow of alternating current is called (disregard resistance)?
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.
Which of the following may not be detectable even by careful visual inspection of the surface of aluminum alloy parts or structures?
Intergranular corrosion
Through which material will magnetic lines of force pass the most readily?
Iron
Normalizing is a process of heat treating for
Iron-base metals only
When reading aircraft blueprints the term tolerance used in association with aircraft parts or components?
Is the difference between extreme permissible dimensions that a part may have and still be acceptable.
What is the primary benefit of an MS33737 instrument nut?
It reduces magnetic influences in the cockpit, which can affect the accuracy of the instrument
Aircraft aluminum skin is easily worked due to these two characteristics:
Its malleable and ductile
load cell scales are commonly found to be the platform type and placed on top of the aircraft:
Jacks
Which type of jet fuel is a blend of kerosene and AvGas?
Jet B
In order to conduct line maintenance on a light sport aircraft such as replacing fuel pump, the technician must hold the minimum rating of
LSA repairman - inspection
Getting applicable training, keeping your knowledge current, using current manuals, asking questions, and asking someone who knows, are all behaviors or safety nets to reduce errors caused by
Lack of knowledge
Aircraft metals should be ___ so they can be formed and shaped without detrimental effect
Malleable
Where would you find information regarding the overhaul schedule for a propeller?
Manufacturers' maintenance manual
The useful load of an aircraft is the difference between
Max takeoff weight and the basic empty weight
Zero fuel weight is
Maximum permissible weight of a loaded aircraft without fuel
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 may be used to check the stem on a poppet type valve for stretch?
Micrometer
What precision measuring instruments are used to measure crankpin and main bearing journals for out of round wear?
Micrometer caliper
What type of synthetic rubber offers the best resistance to aviation fuels and oils and is therefore used for fuel hoses, fuel tank linings, and gaskets?
Neoprene
Which behavior will give you the most credibility and provide the greatest safety net against a Lack of Assertiveness?
Never compromising your integrity
The cast housing of a turbine engine gearbox must be quenched during the heat treatment process. which of the following has the slowest cooling potential?
Oil
Which statements are true? 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.
Only #2 IS TRUE.
Which statements are true? 1. According to FAR Part 91, repairs to an aircraft skin should have a detailed dimensional sketch included in the permanent record. 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.
Only #2.
Which of the below is an appliance major repair? -overhaul of a hydraulic pressure pump -repairs to a propeller governor or its control -troubleshooting and repairing a broken circuit in the landing lights
Overhaul of a hydraulic pressure pump
Which of the following are included in the regulatory definitions of "maintenance"?
Overhaul, repair, parts replacement, preservation, and inspection
The model that incorporates people's actions in relation to their workplace environment, physical abilities, and available resources is the
PEAR model
Which is the correct order of operations when solving an algebraic equation?
PEMDAS
In the process of weighing an airplane to obtain the CG, the arms from the weighing points always extend
Parallel to the centerline of the airplane
When an aircraft is positioned for weighing on scales located under each landing gear wheel, which of the following may cause erroneous scale readings?
Parking brakes set
An AD requires that a propeller be altered. Certificated mechanics could
Perform and approve the work for return to service if it is a minor alteration
In which manner must permanent records of an aircraft be kept?
Permanent records may be preserved in either electronic or physical format
A class B fire involves? -Petroleum -Electrical -Wood, paper
Petroleum
Anthropometrics is the study of
Physical dimensions and abilities of the human body
A fully charged aircraft battery is an example of
Potential energy
Aviation Maintenance Alerts (formerly General Aviation Airworthiness Alerts) do what?
Provide information about aircraft problems and suggested corrective actions
What is the principle benefit of an Alclad aluminum surface?
Pure aluminum is less susceptible to corrosion than aluminum alloys
For aircraft operated under part 91, which of the following records must be retained and transferred with the aircraft when it is sold?
Records of the current status of applicable ADs, and date and time when recurring ADs 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
What tasks are completed prior to weighing an aircraft to determine empty weight?
Remove all items except those on the aircraft equipment list; drain fuel and fill hydraulic fluid reservoir
When installing bonded clamps to support metal tubing;
Remove paint or anodizing from tube at clamp location
In a sectional view drawing, what sections illustrate particular parts of an object?
Removed
Which of the following is not an appropriate use of a center punch?
