General written
8009-1 (Refer to Figure 2.) What is the total capacitance of a circuit containing three capacitance in parallel with capacitances of .02 microfarad, .05 microfarad, and .10 microfarad, respectively?
A. .170 µF.
8045-2. If each cell connected in series, equals 2 volts, how would a 12-cell lead acid battery be rated?
A. 24 volts.
8002-2. Electrostatic fields are also known as
A. Dielectric fields.
8057. (Refer to Figure 15.) With the landing gear retracted, the red indicator light will not come on if an open occurs in wire
A. No. 19
8067. (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
A. No. 4.
8062. (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?
A. Three.
8054. Which is correct concerning a parallel circuit?
A. Total resistance will be smaller than the smallest resistor.
8075. In a P-N-P transistor application, the solid state device is turned on when the
A. base is negative with respect to the emitter.
8081. (Refer to Figure 23.) If R₂ sticks in the up position, the light will
A. be on full bright.
8058. (Refer to Figure 15.) The No. 7 wire is used to
A. close the PUSH-TO-TEST circuit.
8009-3. Convert farads to picofarads by:
A. multiplying farads by 10 to the power of 12.
8139-1. In what type of electrical diagram are images of components used instead of conventional electrical symbols?
A pictorial diagram.
8033. .002KV equals
B. 2.0 volts.
Figure 45) What type weld is shown at G A-Lap B-Butt C-Joint
Lap
In the four-digit aluminum index system number 2024, the first digit indicates A-The major alloying element B-The number of major alloying elements used in the metal C-The percent of alloying metal added
The major alloying element
Which statement concerning Bernoulli's principle is true?
The pressure of a fluid decreases at points where the velocity of the fluid increases.
What metal has special short-time heat properties and is used in the construction of aircraft firewalls A-Stainless steel B-Chrome molybdenum alloy steel C-Titanium alloy
Titanium alloy
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
8183 In a balance computation of an aircraft from which an item located aft of the datum was removed, use...
(-) weight X (+) arm (-) moment
8162 What determines whether the value of a moment is preceded by a (+) or (-) sign in aircraft weight and balance?
(1) the result of a weight being added or removed (2) its location relative to the datum
8187 An aircraft with an empty weight of 1,500 lb and EWCG of +28.4 was altered as follows: 1. 2x 12lb seats @ +68.5 removed 2. mods increased 28 lbs @ +73 3. seat&belt 30 lbs installed @ +70.5 4. radio 25 lbs installed @ +85 What is the new empty weight CG?
+30.30
8180 An aircraft with an empty weight of 1,800 lb and empty weight CG of +31.5 was altered as follows: 1. 2x 15lb seats @ +72 removed 2. mods increased 14 lbs @ +76 3. seat&belt 20 lbs installed @ +73.5 4. radio 30 lbs intalled @ +30 What is the new empty weight CG?
+31.61
8174 An aircraft with an empty weight of 2,100 lbs and an empty weight CG +32.5 was altered as followed: 1) 2x 18lb seats @ +73 removed 2) mods @+77 increase 17lbs 3) seat&belt 25lbs installed @ +74.5 4) radio 35lbs installed @ +95 Find new empty weight CG
+33.68
Solve the equation. [(4 x -3)+(-9 x 2)] ÷ 2 =
-15
(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 A-.00001 B-.001 C-.0001
.0001
8133. 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 53.) Solve the equation.
.0419.
Figure 49) The measurement reading on the micrometer is A-.2758 B-.2702 C-.2792
.2792
Figure 48) What does the micrometer read A-.2974 B-.3004 C-.3108
.3004
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 square root of 124.9924.
1,118 x 10 to the negative second power.
name at least one cause of fillliform corrosion
1. improper or incomplete curing of a wish primer prior to painting, 2. failure to completely wash off acidic surface contamination
8168 The empty weight of an airplane is determined by...
1. subtract tare weight from the scale reading 2. add weight of each weighing point
give at least three examples of the factors that cause or influence corrosion
1. the environmental conditions, 2. the presence of dissimilar metals, 3. the type of metal, 4. the presence of electrolytes and/or contaminants, 5. the condition of protective coatings
(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.
Which of the following is the square root of (-1776)/(-2) - 632?
16.
Express 7/8 as a percent.
87.5 percent
What can be used to repair the anodized surface of an aluminum alloy part
A chemical conversion coating such as Alodine
What type of fuel is Jet-A fuel
A fuel with a heavy kerosine base, a flash point of 110 through 150°F, a freezing point of -40°F, and a heat energy content of 18,600 Btu/pound
In magnetic particle inspection, a flaw that is perpendicular to the magnetic field flux lines generally causes A-A large disruption in the magnetic field B-A minimal disruption In the magnetic field C-No disruption In the magnetic field
A large disruption in the magnetic field
To detect a minute crack using dye penetrant inspection usually requires A-That the developer be applied to a flat surface B-A longer-than-normal penetrating time C-The surface to be highly polished
A longer-than-normal penetrating time
Flexible lines must be installed with....
A slack of 5 to 8 percent of the length
What is used to neutralize the electrolyte from a lead-acid battery that has been spilled on an aircraft structure
A solution of bicarbonate of soda and water
What is used to neutralize the electrolyte from a nickel-cadmium battery that has been spilled on an aircraft structure
A solution of boric acid and water, or vinegar
What type of device is used to remove surface corrosion from a piece of magnesium alloy
A stiff hog-bristle brush
8085. 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
A. 0.52 ohms.
8087. Which statement regarding the hydrometer reading of a lead-acid battery electrolyte is true?
A. The hydrometer reading does not require a temperature correction if the electrolyte temperature is 80°F.
8096-1. The electrolyte of a nickel-cadmium battery is highest when the battery is
A. in a fully charged condition.
8094. The presence of any small amount of potassium carbonate deposits on the top of nickel-cadmium battery cells in service is an indication of
A. normal operation.
8092. The purpose of providing a space underneath the plates in a lead acid batter's cell container is to
A. prevent sediment buildup from contacting the plates and causing a short circuit.
8102. When a charging current is applied to a nickel-cadmium battery, the cells emit gas
A. toward the end of the charging cycle.
When the specific torque value for nuts is not given, where can the recommended torque value be found A-AC 43.13-1B B- Technical standard order C-AC 43.13-2A
AC 43.13-1B
A bolt with a single raised dash on the head is classified as an A-AN corrosion-resistant steel bolt B-NAS standard aircraft bolt C-NAS close tolerance bolt
AN corrosion resistant steel bolt
What is used to keep corrosion from forming on structural aluminum alloy
An oxide coating or aluminum cladding
Where is dissimilar metal corrosion most likely to occur on an aircraft
Anywhere different types of metal come in contact with each other, especially where moisture is present
A scratch or nick in aluminum tubing can be repaired provided it does not....
Appear in the heel of a bend.
If a flared tube coupling nut is overtightened, where is the tube most likely to be weakened/damaged?
At the sleeve and flare junction.
8099. How can the state-of-charge of a nickel-cadmium battery be determined?
B. By a measured discharge.
8100. What may result if water is added to a nickel-cadmium battery when it is not fully charged?
B. Excessive spewing is likely to occur during the charging cycle.
8089. What determines the amount of current which will flow through a battery while it is being charged by a constant voltage source?
B. The state-of-charge of the battery.
8095-1. Which of the following best describes the operating principal in a nickel-cadmium battery installed in an aircraft?
B. To completely charge a nickel-cadmium battery, some gassing must take place; thus, some water will be used.
8037. What unit is used to express electrical power?
B. Watts.
8101. In nickel-cadmium batteries, a rise in cell temperature
B. causes a decrease in internal resistance.
8096. The electrolyte of a nickel-cadmium battery is the lowest when the battery is
B. in a discharged condition.
8088. A fully charged lead-acid battery will not freeze until extremely low temperatures are reached because
B. most of the acid is in the solution.
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....
