06/12/2014

Bank: (Aviation Mechanic Powerplant)

Airman Knowledge Test Question Bank
The FAA computer-assisted testing system is supported by a series of supplement publications.
These publications, available through several aviation publishers, include the graphics, legends,
and maps that are needed to successfully respond to certain test items. Use the following URL to
download a complete list of associated supplement
books: http://www.faa.gov/pilots/testing/supplements/

The Learning Statement Reference Guide for Airman Knowledge Testing contains listings of
learning statements with their associated codes. It can be located
at: http://www.faa.gov/training_testing/testing/media/LearningStatementReferenceGuide.pdf



1. AMP030 AMP

What is likely to occur if a reciprocating engine is operated at high power settings before it is properly
warmed up?
A) Oil starvation of bearings and other parts.
B) Excessive thinning of the engine oil.
C) Accelerated oil breakdown and oxidation.

2. AMP063 AMP

If the ignition switch is moved from BOTH to either LEFT or RIGHT during an engine ground check,
normal operation is usually indicated by a
A) large drop in RPM.
B) momentary interruption of both ignition systems.
C) slight drop in RPM.

3. AMP056 AMP

The five events of a four stroke cycle engine in the order of their occurrence are
A) intake, ignition, compression, power, exhaust.
B) intake, power, compression, ignition, exhaust.
C) intake, compression, ignition, power, exhaust.

4. AMP056 AMP

During the inspection of an engine control system in which push pull control rods are used, the
threaded rod ends should
A) insure that the safety wire passes thru the hole in shank of the rod-end.
B) be checked for thread engagement of at least two threads but not more than four threads.
C) be checked for the amount of thread engagement by means of the inspection holes.

5. AMP064 AMP

If the ignition switch is moved from BOTH to either LEFT or RIGHT during an engine ground check, an
unsafe condition is usually indicated by
A) no change in RPM.
B) momentary interruption of both ignition systems.
C) slight drop in RPM.

6. AMP056 AMP

Master rod bearings are generally what type?
A) Plain.
B) Roller.
C) Ball.

7. AMP056 AMP

If the crankshaft runout readings on the dial indicator are plus .002 inch and minus .003 inch, the runout
is
A) .005 inch.
B) plus .001 inch.
C) minus .001 inch.

8. AMP056 AMP

Some cylinder barrels are hardened by
A) nitriding.
B) shot peening.
C) tempering.

9. AMP056 AMP

How is proper end-gap clearance on new piston rings assured during the overhaul of an engine?
A) By accurately measuring and matching the outside diameter of the rings with the inside diameter of
the cylinders.
B) By using rings specified by the engine manufacturer.
C) By placing the rings in the cylinder and measuring the end-gap with a feeler gauge.

10. AMP056 AMP

The volume of a cylinder equals 70 cubic inches when the piston is at bottom center. When the piston
is at the top of the cylinder, the volume equals 10 cubic inches. What is the compression ratio?
A) 1:7.
B) 7:10.
C) 7:1.

11. AMP056 AMP

What is the purpose of the safety circlet installed on some valve stems?
A) To hold the valve guide in position.
B) To hold the valve spring retaining washer in position.
C) To prevent valves from falling into the combustion chamber.

12. AMP068 AMP

Three types of turbine blades are
A) reaction, converging, and diverging.
B) impulse, reaction, and impulse reaction.
C) impulse, vector, and impulse-vector.

13. AMP068 AMP

Turbine blades are generally more susceptible to operating damage than compressor blades because
of
A) higher centrifugal loading.
B) exposure to high temperatures.
C) high pressure and high velocity gas flow.

14. AMP069 AMP

J et engine turbine blades removed for detailed inspection must be reinstalled in
A) a specified slot 180 away.
B) a specified slot 90 away in the direction of rotation.
C) the same slot.

15. AMP068 AMP

The non-rotating axial-flow compressor airfoils in an aircraft gas turbine engine, are called
A) pressurization vanes.
B) stator vanes.
C) bleed vanes.

16. AMP068 AMP

Between each row of rotating blades in a turbine engine compressor, there is a row of stationary blades
which act to diffuse the air. These stationary blades are called
A) buckets.
B) rotors.
C) stators.

17. AMP062 AMP

Standard sea level pressure is
A) 29.00 inches Hg.
B) 29.29 inches Hg.
C) 29.92 inches Hg.

18. AMP068 AMP

Generally, when starting a turbine engine, the starter should be disengaged
A) after the engine has reached self-accelerating speed.
B) only after the engine has reached full idle RPM.
C) when the ignition and fuel system are activated.

19. AMP069 AMP

A turbine engine hot section is particularly susceptible to which kind of damage?
A) Scoring.
B) Cracking.
C) Galling.

20. AMP008 AMP

Which of the following types of combustion sections are used in aircraft turbine engines?
A) Annular, variable, and cascade vane.
B) Can, multiple can, and variable.
C) Multiple can, annular, and can-annular.

21. AMP019 AMP

The compression ratio of an axial flow compressor is a function of the
A) number of compressor stages.
B) rotor diameter.
C) air inlet velocity.

22. AMP068 AMP

When starting a turbine engine, a hung start is indicated if the engine
A) exhaust gas temperature exceeds specified limits.
B) fails to reach idle RPM.
C) RPM exceeds specified operating speed.

23. AMP020 AMP

Newton`s Law of Motion generally termed the, "Law of Momentum," states:
A) Acceleration is produced when a force acts on a mass. The greater the mass, the greater the
amount of force needed.
B) For every action there is an equal and opposite reaction.
C) Every body persists in its state of rest, or of motion in a straight line, unless acted upon by some
outside force.