Removing rivets from holes
The major source of weight change for most aircraft as they age is caused by
Repairs and alterations made to the aircraft over time
Which is the best way to insure you have understood verbal instructions?
Repeat the instructions back to the speaker.
A mechanic applicant is issued a temporary certificate after successful completion of all the required tests to allow for what?
Review of his or her application and supplementary documents
Which one of the following can provide the empty weight of an aircraft if the aircraft's weight and balance records become lost, destroyed, or otherwise inaccurate?
Reweighing the aircraft with the proper configuration for determining weight
during starting of a turbine engine using a compressed air starter, a hung start occurred. select the proper procedure: -Advance the power lever to increase rpm -re-engage the starter -Shut down the engine
Shut the engine down
What is the regulatory definition of "preventative maintenance"?
Simple or minor preservation operations and the replacement of small standard parts not involving complex assembly operations
Thermal expansion is very slight in
Solids
Use of which of the following generally yields the highest degree of aircraft leveling accuracy?
Spirit levels
What is generally used in the construction of aircraft firewalls
Stainless steel
Which of these numbers indicates the horizontal distance from the manufacturer's datum to the location of a component on an aircraft?
Station number
The type of stress that can cause an object to become distorted or change its shape is
Strain
An aircraft encountering severe turbulence in flight should undergo a
Structural inspection before its next operation
You must weigh an aircraft with full fuel tanks in order to document its current CG point. After the total weight has been determined, what must be done?
Subtract the weight of useable fuel
In order to replace a critical component of an older aircraft with a modern component of superior quality, which is the minimum required?
Supplemental Type Certificate
Which statement is true regarding the variety of symbols utilized on the identifying color-code bands currently used on aircraft plumbing lines?
Symbols are always black on a white background regardless of line content
What FAA-approved document gives the leveling means to be used when weighing an aircraft?
TCDS
Which of the following are commonly used nondestructive testing methods on composite structures?
Tap test, Ultrasonic, and Radiographic.
Which statement concerning heat and/or temperature is true?
Temp is a measure of the kinetic energy of the molecules of any substance.
___ is the type of stress that tries to pull the object apart
Tension
A Technical Standard Order (TSO) is issued by whom?
The FAA administrator
If during a scheduled inspection, a defect was found which makes the aircraft unairworthy; to whom must this defect be reported
The aircraft owner
Where would one find information related to the current status of life limited parts on an aircraft?
The aircrafts permanent record
Considering an incident in which an AMT falls off a poorly maintained ladder; which of the following would be considered the latent error?
The broken ladder should have been previously replaced
On of the most common aircraft cables is a 7x19. What does the "7x19" indicate?
The cable is made up of 7 strands of wire, which contains 19 wires in each strand
What happens to the current in a voltage step-up transformer with a ratio of 1 to 4?
The current is stepped down by a 1 to 4 ratio
Nickel-cadmium batteries which are stored for a long period of time, will show a low liquid level because
The electrolyte becomes absorbed into the plates
What do flowcharts illustrate?
The flow of events in a particular sequence
Which of the following scenarios is an example of centripetal force?
The forces on turbine engine shaft as it works to hold onto attached compressor blades
During starting of a turbojet engine powerplant using a compressed air starter, a hot start occurrence was recorded. what happened? -pneumatic starter disengaged too early -the powerplant was preheated before starting -the fuel/air mixture was excessively rich
The fuel air mixture was excessively rich
What is meant by the term "residual fuel"?
The fuel remaining in the tanks, lines, and engine after draining
Which of the following can be identified by the letters and numbers printed on aircraft hydraulic hose?
The hose size
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 degrees F
An increase in the speed at which and airfoil passes through the air increases lift because
The increased speed of the airflow creates a greater pressure differential between the upper and lower surfaces
Selecting the O-ring most compatible with the type of fluid being sealed should be done with reference to
The labeling on the package
Newtons third law of motion is often called
The law of action and reaction
The simplest machine and probably the most familiar is
The lever.
What determines whether the value of a moment is preceded by a plus or minus sign in aircraft weight and balance?
The location of the weight in reference to the datum
A part which is being prepared for dye penetrant inspection should be cleaned with
The prescribed cleaning solvent
If a thermal protector switch activates to prevent overheating damage to an electric motor, once the motor has cooled;
The motor will reset by itself.
Which system provides the most accuracy in measuring drill bit diameter?
The numbering system; 1-80
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.