Back the nut off and align it to the nearest hole.
What is the color of an AN steel flared-tube fitting?
Black
8009. (Refer to Figure 2.) What is the total capacitance of a certain circuit containing three capacitors with capacitances of .02 microfarad, .05 microfarad, and .10 microfarad, respectively?
C. .0125 µF.
8042. 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?
C. 0.93 amperes.
8090. 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 connect 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.
C. 1 and 2.
8050. (Refer to Figure 14.) The total resistance of the circuit is
C. 17 ohms.
8023. (Refer to Figure 4.) How much power is being furnished to the circuit?
C. 2,645 watts. E = RI² = 5 x 23² = 2645
8046. (Refer to Figure 12.) Find the total resistance of the circuit.
C. 21.2 ohms.
8021. 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?
C. 24 volts.
8045-1. 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?
C. 24 volts.
8045. (Refer to Figure 11.) Find the voltage across the 8-ohm resistor.
C. 24 volts.
8018. 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?
C. 25.23 amperes. Find Rt: 3(1/6) + 2(1/5) = 9/10 Rt = 10/9 I = E/R = 28 x 9/10 = 25.2
8016. How much power must a 24-volt generator furnish to 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 anti collision light 5 amp (Note: 1 horsepower = 746 watts)
C. 450 watts. 746 ÷ 5 = 149.5 3 x 20 = 60 24 x 5 = 120 24 x 5 = 120 Total = 449.5 ≈ 450
8064. (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.
C. 5, 6, 11, 12, 13, 15, 16.
8019. 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)
C. 994.6 watts.
8086. If electrolyte from a lead-acid battery is spilled in the battery compartment, which procedure should be followed?
C. Apply sodium bicarbonate solution to the affected area followed by a water rinse.
8091. The method used to rapidly charge a nickel-cadmium battery utilizes
C. Constant voltage and vary current.
8095. What is the likely result of servicing and charging nickel-cadmium and lead acid batteries together in the same service area?
C. Contamination of both types of batteries.
8037-1. What is the basic unit of electrical quantity?
C. Coulomb.
8093. Which condition is an indication of improperly torqued cell link connections of a nickel-cadmium battery?
C. Heat or burn marks on the hardware.
8069. (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?
C. Left gear up and right gear down.
8030. Which term means .001 ampere?
C. Milliampere.
8020-1. Which effect does not apply to the movement of electrons flowing in a conductor?
C. Static energy.
8060.(Refer to Figure 16) What will be the effect if the PCO relay fails to operate when the left-hand tank is selected?
C. The fuel pressure crossfeed valve open light will not illuminate
8072. When referring to an electrical circuit diagram, what point is considered to be at zero voltage?
C. The ground reference.
8084-1. Which of the following logic gates will provide an active hight out only when all inputs are different?
C. XOR (Exclusive OR)
8029-1. What will a voltmeter read if properly connected across a closed switch in a circuit with electrical power on?
C. Zero voltage.
8001. The working voltage of a capacitor in an AC circuit should be
C. at least 50 percent greater than the highest applied voltage.
8097. The end-of-charge voltage of a 19 cell nickel-cadmium battery, measured while still on charge,
C. depends upon its temperature and the method used for charging.
8098. Nickel-cadmium batteries which are stored for a long period of time will show a low liquid level because
C. electrolyte becomes absorbed into the plates.
8073. (Refer to Figure 20.) Troubleshooting an open circuit with a voltmeter as shown in this circuit will
C. permit the battery voltage to appear on the voltmeter.
8008. The amount of electricity a capacitor can store is directly proportional to the
C. plate area and inversely proportional to the distance between the plates.
8055. The voltage drop in a circuit of known resistance is dependent on
C. the amperage of the circuit.
8077. Typical application for zener diodes is as
C. voltage regulators.
8083. (Refer to Figure 25.) In functional and operating circuit, the depicted logic gate's output will be 0
C. when one or more inputs are 0.
The reheating of a heat treated metal, such as with a welding torch A-Has little or no effect on a metals heat treated characteristics B-Has a cumulative enhancement effect on the original heat treatment C-Can significantly alter a metals properties in the reheated area
Can significantly alter a metals properties in the reheated area
What type of fire extinguisher is best suited for extinguishing an induction fire in a reciprocating engine
Carbon dioxide
Which heat-treating operation would be performed when the sure face of the metal is changed chemically by introducing a high carbide. Or nitride content A-Tempering B-Normalizing C-Case hardening
Case hardening
Which heat-treating process of metal produces a hard, wear-resistant surface over a strong, tough core A-Case hardening B-Annealing C-Tempering
Case hardening
8121. What material symbol is frequently used in drawings to represent all metals?
Cast iron.
Which tool is used to find the center if a shaft or other cylindrical work A-Combination set B-Dial indicator C-Micrometer caliper
Combination set
Circular magnetization of a part can be used to detect which defects A-Defects parallel to the long axis of the part B-Defects perpendicular to the long axis of the part C-Defects perpendicular to the concentric circles of magnetic force within the part
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 A-Defects perpendicular to the long axis of the part B-Defects parallel to the long axis of the part C-Defects parallel to the concentric circles of magnetic force within the part
Defects perpendicular to the long axis of the part
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 A-Eddy current inspection B-Ultrasonic inspection C-Magnetic particle inspection
Eddy current inspection
Generally speaking, bolt rio lengths should be A-Equal to the thickness of the material which is fastened together, plus approximately one diameter B-Equal to the thickness of the material which is fastened together C-One and one half times the thickness of the material which is fastened together
Equal to the thickness of the material which is fastened together
8121-1. What is used to indicate that a surface must be machine finished?
Finished marks.
Which statement is true regarding flattening of tubing in bends?
Flattening by not more than 25 percent of the original diameter is permissible
Magnetic particle inspection is used primarily to detect A-Distortion B-Deep subsurface flaws C-Flaws on or near the surface
Flaw on or near the surface
What tools is generally used to calibrate a micrometer or check it's accuracy A-Gauge block B-Dial indicator C-Machinist scale
Gauge block
The best tool to use when cutting aluminum tubing, or any tubing of moderately soft metal is a....
Hand operated wheel-type tubing cutter
A 3/8 inch aircraft high pressure flexible hose as compared to 3/8 inch metal tubing used in the same system will....
Have equivalent flow characteristics
The core material of Alclad 2024-T4 is A-Heat-treatment aluminum alloy, and the surface material is commercially pure aluminum B-Commercially pure aluminum, and the surface material is heat-treated aluminum alloy C-Strain-hardened aluminum alloy, and the surface material is commercially pure aluminum
Heat-treatment aluminum alloy, and the surface material is commercially pure aluminum
The term 'cold flow' is generally associated with....
Impressions left in natural or synthetic rubber hose material
Where is fretting corrosion most likely to occur on an aircraft
In a location where there is a slight amount of relative movement between two components, and no way for the corrosive residue to be removed as it forms
Where is stress corrosion most likely to occur on an aircraft
In any metal component that is continually under a tensile stress. The metal around holes in castings that are fitted with pressed-in bushings are susceptible to stress corrosion
Which statement regarding aircraft bolts is correct A-When tightening castellated nuts in drilled bolts, if the cotter pin holes do not line up, it is permissible to over tighthen the nut to permit alignment of the next slot with the cotter pin hole B-In general, bolt grip lengths should equal the material thickness C-Alloy steel bolts smaller than 1/4-inch diameter should not be used in primary structure
In general, bolt grip lengths should equal the material thickness
Why should an aircraft maintenance technician be familiar with weld nomenclature A-So that accurate visual (pictorial) comparisons can be made B-In order to gain familiarity with the welding technique, fuller material, and temperature range used C-In order to compare welds with written (non-pictorial) description standards
In order to gain familiarity with the welding technique, fuller material, and temperature range used
When starting an aircraft engine that is equipped with a float carburetor, in what position should the carburetor heat control be placed
In the "Cold" position
3 types of resistive force in an AC circuit:
Inductive reactance. Capacitive reactance. Resistance.