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
Which statements is acceptable when using a sketch for making a part?
The sketch must show all information to manufacture the part
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. (dead battery = more draw)
A person should approach or leave a helicopter in the pilots field of vision whenever the engine is running in order to avoid -the main rotor -the tail rotor -blowing dust or debris
The tail rotor
What is meant by a metals critical temperature range
The temp at which carbon particles dissolve in the steel
What effect, if any, will AvGas mixed with jet fuel have on a turbine engine?
The tetraethyl lead in the gasoline forms deposits on the turbine blades
Which statement is correct about parallel circuits?
The total currents is equal to the sum of all the currents through the individual branches of the circuit
The locking feature of the nylon type locknut is obtained by?
The use of an unthreaded nylon locking insert
How long are AD compliance records to be kept?
They shall be retained and transferred with the aircraft when it is sold
Which of the following is a purpose of the binary system?
To determine whether a switch is ON or OFF
Why is steel tempered after being hardened?
To relieve its internal stresses and reduce brittleness
At which speed does the airplane experience stability problems?
Transonic
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, and sphere.
The term that best describes the approach of the boundary layer to the center of the wing that begins to lose speed due to skin friction and becomes thicker and turbulent is?
Turbulent layer
After making a 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 for thew owner and one for the FAA
Which file type will provide the smoothest cut and finest finish?
Vixen file
A typical application for zener diodes is as
Voltage regulators
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
How may magnesium engine parts be cleaned?
Wash with a commercial solvent, decarbonize, and scrape or grit blast.
Which statement is true regarding helicopter weight and balance?
Weight and balance procedures for airplanes generally also apply to helicopters
Which of the following problems can be solved by using the Pythagorean theorem?
What is the height above the ground of an aircrafts vertical stabilizer?
Which of the following is not true regarding the four forces of flight?
When an airplane is climbing, it has more weight than lift
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 US by a US air carrier.
When is a mechanic responsible for checking AD compliance?
When performing an inspection required under part 91, 125, 135
During inspection of a NiCad battery, at what point should the water level be checked and refilled if necessary?
When the battery is at a fully charged state.
Which of the following logic gates in (#537) will provide an active high output only when all inputs are different?
XOR
Regarding the use of respirators when working with composite material; which is the best indication that the mask's filters need to be replaced?
You can smell resin with the mask on
Which of the following is a requirement to continue to hold an Inspection Authorization certificate?
You must have a fixed base of operations
A person working under the supervision of a certified mechanic with an airframe and powerplant rating is not authorized to perform
a 100 hour inspection
Which requires the most electrical power?
a 1/5 hp, 24v motor which is 75% efficient
When towing a large aircraft, when crossing a runway or taxiway, -a person should be in the cockpit to watch for obstructions -persons should be stationed at the nose, each wingtip, and the empennage -a person should be in the cockpit to operate the brakes
a person should be on the cockpit to operate the brakes
In performing a dye penetrant inspection, the developer
acts as a blotter to produce a visible indication
When quenching a heated piece of steel, the proper procedure is to
agitate the part vigorously as it is placed in the quenching solution
Which of the following are authorized to sign a return to service document following maintenance on an aircraft? -A&P -Holder of an Inspection Authorization -The aircraft manufacturer
all 3
When computing weight and balance, an airplane is considered to be in balance when?
all moment arms of the plane fall within CG range
The advantages of MS28782 Teflon backup rings include:
all of the above
Working in high temperature environments can cause?
all of the above 1. The body to overheat 2. An increase in perspiration 3. An increased heart rate
Galvanic corrosion is most likely to be most rapid and severe when the surface area of the
anodic metal is smaller than the surface area of the cathodic metal
When starting a turbofan engine with the aircrafts onboard APU at what minimum rpm should the APU be turning in order to successfully start the engine? -75% max rpm -100% max rpm -any rpm equal to or greater than the engines self-sustain speed
any rpm equal to or greater than the engines self-sustain speed
A scratch or nick in aluminum tubing can be repaired, provided it does not
appear in the heel of the bend
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 water rinse
The 100 hour inspection required by the FARs for certain aircraft being operated for hire may be performed by
appropriately rated mechanics and approved by them for return to service.
FAA certified mechanics may
approve for return to service a minor alteration they have performed appropriate to the rating(s) they hold.
When joining and torquing flared tubes and fittings
assure the connection is clean and dry
A 14ohm 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
The working voltage of a capacitor in an AC circuit should be
at least 50% greater than the highest applied voltage
Ferrous oxide corrosion is typically formed by
atmospheric humidity
Which type of flight control tabs move in the opposite direction of the control surface on which it is attached?
balance tabs
If R2 sticks in the up position, the light will (#535)
be on full bright.
Nickel cadmium battery cases and drain surfaces, which have been affected by electrolyte, should be neutralized with a solution of
boric acid solution
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 are true
Which statements is true? -Bonded clamps are used to support when installing metal tubing. -Unbonded clamps are used to support when installing wiring.
both statements are true
How can the state-of-charge of a nickel-cadmium battery be determined?
by a measured discharge
Instrument repairs may be performed
by an FAA-approved instrument repair station.
Hydraulic tubing, which is damaged in a localized area to such an extent that repair is necessary, may be repaired
by cutting out the damaged area and utilizing a swaged tube fitting to join the tube ends
Aircraft nuts are made of stainless steel, anodized 2024T aluminum alloy, or
cadmium plated carbon steel
If an open occurs at R1, the light (#535)
cannot be turned off
Case hardening may be found in the form of
carburizing, nitriding, or cyaniding
A clevis bolt used with a fork-end cable terminal and is secured with a
castellated shear nut tightened with no strain imposed and safetyed with a cotter pin
If a specified tool or part is not available to complete an assigned task, and no equivalent tools or parts are authorized, you should
cease work until the actual tool or part can be obtained
If a radial engine has been shut down for more than 30 minutes, the propeller should be rotated through at least to resolutions to -check for leaks -check for hydraulic lock -prime the engine
check for hydraulic lock
Corrosion problems downstream of engine exhaust areas is caused by
chemical makeup of exhaust gasses
When an anodized surface coating is damaged in service, it can be partially restored by
chemical surface treatment
referring to figure 12-12, the no.7 wire is used to
complete the PUSH-TO-TEST circuit
When inspecting an aircraft you suspect an unapproved part has been installed at a prior time, you should
contact your supervisor
Generally, when an induction fire occurs during starting of a reciprocating engine the first course of action should be -direct carbon dioxide into the air intake -continue cranking -close the throttle
continue cranking
A certain amount of slack must be left in a flexible hose during installation because, when under pressure, it
contracts in length, and expands in diameter
What information is generally contained in Aircraft Specifications or TCDS
control surface movements
Which is the main alloying ingredient in 2024 aluminum?
copper
Honeycomb composite construction for aircraft consist of
core, face sheets, and adhesive
ADs are issued primarily to
correct an unsafe condition
Caustic cleaning products used on aluminum structures have the effect of producing
corrosion
How is a flooded engine, equipped with a float-type carburetor, cleared of excessive fuel? -crank engine, mixture idle cutoff, ignition off, throttle wide open -turn off fuel and ignition, discontinue starting attempt until fuel has been cleared -crank engine, mixture idle cutoff, ignition on, throttle wide open
crank engine, mixture idle cutoff, ignition OFF, throttle wide open
When accomplishing loading computations for a small aircraft, necessary information obtained from the weight and balance records would include
current empty weight and empty weight CG
What is the advantage of using a fine tooth saw instead of a tube cutter when cutting rigid tubing?
decreases work hardening of the tube material
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
The end-of-charge voltage of a 19-cell nickel-cadmium battery, measured while still on charge
depends on its temperature and the method used for chaerging
Which of the following are commonly used as rectifiers in electrical circuits
diodes
A schematic drawing of a hydraulic system would indicate the
direction of fluid flow through a system.
Which is NOT considered an advantage of double flaring
double flare is recommended for hard metal tubing when cracking may occur
Iron Constantan thermocouples function primarily by measuring the
electrical conductivity of a metal as it changes temperature
A fire extinguisher marked with a white C in a blue circle is best suited for
electrical fires
Fayed surfaces cause concern in chemical cleaning because of the danger of
entrapping corrosive materials
When different rated capacitors are connected in parallel in a circuit, the total capacitance is
equal to the sum of all the 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)
equal to the sum of the individual inductances
A cabin entry light of 10 watts and a dome light of 20 watts are connected in parallel to a 30v source. if the voltage across the 10-watt light is measured, it will be
equal to the voltage across the 20w light.