Flexible hose used in aircraft systems is classified in size according to the....
Inside diameter
What type of corrosion may attack the grain boundaries of aluminum alloys when the heat treatment process has been improperly accomplished A-Concentration cell B-Intergranular C-Fretting
Intergranular
Normalizing is a process of heat treating A-Aluminum alloys only B-Iron-base metals only C-Both aluminum alloys and iron-base metals
Iron-base metals only
What are two functions of tetraethyl lead that is added to aviation gasoline
It increases the critical pressure and temperature of the fuel, and it acts as a lubricant for the valves
Which statement relating to the residual magnetizing inspection method is true A-Subsurface discontinuities are made readily apparent B-It is used in practically all circular and longitudinal magnetizing procedures C-It may be used with steels which have been heat treated for stressed applications
It may be used with steels which have been heat treated for stressed applications
8169-2 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?
It will be in excess of maximum takeoff weight
What is the proper way to extinguish an induction system fire that occurs when starting a reciprocating engine
Keep the engine running and blow the fire out. If this does not work, use a CO2 fire extinguisher directed into the carburetor air inlet
In examining and evaluating a welded joint, a mechanic should be familiar with A-Likely ambient exposure conditions and intended use of the part, along with type of weld and original part material composition B-The welding technique, filler material, and temperature range used C-The parts, proportions, and formation of a weld
Likely ambient exposure conditions and intended use of the part, along with type of weld and original part material composition
What grade of aviation gasoline is dyed blue
Low-lead 100-octane
What tool is generally used to set a divider to an exact dimension A-Machinist scale B-Surface gauge C-Dial indicator
Machinist scale
8103. What type of line is normally used in a mechanical drawing or blueprint to represent an edge or object not visible the 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 A-Eddy current test B-Metallic ring test C-Ultrasonic test
Metallic ring test
What solvent is recommended for removing grease from aircraft fabric prior to doping it
Methyl Ethyl Ketone (MEK) or lacquer thinner
What may be used to check the stem on a poppet type valve for stretch A-Dial indicator B-Micrometer C-Telescoping gauge
Micrometer
What precision measuring tool is used for measuring crankpin and main bearing journals for out-of-round wear A-Dial gauge B-Micrometer caliper C-Depth gauge
Micrometer caliper
Which tool can be used to determine piston pin out-of-round wear A-Telescopic gauge B-Micrometer caliper C-Dial indicator
Micrometer caliper
8145. (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.
8147. (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.
What is meant by a liquid lock in the cylinder of an aircraft engine, and how is one cleared
Oil accumulates in the cylinders below the center line of the engine and prevents the piston moving to the top of its stroke. To clear a liquid lock, remove one of the spark plugs and turn the engine crankshaft until all of the oil is forced out of the cylinder
8108. Which statement is true regarding an orthographic projection?
One-view, two-view, and three-view drawings are the most common.
Where is an AN Clevis bolt used in an airplane A-For tension and shear load conditions B-Where external tension loads are applied C-Only for shear load applications
Only for shear load applications
The pattern for an inclusion is a magnetic particle buildup forming A-A fernlike pattern B-A single line C-Parallel lines
Parallel lines
The primary purpose of providing suitable bends in fluid and pneumatic metal tubing runs is to....
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....
Providing bends in the tubing
One way a part may be demagnetized after magnetic particle inspection is by A-Subjecting the part to Hugh voltage, low amperage AC B-Slowly moving the part out of an AC magnetic field of sufficient strength C-Slowly moving the part into an AC magnetic field of sufficient strength
Slowly moving the part out of an AC magnetic field of sufficient strength
If it is necessary to accurately measure the diameter of a joke approximately 1/4 inch in diameter, the mechanic should use a A-Telescoping gauge and determine the size ....... B-0- to 1- inch inside micrometer and read the.... C-Small-hole gauge and determine the size of the hole by taking a micrometer reading of the call end of the gauge
Small-hole gauge and determine the size of the hole by taking micrometer reading of the ball end of the gauge
Which statement is true regarding the variety of symbols utilized on the identifying color-code bands that are currently used on aircraft plumbing lines?
Symbols are always black against a white background regardless of line content.
8156-1 Where do you look to determine the operating CG range when calculating a new aircraft W&B document
TCDS
8159 What FAA-approved document gives the leveling means to be used when weighing an aircraft?
TCDS
What action should a mechanic take while taxiing an aircraft on a runway if the tower shines a flashing red light at him
Taxi the aircraft clear of the runway in use
How can the dimensional inspection of a bearing in a rocker arm be accomplished A-Depth gauge and micrometer B-Thickness gauge and push-fit arbor C-Telescopic gauge and micrometer
Telescopic gauge and micrometer
In a metal tubing installation....
Tension is undesirable because pressurization will cause it to expand and shift.
What must be done if a hung start occurs when starting a turbojet engine
Terminate the starting operation and find the reason the engine would not accelerate as it should
What should be done to a reciprocating engine fuel system if turbine fuel is inadvertently put into the tanks and the engine is run
The entire fuel system must be drained and flushed with gasoline, the engine given a compression check and all of the cylinders given a borescope inspection. The oil must be drained and all of the filters and strainers checked. After the aircraft is properly fueled, the engine must be given a proper run-up and check
8154-1 What is meant by the term "residual fuel" ?
The fuel remaining in the tanks, lines, and engine after draining
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....
The possibility of reducing the flare thickness by wiping or ironing during the tightening process
Which of the following is a main determinant of the dwell time to use when conducting a dye or fluorescent penetrant inspection A-The size and shape of the discontinuities being looked for B-The size and shape of the part being inspected C-The type and/or density of the part material
The size and shape of the discontinuities being looked for
8114. Which statement is applicable when using a sketch for making a part?
The sketch must show all information to manufacture the part.
How is the inside of structural steel tubing protected from corrosion
The tubing is filled with hot linseed oil and then drained
Why is it important that turbine fuel not be mixed with aviation gasoline that is used in an aircraft reciprocating engine
The turbine engine fuel will cause the engine to detonate
8140. Schematic diagrams are best suited for which of the following?
Troubleshooting system malfunction.
Which of these nondestructive testing methods is suitable for the inspection of the most metals, plastics, and ceramics for surface and subsurface defects A-Eddy current inspection B-Magnetic particle inspection C-Ultrasonic inspection
Ultrasonic inspection
If dye penetrant inspection indications are not sharp and clear, the most probable cause is that the part A-Was not correctly degaussed before the developer was applied B-Has no appreciable damage C-Was not thoroughly washed before the developer was applied
Was not thoroughly washed before the developer was applied
8164 Which statement is true regarding helicopter weight and balance? A... B... C... (answer)
Weight and balance procedures for airplanes generally also apply to helicopters.