An aircraft equipped with an Air Traffic Control transponder must have that transponder checked
every 24 calendar months
When a discrepancy list is provided to an aircraft owner or operator after an inspection is completed, it says in effect that?
except for these discrepancies, the item inspected is airworthy
The lifting and flaking of the metal at the surface due to delamination of grain boundaries caused by the pressure corrosion residual product buildup is called?
exfoliation
The drawings often used in illustrated parts catalogs/ manuals are
exploded view
Never use co2 type fire extinguishers on burning metal because? -toxic fumes -can cause explosive conditions in the metal -is generally ineffective
explosive conditions
The principle drawback of Halon 104, 1001, and 1202 type fire extinguishers is that they: -must be stored in high pressure cylinders -are extremely toxic -are ineffective against electrical fires
extremely toxic
The FAA mandates the same weight and balance requirements for weight-shift control aircraft and powered parachutes as it does for certified airplanes and helicopters. (true or false)
false, the regulations are not the same
For how long must records of required scheduled inspections performed on an aircraft be kept?
for 1 year
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
forward CG limit
Which piece of information would NOT be found in a type certificate data sheet?
frequency and type of inspections required for the aircraft
An aircraft's LEMAC and TEMAC are defined in terms of distance
from the datum
Which of the following is true regarding the privileges of an A&P mechanic
he/she may perform minor repairs and approve the work for return to service
Which of the below is the product of electrical resistance?
heat
The core material of Alclad 2024-T4 is
heat-treated aluminum alloy, and the surface material is commercially pure aluminum.
The testing medium that is generally used in magnetic particle inspection utilizes a ferromagnetic material that has
high permeability and low retentivity
An overly rich mixture when starting a turbine engine will cause a
hot start
The term "cold flow" is generally associated with
impressions left in natural or synthetic rubber hose material
To obtain useful weight data for purposes of determining the CG, it is necessary that an aircraft be weighed
in a level flight attitude
The maximum weight as used in weight and balance control of a given aircraft can normally be found
in the Aircraft Specification or Type Data Sheets
The purpose of an aircraft wing dihedral is to
increase stability in the lateral axis
The basis for transformer operation in the use of alternating current is mutual
inductance
An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?
inductance and frequency
Transfer of electricity from one circuit to another without the aid of electrical connections
induction
Civilian Aviation Regulations (CARs) are referred to when
inspecting or repairing aircraft which enteredservice prior to the 1960s
When dividing fractions, it is best to
invert the second fraction and multiply the resulting numbers
When tying down a seaplane in strong winds, the practice of flooding the floats -is acceptable -is unacceptable -should only be done on the anticipated upwind float
is acceptable
When an aircraft is sold domestically, the Airworthiness Certificate
is transferred with the aircraft at the time of sale
When calculating power in a reactive or inductive AC circuit, the true power is
less than the apparent power
Referring to the equation, when more than two inductors of different inductances are connected in parallel in a circuit, the total inductance is [Lt = 1/(1/L1+1/L2+1/L3...)]
less than the inductance of the lowest rated inductor
For how long must a part 145 repair station keep records of maintenance activity?
minimum of 2 years
The replacement of fabric on fabric-covered parts such as wings, fuselaghes, stabilaizers, or control surfaces is cosidred to be a
major repair even though no other alteration or repair is performed
Which term means .001 ampere
milliampere
Regarding the statements below: 1. Certified mechanics with an airframe rating may perform a minor repair to an airspeed indicator providing they have the necessary tools and equipment available. 2. Certificated mechanics with a powerplant rating may perform major repair to a propeller providing they have the necessary tools an equipment available.
neither 1 nor 2 is true
Which statements are true? 1. Private aircraft are required by regulations to be weighed periodically. 2. Private aircraft are required to be weighed after making an alteration
neither are true
Most often, problems associated with a team's "normal way of doing things" can be best identified by the
newest member of the team
When tying down an aircraft outside, whenever possible it should be positioned with the -nose into the wind -tail into the wind -anticipated upwind aileron into the wind and positioned downwards
nose into the wind
In a functional and operating circuit, the logic gate depicted in (#537) will be 0 when
one or more inputs are 0
If the cross-sectional area of a given conductor is increased to four times its original value, and the length and temperature remain constant, the resistance of the conductor will be
one-fourth its original value
Regarding the statements below: 1.The FARs require approval after compliance with the data of a supplimental type certificate 2.An installation of an item manufactured in accordance with the TSO system requires no further approval for installation in a particular aircraft
only 1 is true
When is an AN Clevis bolt used on an airplane?