What two types of indicating mediums are available for magnetic particle inspection A-Iron and ferric oxides B-Wet and dry process materials C-High retentivity and low permeability materials
Wet and dry process materials
what are the two primary factors that may cause development of stress corrosion cracks
a corrosive environment and sustained tensile stress
8166 If the reference datum line is placed at the nose of an airplane rather than at the firewall or some other location aft of the nose..
all measurements arms will be in positive numbers
what are the visible signs of filliform corrosion
blistered paint surfaces or worm or thread like tracks or patterns under the paint
8185-2 When accomplishing loading computations for a small aircraft, necessary information obtained form the W&B records would include...
current empty weight & EWCG
8119. Working drawings may be divided into three classes. They are:
detail drawings, assembly drawings, and installation drawings.
8127. The measurements showing the ideal or "perfect" sizes of parts on drawings are called
dimensions.
8190 When computing the max forward loaded CG of an aircraft, min weights, arms, moments should be used for items of useful load that are located aft of the...
forward CG limit
8110. A line used to show an edge which is not visible is a
hidden line.
8189 If the empty weight CG of an airplane lies within the empty weight CG limits...
it is not necessary to calculate CG extremes
is there any requirement for cleaning an aircraft prior to an annual or 100 hour inspection
it is not only good, common sense, but it is a legal requirement as specified in far part 43, appendix d
8130. Zone numbers on aircraft blueprints are used to
locate parts, sections, and views on large drawings.
8167 Maximum zero fuel weight is the...
maximum permissible weight of a loaded aircraft without fuel (passenger, crew, cargo)
describe the tools that should be used to remove corrosion from anodized aluminum surfaces
nylon scrubber pads such as scotch-brite, bristle brushes, aluminum wool or aluminum wire brushes
under what conditions may automobile gasoline be used in an aircraft engine
only if approved by the FAA usually be the issuance of a supplemental type certificate
8157-1 In the process of weighing an airplane toward obtaining the CG, the arms from the weighing points always extend...
parallel to the centerline of the airplane
under what conditions should a reciprocating engine be pre-oiled
prior to staring a new engine or one that has been preserved for storage this ensures adequate lubrication on initial start up
what procedure should be followed prior to starting a large radial engine to detect and or prevent a hydraulic lock in the cylinders
pull the propeller through by hand for three or four complete revolutions resistance to the prop tuning indicates a possible hydraulic lock in at least one of the cylinders
8185 When making a rearward W&B 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
why should aircraft fabrics and plastics be cleaned only with recommended cleaners
recommended cleaner cause the least amount of deterioration or damage
8172 Improper loading of a helicopter which results in exceeding either the force or aft CG limits i hazardous due to the...
reduction or loss of effective cyclic pitch control
8169-3 The major source of weight change for most aircraft as they age is caused by...
repairs and alterations
what type of cleaning agents should be used to remove grease, oil or fuel from aircraft tires
soap and water
what are some of the more common light duty cleaning agents
soap or detergents and water
what materials are commonly used as heavy duty cleaners
solvents and emulsions
8159-1 Use of which of the following generally yields the highest degree of aircraft leveling accuracy?
spirit levels
8107. 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.
describe the effects of using steel brushes or steel wool to remove corrosion from aluminum surfaces
steel brushes or steel wool must not be used to clean aluminum because steel particles can become embedded in the aluminum and cause corrosion
what is the most generally used knot for tying down small aircraft
the bowline
what are the visible signs of fretting corrosion
the corrosion residue has a dark, smoky appearance and often appears around and streaming back from rivet heads
8170 The useful load of an aircraft is the difference between...
the maximum takeoff weight and basic empty weight
when towing an aircraft should you use the tow vehicle or aircraft brakes to stop the aircraft
the tow vehicle brakes should be used except in an emergency then the aircraft brakes may be used
the marking requirements for oil tank filler openings are specified by f a r 23.1157 what marking are required for a piston engine powered airplane
the work oil and the permissible grades and or types or a reference to the appropriate airplane flight manual for permissible grades and or types
8165 What should be clearly indicated on the aircraft weighing form?
weighing points
Why is it considered good practice to normalize a part after welding A-To relieve internal stresses developed within the base metal B-Increase the hardness of the weld C-To remove the surface scale formed during welding
To relieve internal stresses developed within the base metal
Why is still tempered after being hardened A-To increase it's hardness and ductility B-To increase it's strength and decrease it's internal stresses C-To relieve it's internal stresses and reduce it's brittleness
To relieve it's internal stresses and reduces it's brittleness
Where is filiform corrosion most likely to occur on an aircraft
Under a dense coating of topcoat enamel such as polyurethane. Filiform corrosion is caused by improperly cured primer
Convert the binary number 1111 to decimal form.
15.
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 A-1,2,3 B-1,2,4,5 C-3
3
(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.
8182 If a 40 lb generator applies +1400 in-lb to a reference axis, the generator is located...
+35 from the axis (1400/40=35)
8191 Find the EWCG location for the following tricycle-gear aircraft. 1) Each main wheel gear weighs 757 lb 2) nose wheel weighs 22 lb, 3) distance between nose wheel & main wheel is 87.5 in 4) nose wheel location is +9.875in from datum 5) with 1 gallon of hydraulic fluid at -21.0 inches included in weight scale
+96.11
Find the value of 10 raised to the negative sixth power.
0.000001.
8123. (Refer to Figure 34.) What is the dimension of the chamfer?
0.0625 x 45°
Figure 46) The measurement reading on the illustrated micrometer is A-0.2851 B-0.2911 C-0.2901
0.2851
8124. (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.
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
Convert 7 to binary form.
0111.
8125. (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.
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.
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 A-1,2 B-1,3 C-2,3
1,2
Which of the following defects are not acceptable for metal lines 1.Cracked flare 2.Seams 3.Dents in the heels 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 A-1,2,3,4, and 5 B-1,2, and 3 C-1,2,3, and 5
1,2,3, and 5
Which of the following methods may be suitable to use to detect cracks open to the surface In aluminum forgings and casting 1.Dye penetrant inspection 2.Magnetic particle inspection 3.Metallic ring (coin tap) inspection 4.Eddy current inspection 5.Ultrasonic inspection 6.Visual inspection A-1,4,5,6 B-1,2,4,5,6 C-1,2,3,4,5,6
1,4,5,6
(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.
8111. (Refer to Figure 30.) Identify the bottom view of the object.
1.
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.
1. AN fittings have an identifying shoulder between the end of the threads and the flare cone.
Which of the following hose materials are compatible with phosphate-ester base hydraulic fluids? 1. Butyl. 2. Teflon. 3. Buna-N. 4. Neoprene.
1. Butyl 2. Teflon
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
1. During installation, MS flareless fittings are normally tightened by turning the nut a specified amount, rather than being torqued.
provide at least four examples of procedures used to prevent corrosion
1. cleaning, 2. lubrication, 3. treatment, 4. sealing, 5.inspection, 6. installing protective covers, 7. keeping drain holes free and clear
8155 The useful load of an aircraft consists of the ...
1. crew 2. usable fuel 3. passengers 4. cargo
name at least three forms of corrosion
1. surface, 2. intergranular, 3.filliform, 4. dissimilar metal (or galvanic), 5. oxidation, 6.pitting, 7.stress, 8.fretting
Select the decimal which is most nearly equal to 77/64.
1.2031.
Figure 47) What is the measurement reading on the vernier caliper scale A-1.411 inches B-1.436 inches C-1.700 inches
1.436 inches
8181 An aircraft had an empty weight of 2,889 lb with a moment of 101,673.78 before several alterations were made. The alterations included 1. removing 2x 15lb seats @ +71 2. installed cabinet 97 lb @ +71 3. installed seat&belt 20 lbs @ +71 4. installed radio 30 lbs @ +94 The alterations caused the new EWCG to move...
1.62 in aft of the original EWCG
Which alternative answer is equal to 16,300?
1.63 x 10 to the fourth power.
list a least five examples of areas in an aircraft that are prone to corrosion
1.battery compartments, 2. exhaust trail areas, 3. bilge areas, 4. vent areas, 5. landing gear and wheel wells, 6. fuel tanks, 7. wing flap recesses, 8. around and below galleys and lavatories, 9. piano hinges, 10. any area that can trap water.
Select the fractional equivalent for a 0.0625 inch thick sheet of aluminum.
1/16.
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 A-1/2 inch B-1 inch C-1/4 inch
1/2 inch
8129. (Refer to Figure 36.) The diameter of the holes in the finished object is
1/2 inch.
Select the fraction which is equal to 0.0250.
1/40.
Scratches or nicks on the straight portion of aluminum alloy tubing may be repaired if they are no deeper than....
10 percent of the wall thickness
(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.
Solve the equation. 1/2 (-30 + 34) 5
10.
(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
8188 The following alteration was performed on an aircraft. A model B engine weighing 175 lb was replaced by a model D engine weighing 185 lb at a -62.00 inch station. The aircraft weight and balance records show the previous EW to be 998 lb and EWCG of 13.48 inches. What is the new EWCG?
12.73 inches
8150. (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.
(Refer to Figure 58.) Solve the equation.
14.002.
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.
8186 When an empty aircraft is weighed, the combined net weight at the main gears is 3,540 lb with an arm of 195.5 in . At the nose gear, the net weight is 2,322 lb with an arm of 83.5 in. The datum line is forward of the nose of the aircraft. What is the empty CG of the aircraft.
151.1
8178 As weighed, the total empty weight of an aircraft is 5,862 lbs with a moment of 885,957. However, when the aircraft was weighed, 20 lbs of potable water were on board at +84, and 23 lbs of hydraulic fluid are in a tank located at +101. What is the EWCG of the aircraft?
151.365
What is the speed ratio of an input gear with 36 teeth meshed to a gear with 20 teeth?
1:1.8.
Figure 44) Select the illustration which depicts a cold weld A-3 B-2 C-4
2
8143. (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.
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 plastic A-2,3,3 B-1,2,3 C-2,3,5
2,3,5
(Refer to Figure 68.) Which results in the largest number?
2.
8106. (Refer to Figure 28.) Identify the bottom view of the object shown.
2.
8135. (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.
8179 Two boxes which weigh 10 lb & 5 lb are placed in an airplane so that their distance aft from the CG are 4ft & 2ft respectively. How far forward of the CG should a third box, weighing 20 lb, be placed so that the CG will not be changed?
2.5 ft
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.
8142. (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
How far ahead of an idling turbojet engine does the danger area extend
25 feet
On a fillet weld, the penetration requirement includes what percentage of the base metal thickness A-100 percent B-25 to 50 percent C-60 to 80 percent
25 to 50 percent
8151. (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.
8144. (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.
8148. (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.
Figure 42 A-1 B-2 C-3
3
Figure 43 identity the Clovis bolt illustrates A-1 B-3 C-2
3
Figure 44) identify The weld caused by an excessive amount of acetylene A-4 B-1 C-3
3
Which of the following occurs when a mechanical forces is repeatedly applied to most metals at room temperature, such as rolling, hammering, or bending 1.The metals become artificially aged 2.The metals become stress corrosion cracked 3.The metals become cold worked, strain or work hardened A-2 B-1 and 2 C-3
3
8113. (Refer to Figure 31.) What are the proper procedural steps for sketching repairs and alterations?
3, 1, 4, 2.
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.
3, 1, 6, 2, 5, 4
If an engine is turning 1,965 rpm at 65 percent power, what is its maximum rpm?
3,023.
8104. (Refer to Figure 27.) In the isometric view of a typical aileron balance weight, identify the view indicated by the arrow.
3.
8109. (Refer to Figure 29.) Identify the left side view of the object shown.
3.
8122. (Refer to Figure 33.) Which material section-line symbol indicates cast iron?
3.
8128. (Refer to Figure 35.) Identify the extension line.
3.
8130-2. Which of the following terms is/are used to indicate specific measured distances from the datum and/or other points identified by manufacturer, to points in or on the aircraft? 1. Zone numbers. 2. Reference numbers. 3. Station numbers.
3.
What aluminum alloy designations indicate that the metal has received no hardening or tempering treatment A-3003-F B-5052-H36 C-6061-Q
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.
(Refer to the Figure 66.) Solve the equation.
36,002.
When flaring aluminum tubing for use with AN fittings, the flare angle must be....
37°
(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.
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.
Which type crack can be detected by magnetic particle inspection using either circular or longitudinal magnetization A-45 B-Longitudinal C-Transverse
45
What is the ratio of 10 feet to 30 inches?
4:1
(Refer to Figure 52.) Solve the equation.
5
8126. (Refer to Figure 34.) Using the information, what size drill would be required to drill the clevis bolthole?
5/16 inch.
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
52-1/2 inches
(Refer to Figure 54.) Compute the area of the trapezoid.
52.5 square feet.
8152. (Refer to Figure 41.) Determine the fuel consumption with the engine operating at cruise, 2,350 RPM.
55.3 pounds per hour.
8177 An aircraft as loaded weighs 4.954 lbs at a CG of +30.5in. The CG range is +32.0 in to +42.1 in. Find the minimum weight of the ballast necessary to bring the CG within the CG range. The ballast arm is +162 in.
57.16 lbs
What is the ratio of a gasoline fuel load of 200 gallons to one of 1,680 pounds?
5:7
(Refer to Figure 55.) Find the area of the triangle shown.
6 square inches.
Find the square root of 3,722.1835.
61.0097.
Express 5/8 as a percent.
62.5 percent.
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.
8149. (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.
8146. (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.
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
The aluminum code number 1100 identifies what type of aluminum A-Aluminum alloy containing 11 percent copper B-Aluminum alloy containing zinc C-99 percent commercially pure aluminum
99 percent commercially pure aluminum
A part which is being prepared for dye penetrant inspection should be cleaned with A-A volatile petroleum-base solvent B-The penetrant developer C-Water-base solvents only
A volatile petroleum-base solvent
8139. What type of diagram shows the wire size required for a particular installation?
A wiring diagram.
8014. What is the total capacitance of a certain circuit containing three capacitors with capacitances of .25 microfarad, .03 microfarad, and .12 microfarad, respectively? (Note: CT = C₁ + C₂ + C₃)
A. .4 µF.
8017. 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?
A. 1,000 watts. (The same)
8078. (Refer to Figure 22.) Which illustration is correct concerning bias application and current (positive charge) flow?
A. 1.
8043. 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?
A. 10 volts.
8074. (Refer to Figure 21.) Which symbol represents a variable resistor?
A. 2.
8035. 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: Rt = E²/P)
A. 24 ohms.
8053. 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?
A. 36 ohms.
8036. Which requires the most electrical power? (Note: 1 horsepower = 746 watts)
A. A 1/5-horsepower, 24-volt motor which is 75 percent efficient.
8005. An increase in which of the following factors will cause an increase in the inductive reactance of a circuit?
A. Inductance and frequency. (XL = 2πfL)
8002-1. What is the opposition to the flow of AC produced by a magnetic field with generated back voltage (EMF) called?
A. Inductive reactance.
8026. (Refer to Figure 7.) If resistor R₃ is disconnected at terminal D, what will the ohmmeter read?
A. Infinite resistance.
8070. (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
A. No. 5.
8063. (Refer to Figure 16.) When electrical power is applied to the bus, which relays are energized?