only for shear load applications
Metal tubing fluid lines are sized by wall thickness and
outside diameter in 1/16 inch increments
Each of the following must be displayed on a fireproof data plate attached to all US aircraft except
owners contact information
The pattern for an inclusion is a magnetic particle buildup forming
parallel lines
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
rearward CG limit
Diodes are used in electrical power circuits primarily as
rectifiers
Which of the following is not a kind of friction?
resisting friction
Which of the following is an example of a major repair performed on an airframe? -upkeep and preservation... -restoration of the airframe to a condition for safe operation after damage or deterioration -simple or minor preservation...
restoration of the airframe
A Chromic Acid/ Sulfuric Acid wash is best used to
restore a protective oxide coating on an aluminum surface
According to 14CFR section 65.19, should an applicant fail to receive a passing grade on a knowledge exam, he/she may:
retake the exam anytime following further instruction
When taxing or towing an aircraft, a flashing white light from the control tower means
return to your starting point
When checking an item with the magnetic particle inspection method, circular and longitudinal magnetization should be used to
reveal all possible defects
The concept that a system should continue to function even if one of its components fails describes the practice of
safety engineering
The rotor system on a helicopter that has blades which are rigidly attached to the hub with the blades and hub able to teeter like a seesaw is the
semi-rigid rotor system
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
Flexible fluid lines must be installed with?
slack equal to approx 5% of their length
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 approx 1/4" in diameter, the technician 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
Which is classified as a major repair?
splicing of skin sheets
Which of these materials is the most cathodic?
stainless steel
Which of the following is a typical cause of a hung start on a turbofan engine? -malfunction in ignition system -starter cutting off too soon -excessively rich mixture
starter cutting off too soon
What is a typical use for a ground support air cart
starting engines
When we think of aviation safety in a contemporary way, human error is the
starting point
A certificated mechanic without an inspection authorization who signs the appropriate block on FAA Form 337 is doing what?
stating that he/she is the person who has performed the work
If a standard AN flared fitting is colored black, what material is in made of?
steel
Corrosion should be removed from magnesium parts with a
stiff, hog-bristle brush
Under 14 CFR, what is the maximum penalty for falsification, alteration, or fraudulent reproduction of certificates, logbooks, reports, and records?
suspension or revocation of any certificate held
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
When starting and ground operating an aircrafts engine, the aircraft should be positioned to head into the wind primarily -to aid in engine cooling -to help cancel out engine torque effect -achieving maximum airflow into the induction system
to aid in engine cooling
A helicoil insert is used
to replace damaged threads in aircraft structures
To determine CG, which of the following formulas is used?
total moment/ total weight
In order to reconstruct lost or destroyed aircraft mainenance records, what is it necessary to establish?
total time in service of the aircraft
When a charging current is applied to a nickel cadmium battery, the cells emit gas
toward the end of the charging cycle
An 1100 aluminum alloy rivet is a soft rivet not suitable for high strength applications
true
An AN-73 bolt has the head drilled for insertion of safety wire. (true or false)
true
Which requires the most electrical power during operation?
two lights requiring 3-amperes each in a 24v parallel system.
Where do you look to determine the operating CG range when calculating a new aircraft weight and balance document?
type certificate data sheet
Which is the best method to detect intergranular corrosion?
ultrasonic inspection
Which of these nondestructive testing methods is suitable for the inspection of most metals, plastics, and ceramics for surface and subsurface defects?
ultrasonic inspection
Unless otherwise specified or required, aircraft bolts should be installed so the bolt head is facing
upward, or in a forward direction
A behavior or safety net to reduce errors caused by distractions is to
use a detailed checklist
Minimizing corrosion related problems with piano hinges attached to control surfaces are best accomplished by
use of water displacing lubricants when servicing
A gas or fluid line marked with the letters PHDAN is
used to carry physically dangerous materials
What is the normal duration of a mechanic certificate with airframe and/or powerplant ratings?
valid until surrendered, suspended, or revoked
The rudder is a type of flight control or directional control for the
vertical axis
A special delivery needs to be made for a large painting. The painting measures 9ft tall by 9ft wide. It is being delivered by a cargo plane that has a door opening of 6-1/2 feet tall 8-1/2 feet wide. will it fit?
yes, diagonally