A. PCC and TCC.
8048. What happens to the current in a voltage step-up transformer with a ratio of 1 to 4?
A. The current is stepped down by a 1 to 4 ratio.
8031. 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-watts light is measured, it will be
A. equal to the voltage across the 20-watt light.
8003. The basis for transformer operation in the use of alternating current is mutual
A. inductance.
8041. Transfer of electric energy from one circuit to another without the aid of electrical connections
A. is called induction.
8006. (Refer to Figure 1.) When different rated capacitors are connected in series in a circuit, the total capacitance is
A. less than the capacitance of the lowest rated capacitor.
8013. (Refer to Figure 3.) When more than two inductors of different inductances are connected in parallel in a circuit, the total inductance is
A. less than the inductance of the lowest rated inductor.
8009-2. Convert farads to microfarads by
A. multiplying farads by 10 to the power of 6.
8020. The potential difference between conductors which are insulated from each other is measured in
A. volts.
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
What publication lists the standard hand signals that are used for directing a taxiing aircraft
ASA-AMT-G, General textbook, page 629
In performing a dye penetrant inspection, the developer A-Seeps into a surface crack to indicate the presence of a defect B-Acts as a blotter to produce a visible indication C-Thoroughly cleans the surface prior to inspection
Act as a blotter to produce a visible indication
Where is intergranular corrosion most likely to occur on an aircraft
Along the grain boundaries of aluminum alloys that have been improperly heat-treated. Extruded aluminum alloy is susceptible to intergranular corrosion
What tools are proper for removing corrosion from aluminum alloy
Aluminum wool or aluminum wire brushes. Severe corrosion can be removed with a rotary file
The society of automotive engineers and the American iron and steel institute use a numerical index system to identify the composition of various steels A-Percentage of the basic element in the alloy B-Percentage of carbon in the alloy in hundredths of a percent C-Basic alloying elements
Basic alloying element
8049. (Refer to Figure 13.) Determine the total current flow in the circuit.
B. 1.4 amperes.
8084. (Refer to Figure 26.) Which of the logic gate output conditions is correct with respect to the given inputs?
B. 2.
8038. What is the operating resistance of a 30-watt light bulb designed for a 28-volt system?
B. 26 ohms.
8025. (Refer to Figure 6.) If resistor R₅ is disconnected at the junction of R₄ and R₃ as shown, what will the ohmmeter read?
B. 3 ohms.
8065. (Refer to Figure 17.) Which of the components is a potentiometer?
B. 3.
8034. (Refer to Figure 10.) What is the measured voltage of the series-parallel circuit between terminals A and B?
B. 3.0 volts.
8049-1. In a parallel circuit with three 6-ohms resistors across a 12-volt battery, what is the total current (It) value in the circuit?
B. 6 amps.
8082. (Refer to Figure 24.) Which statement concerning the depicted logic gate is true?
B. Any input being 1 will produce a 1 output.
8032. 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?
B. At least 35 milliwatts.
8051. Which of these will cause the resistance of a conductor to decrease?
B. Decrease the length or increase the cross-sectional area.
8047. Which is correct in reference to electrical resistance?
B. If one of three bulbs in a parallel lighting circuit is removed, the total resistance of the circuit will become greater.
8052. Through which material will magnetic lines of force pass the most readily?
B. Iron.
8059. (Refer to Figure 15.) When the landing gear is down, the green light will not come on if an open occurs in wire
B. No. 6.
8039. Which statement is correct when made in reference to a parallel circuit?
B. The total current is equal to the sum of the currents through the individual branches of the circuit.
8079. Forward biasing of a solid state device will cause the device to
B. conduct..
8061.(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
B. crossfeed position
8010. Unless otherwise specified, any values given for current or voltage in an AC circuit are assumed to be.
B. effective values.
8056. A thermal switch, or thermal protector, as used in an electric motor, is designed to
B. open the circuit in order to allow cooling if the motor.
8068. (Refer to Figure 18.) The control valve switch must be placed in the neutral position when the landing gears are down to
B. prevent the warning horn from sounding when the throttles are closed.
8040. Diodes are used in electrical power supply circuits primarily as
B. rectifiers.
8006-1. Capacitors are sometimes used in DC circuits to
B. smooth out slight pulsations in current/voltage. pulsations
What special precautions should be taken when towing an aircraft that is equipped with a steerable nosewheel
Be sure that the nosewheel does not try to turn past its stops. Some aircraft must have the torsion links on the nosewheel strut disconnected when they are being towed
8117. What should be the first step of the procedure in sketching an aircraft wing skin repair?
Block in the views.
(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, which is/are true?
Both No. 1 and No. 2 are 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 direct current that is alternately reversed in direction and gradually reduced in strength A-Both No.1 and No.2 are true B-Only No.1 is true C-Only No.2 is true
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 A-Only No.1 is true B-Only No.2 is true C-Both No.1 and No.2 are true
Both No.1 and No.2 are true
Figure 45) what type weld is shown at A A-Fillet B-Butt C-Lap
Butt
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.
How may rust be removed from a highly stressed metal part
By glass bead blasting, by careful polishing with mild abrasive paper or by using fine buffing compound on a cloth buffing wheel
How is the locking feature of he fiber-type locknut obtained A-By the use of an unthreaded fiber locking insert B-By a fiber insert held firmly in place at the base of the load carrying section C-By making the threads in the fiber insert slightly smaller than those in the load carrying section
By the use of an unthreaded fiber locking insert
What is defined as a group of bits representing a complete piece of information?
Byte.
8024. (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?
C. 10 ohms.
8027. (Refer to Figure 8.) With an ohmmeter connected into the circuit as shown, what will the ohmmeter read?
C. 10 ohms. The open circuit (break) in resistor R(3) gives it an infinite resistance, and it does not affect the reading of the ohmmeter.
8039-1. Which of the following are commonly used as rectifiers in electrical circuits? 1. Anodes. 2. Cathodes. 3. Diodes.
C. 3.
8044. (Refer to Figure 11.) Find the total current flowing in the wire between points C and D.
C. 3.0 amperes.
8101-1. Which of the following best describes the contributing factors to thermal runaway in a nickel-cadmium battery installed in an aircraft?
C. Low internal resistance intensified by high cell temperatures and a high current discharge/charge rate in a constant potential (voltage) charging system.
8071. (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
C. No. 6.
8072-1. What is the purpose of the ground symbol used in electrical circuit diagrams?
C. To show that there is a return path for the current between the source of electrical energy and the load.
8015. Which requires the most electrical power during operation? (Note: 1 horsepower = 746 watts)
C. Two lights requiring 3 amperes each in a 24-volt parallel system. P = EI P = 2 x 3 x 24 = 144
8028. (Refer to Figure 9.) How many instruments (voltmeters and ammeters) are installed correctly?
C. Two. The first ammeter is installed across the voltage. This is wrong; the ammeter will burn out. The first voltmeter will measure the source voltage (the voltage of the battery), but its polarity is wrong. It will read backward. The voltmeter across the light bulb is installed correctly. The ammeter in series with the light bulb and the battery is correct. It will read the current flowing through the light bulb.
8076. In a N-P-N transistor application, the solid state device is turned on when the
C. base is positive with respect to the emitter.
8080. (Refer to Figure 23.) If an open occurs at R₁, the light
C. cannot be turn off. The base and the collector will have the same voltage. The base current will be maximum, and the light cannot be turned off.
8066. (Refer to Figure 17.) The electrical symbol represented at number 5 is a variable
C. capacitor.
8011. When different rated capacitors are connected in parallel in a circuit, the total capacitance is (Note: CT = C₁ + C₂ + C₃...)
C. equal to the sum of all the capacitance's.
8012. When inductors are connected in series in a circuit, the total inductance is (where the magnetic fields of each indicator do not affect the other) (Note: LT = L₁ + L₂ + L₃...)
C. equal to the sum of the individual inductances.
8002. The term that describes the combined resistive forces in an AC circuit is
C. impedance.
8029. The correct way to connect a test voltmeter in a circuit is
C. in parallel with a unit.
8004. The opposition offered by a coil to the flow of alternating current is called (disregard resistance)
C. inductive reactance.
8022. When calculating power in a reactive or inductive AC circuit, the true power is
C. less than the apparent power.
8007. In an AC circuit, the effective voltage is
C. less than the maximum instantaneous voltage
8110-1. What type of drawing line consists of alternating long and short lines?
Center.
A particular component is attached to the aircraft structure by the use of an aircraft bold and a castle tension nut combination . If the cotter pin does not align within the recommended torque range, the acceptable practice is to A-Exceed the recommended torque range by no more than 10 percent B-Tighten below the torque range C-Change washers and try again
Change washers and try again
Which material cannot be hear treated repeatedly without harmful effects A-Unclad aluminum alloy in sheet form B-6061-T9 stainless steel C-Clad aluminum alloy
Clad aluminum alloy
Aircraft bolts are usually manufactured with a A-Class 1 fit for the threads B-Class 2 fit for the threads C-Class 3 fit for the threads
Class 3 fit for the threads
Unless otherwise specified, torque values for tightening aircraft nuts and bolts relate to A-Clean, dry threads B-Clean, lightly oiled threads C-Both dry and lightly oiled threads
Clean, dry threads
What method of magnetic particle inspection is used most often to inspect aircraft parts for invisible cracks and other defects A-Residual B-Inductance C-Continuous
Continuous
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
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 or 1/4H
Which condition indicates a part has cooled too quickly after being welded A-Cracking adjacent to the weld B-Discoloration of the base metal C-Gas pockets, porosity, and slag inclusions
Cracking adjacent to the weld
8119-1. What is the class of working drawing that is the description/depiction of a single part?
Detail drawing.
What is meant by detonation in an aircraft reciprocating engine
Detonation is an uncontrolled burning of the fuel in the cylinder of an engine. It is an explosion, rather than a smooth burning
What damage is likely to occur if an aircraft reciprocating engine that is designed to use 100-octane fuel is operated with 80-octane fuel
Detonation will occur, which will cause such things as bent connecting rods, burned pistons and cracked cylinder heads
Which tool can be used to measure the alignment of a rotor shaft or the plane of rotation of a disk A-Dial indicator B-Shaft gauge C-Protractor
Dial indicator
Identify the correct statement A-An outside micrometer is limited to measuring diameters B-Tools used on certificated aircraft must be an approved type C-Dividers do not provide a reading when used as a measuring device
Dividers do not provide a reading when used as a measuring device
Figure 45) What type weld is shown at B A-Butt B-Double butt C-Fillet
Double butt
The testing medium that is generally used in magnetic particle inspection utilizes a ferromagnetic material that has A-High permeability and low retentivity B-Low permeability and high retentivity C-High permeability and high retentivity
High permeability and low retentivity
What is used to clean transparent plastic windshields and windows of an aircraft
Mild soap and plenty of clean water
What is an advantage of a double flare on aluminum tubing?
More resistant to damage when the joint is tightened.
A bolt with an X inside a triangle on the head is classified as an A-NAS standard aircraft bolt B-NAS close tolerance bolt C-AN corrosion-resistant steel bolt
NAS close tolerance bolt
8158 (1) Private aircraft are required by regulations to be weighed periodically (2) Private aircraft are required to be weighed after making any alterations Which is true?
Neither #1 or #2 are true
8120-1. (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.
Metal tubing fluid lines are sized by wall thickness and....
Outside diameter in 1/16 inch increments.
Alclad is a metal consisting of A-Aluminum alloy surface layers and a pure aluminum core B-Pure aluminum surface layers on an aluminum alloy core C-A homogeneous mixture of pure aluminum and aluminum alloy
Pure aluminum surface layers on an aluminum alloy core
8154 What tasks are completed prior to weighing an aircraft to determine its empty weight?
Remove all items except those on the aircraft equipment list; drain fuel & hydraulic fluid
Holes and a few projecting globules are found in a weld. What action should be taken A-Reweld the defective portions B-Remove all the old weld, and reweld the joint C-Grind the rough surface smooth, inspect, and Reweld all gaps/holes
Remove all the old weld, and reweld the joint
When installing bonded clamps to support metal tubing....
Remove paint or anodizing from tube at clamp location
What must be done to a piece of aluminum alloy to remove surface corrosion and to treat the metal to prevent further corrosion
Remove the corrosion residue with a bristle brush or a nylon scrubber. Neutralize the surface with chromic acid or with some type of conversion coating. Protect the surface from further corrosion with a coat of paint
8116-1. In a sectional view drawing, that sections illustrate particular parts of an object?
Removed.
When checking an item with the magnetic particle inspection method, circular and longitudinal magnetization should be used to A-Reveal all possible defects B-Evenly magnetize the entire part C-Ensure uniform current flow
Reveal all possible defects
8156 Which of the following can provide the empty weight of an aircraft if the aircraft's W&B records become lost, destroyed or otherwise inaccurate?
Reweighing the aircraft
8115. (Refer to Figure 32.) Wha 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 shell during and after it had been annealed A-Rapid cooling; high strength B-Slow cooling; low strength C-Slow cooling; increased resistance to wear
Slow cooling; low strength
Rolling-type Flaring Tools are used to flare X, X, and X tubing.
Soft copper, aluminum, brass
What is generally used in the construction of aircraft engine firewalls A-Stainless steel B-Chrome-molybdenum alloy steel C-Magnesium-titanium alloy steel
Stainless steel
Aircraft bolts with a cross or asterisk marked on the bolt head are A-Made of aluminum alloy B-Close tolerance bolts C-Standard steel bolts
Standard steel bolts
8130-3. What numbering system is used to locate fuselage frames?
Station numbers.
A fiber-type, self-locking but must never be used on an aircraft if the bolt is A-Under shear loading B-Under tension loading C-Subject to rotation
Subject to rotation
8176 The amount of fuel used for computing empty weight and corresponding CG is...
Unusable fuel
Under magnetic particle inspection, a part will be identified as having a fatigue crack under which condition A-The discontinuity patterns is straight B-The discontinuity is found in a no stressed area of the part C-The discontinuity is found in a highly stressed area of the part
The discontinuity is found in a highly stressed area of the part
What is the significance of the two numbers, 100/130, in the dual rating of aviation gasoline
The first number is the octane rating or performance number of the fuel when operating with a lean mixture, and the last number is the octane rating or performance number when operating with a rich mixture
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?
The hose may have developed a set, or have been manufactured with a pre-set shape, and must be supported to maintain its shape.
8132. 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.
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?
The minimum radius for steel is greater than for aluminum.
Select a characteristic of a good gas weld A-Rhe depth of penetration shall be sufficient to ensure fusion of the filler rod B-The height of the weld bead should be 1/8 inch above the base metal C-The weld should taper off smoothly into the base metal
The weld should taper off smoothly into the base metal
What information must be located near the fuel tank filler opening in an aircraft powered by a reciprocating engine
The word "Avgas," and the minimum fuel grade
What information must be located near the fuel tank filler opening in an aircraft powered by a turbine engine
The words "Jet Fuel," the permissible fuel designations, or references to the Airplane Flight Manual (AFM) for permissible fuel designations. For pressure fueling systems, the maximum permissible fueling supply pressure and the maximum permissible defueling pressure
The clearance between the pistol rings and the ring lands is measured with a A-Micrometer caliper B-Thickness gauge C-Depth gauge
Thickness gauge
The side clearances of piston rings are measured with a A-Micrometer caliper gauge B-Thickness gauge C-Dial gauge
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 arbors and the parallel bar with a A-Dial gauge B-Height gauge C-Thickness gauge
Thickness gauge
Which took is used to measure the clearance between a surface plate and a relatively narrow surface being checked for flatness A-Depth gauge B-Thickness gauge C-Dial Indicator
Thickness gauge
How many of these factors are considered essential knowledge for x-ray exposure 1.Processing of the film 2.Materials thickness and density 3.Exposure distance and angle 4.Film characteristics A-One B-Three C-Four
Three
Unless otherwise specified or required, aircraft bolts should be installed so that the bolt head is A-Upward, or in a rearward direction B-Upward, or in a forward direction C-Downward, or in a forward direction
Upward, or in a forward direction
A gas or fluid line marked with the letters PHDAN is....
Used to carry a hazardous substance.
What is the danger of using a fuel that vaporizes too readily
Vapor lock can occur in the fuel lines. This will shut off the flow of fuel to the engine
How is a Clevis bolt used with a fork-end cable terminal secured A-With a shear but tightened to snug fit, but with no strain imposed on the fork and safeties with a cotter pin B-With a castle nut tightened until slight binding occurs between the fork and the fitting to which it is being attached C-With a shear but and cotter pin or a thin self-locking nut tightened enough to prevent rotation of the bolt in the fork
With a shear nut tightened to a snug fit, but with no strain imposed on the fork and safetied with a cotter pin
what is the purpose of alodine
alodine is a chemical process that deposits a protective film on aluminum alloys. this film improves corrosion resistance and paint adhesion
what are some of the possible outcomes of using a lower grade of avgas than the specified grade
an increased chance of engine damage due to detonation loss of engine power and an increased probability of overheating
8138. A drawing in which the subassemblies or parts are shown as brought together on the aircraft is called
an installation drawing.
8185-1 When, or under what conditions are adverse loading checks conducted?
anytime a repair or alteration causes EWCG to fall outside the CG range
8169-1 When delaying 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.
if a mixture of aviation gasoline and jet fuel is used in a reciprocation aircraft engine what are the possible results
avgas contaminates by jet fuel must not be used in piston engines the engine may be damaged or destroyed
discuss the gerenal precautions that should be observed when washing an airplane
avoid or protect areas, which may be damaged or contaminated, such as pitot and static ports, hinges, sealed areas, and bearings
describe the important precautions that should be observed when fueling an aircraft
be certain you are using the correct fuel, properly grounded the aircraft and refueling unit and protect the aircraft surface from hose and nozzle damage
what safety procedures must be observed when had propping a small aircraft engine
become thoroughly trained have a qualified person in the cockpit check the brakes call switch off before moving the prop and make sure you have solid footing when ready to start call contact and listen for the reply swing the prop with the flat of your hand and move back form the prop arc
8105. (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.
8136. (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.
if an engine induction fire occurs while starting a reciprocating engine what procedure should be followed to extinguish the fire
continue cranking the engine to start it ans suck the fire into the engine if the engine doesn't stat and the fire continues to burn discontinue the start attempt and extinguish the fire with a suitable fire extinguisher
8134. A hydraulic system schematic drawing typically indicates the
direction of fluid flow through the system.
8161 What type of measurement is used to designate the arm in W&B computations?
distance
8191-2 If an aircraft CG is found to be at 24% of MAC, that 24% is an expression of the...
distance from the LEMAC
8117-1. A simple way to find the center of a circle on a sketch or drawing, or a circular piece of material is to
draw two non-parallel chord lines across the circle and then a corresponding perpendicular bisector line across each chord line.
8163 The maximum weight of an aircraft is the...
empty weight + useful load
8167-1 If it is necessary to weigh an aircraft with full fuel tanks, all fuel weight must be subtracted from the scale readings..
except unusable fuel
8137. The drawings often used in illustrated parts manuals are
exploded view drawings.
8183-1 All other things being equal, if an item if useful load located aft of an aircraft's CG is removed, the aircraft's CG change will be...
forward in proportion to the weight of the item and its location in the aircraft
8191-1 An aircraft's LEMAC & TEMAC are defined in the terms of distance...
from the datum
8131. One purpose for schematic diagrams is to show the
functional location of components within a system.
8120. Sketches are usually made easier by the use of
graph paper.
what is meant by the term hot start when starting a jet engine
ignition occurs with an excessively rich mixture, leading to a rapid temperature rise that can exceed the exhaust gas temperature limit
8160 To obtain useful weight data for purposes of determining the CG, it is necessary that an aircraft be weighed
in a level flight
8173 The maximum weight as used in weight and balance control of a given aircraft can normally be found...
in the Aircraft Specification or TCDS
where can the standard aircraft taxi hand signals be found
in the aeronautical information manual (aim)
Examples of units used in the conventional (U.S. or English) measurement include
inch, feet, and yard.
8141. 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 a part may have and still be acceptable.
what does the number 100 signify in 100LL aviation gasoline
it refers to the lean mixture performance number of the fuel
what is the best way to protect piano hinges from corrosion
keep them clean and properly lubricated
8157-2 Which would have an effect on aircraft CG results when conducting a W&B check?
leaving the downlinks installed
8157 In the theory of W&B, what is the name of the distance from the fulcrum to an object?
lever arm
why should an aircraft technician become familiar with standard light signals
light signals may be used when taxiing an airplane without a radio or when a radio becomes inoperative on a tower controlled airport
is it permissible to use avgas in a turbine engine
limited operation may be allowed by the manufacture continued use may reduce efficiency due to lead deposits on the turbine blades
what are the preferred cleaners for plastic surfaces such as windshields
mild soap and water or a manufacturer approved cleaner
8175 The CG range in single-rotor helicopters is..
more restricted than airplanes
what is the causes of hydraulic lock in large radial engines
oil seeps by the piston rings and accumulates in the combustion chamber of lower cylinders when a piston comes up on its compression stroke the incompressible liquid seizes it
8112. (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.
8118. (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.
8157-3 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
8171 When determining the empty weight of an aircraft, certificated under airworthiness standards (14 CFR Part 23), the oil contained in the supply tank is considered...
part of the empty weight
describe the precautions that should be taken to protect life and property while starting and running an aicraft engine
study the procedures in the airplane flight manual be sure the propeller or inlet area is clear and check for loose stones, gravel etc. that could be sucked into the prop or engine also ensure that the prop or jet blast doesn't blow into hangers or other airplanes and have a fire guard nearby
part 23.973 of the FAA regulations specifies that certain marking must be placed adjacent to fuel filler openings what marking are used for reciprocating engine powered airplanes
the filler opening must be marked with the fuel grade and the word avgas
for what reason should you avoid cleaning anodized aluminum surfaces with aluminum metal polish
the metal polish
8153 When computing weight and balance, an airplane is considered to be in balance when...
the movement of the passengers will not cause the moment arms to fall outside the CG range
name at least three possible hazards that may be encountered during typical ground operation, suck as during engine run up or taxing
the possibility of fire, especially during engine starting, turning props, rotors, prop or jet blast and inlet areas. other aircraft, vehicles, people and obstacles. foreign objects such as rocks, gravel, rags, or loose hardware. high noise levels that might cause hearing damage. hydraulic lock in radial engines. weathervaning of tailwheel aircraft
what are the indications of water in aircraft fuel after draining a sample from the fuel sumps
the sample may have a cloudy or hazy appearance or a solid slug of water
why are piano type hinges prime spots for corrosion
the steel pin and aluminum hinge material are dissimilar metals and he hinge design tends to trap moisture and contaminants
The total piston displacement of a specific engine is
the total displaced by all pistons during the revolution of the crankshaft.
8116. 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