24. AMP068 AMP

The Brayton cycle is known as the constant
A) pressure cycle.
B) temperature cycle.
C) mass cycle.

25. AMP004 AMP

Turbine engine components exposed to high temperatures generally may NOT be marked with
1. layout dye.
2. commercial felt tip marker.
3. wax or grease pencil.
4. chalk.
5. graphite lead pencil.
A) 1, 2, and 3.
B) 3 and 5.
C) 3, 4 and 5.

26. AMP068 AMP

What is the first engine instrument indication of a successful start of a turbine engine?
A) A rise in the engine fuel flow.
B) A rise in oil pressure.
C) A rise in the exhaust gas temperature.

27. AMP068 AMP

Who establishes the recommended operating time between overhauls (TBO) of a turbine engine used
in general aviation?
A) The engine manufacturer.
B) The operator (utilizing manufacturer data and trend analysis) working in conjunction with the FAA.
C) The FAA.

28. AMP058 AMP

Who establishes mandatory replacement times for critical components of turbine engines?
A) The FAA.
B) The operator working in conjunction with the FAA.
C) The engine manufacturer.

29. AMP008 AMP

Straightening nitrided crankshafts is
A) recommended.
B) not recommended.
C) approved by the manufacturer.

30. AMP045 AMP

When must an Airworthiness Directive (AD) be complied with after it becomes effective?
A) As specified in the AD.
B) During the next scheduled inspection.
C) At the next scheduled overhaul.

31. AMP045 AMP

(1) Airworthiness Directives are Federal Aviation Regulations and must be complied with unless specific
exemption is granted.
(2) Airworthiness Directives of an emergency nature may require immediate compliance upon receipt.
Regarding the above statements,
A) only No. 1 is true.
B) only No. 2 is true.
C) both No. 1 and No. 2 are true.

32. AMP007 AMP

Which of the following can inspect and approve an engine major repair for return to service?
A) Certificated mechanic with airframe and powerplant ratings.
B) Certificated mechanic with a powerplant rating.
C) Certificated mechanic with inspection authorization.

33. AMP069 AMP

Which of the following conditions is usually not acceptable to any extent in turbine blades?
A) Cracks.
B) Pits.
C) Dents.

34. AMP041 AMP

How are discharge nozzles in a fuel injected reciprocating engine identified to indicate the flow range?
A) By an identification letter stamped on one of the hexes of the nozzle body.
B) By an identification metal tag attached to the nozzle body.
C) By color codes on the nozzle body.

35. AMP007 AMP

A severe condition of chafing or fretting in which a transfer of metal from one part to another occurs is
called
A) scoring.
B) burning.
C) galling.

36. AMP007 AMP

Which of the following component inspections is to be accomplished on a 100-hour inspection?
A) Check internal timing of magneto.
B) Check cylinder compression.
C) Check valve timing.

37. AMP048 AMP

What publication is used for guidance to determine whether a powerplant repair is major or minor?
A) Airworthiness Directives.
B) Federal Aviation Regulations, Part 43, appendix A.
C) Technical Standard Orders.

38. AMP058 AMP

What maintenance record(s) is/are required following a major repair of an aircraft engine?
A) Entries in engine maintenance records and a list of discrepancies for the FAA.
B) Entries in the engine maintenance record and FAA Form 337.
C) Entry in logbook.

39. AMP009 AMP

Thermocouple leads
A) may be installed with either lead to either post of the indicator.
B) are designed for a specific installation and may not be altered.
C) may be repaired using solderless connectors.

40. AMP066 AMP

J et engine thermocouples are usually constructed of
A) alumel constantan.
B) iron constantan.
C) chromel alumel.

41. AMP012 AMP

Which of the following instrument conditions is acceptable and does NOT require immediate
correction?
1. Red line missing.
2. Pointer loose on shaft.
3. Glass cracked.
4. Mounting screws loose.
5. Case paint chipped.
6. Leaking at line B nut.
7. Will not zero out.
8. Fogged.
A) 5.
B) 4.
C) 1.

42. AMP056 AMP

In an aircraft equipped with a pressure drop type fuel flow indicating system, if one of the injector
nozzles becomes restricted, this would cause a decrease in fuel flow with
A) a decreased fuel flow indication on the gauge.
B) an increased fuel flow indication on the gauge.
C) no change in fuel flow indication on the gauge.

43. AMP056 AMP

The principal fault in the pressure type fuel flowmeter indicating system, installed on a horizontally
opposed continuous-flow fuel injected aircraft reciprocating engine, is that a plugged fuel injection
nozzle will cause a
A) normal operation indication.
B) lower than normal fuel flow indication.
C) higher than normal fuel flow indication.

44. AMP036 AMP

(Refer to Powerplant figure 3.) What are the fire-extinguisher container pressure limits when the
temperature is 50 F?
A) 425 - 575 PSIG.
B) 435 - 605 PSIG.
C) 475 - 625 PSIG.

45. AMP010 AMP

The use of water on class D fires
A) is most effective if sprayed in a fine mist.
B) will cause the fire to burn more violently and can cause explosions.
C) has no effect.

46. AMP034 AMP

How are most aircraft turbine engine fire extinguishing systems activated?
A) Electrically discharged cartridges.
B) Manual remote control valve.
C) Pushrod assembly.

47. AMP036 AMP

The most satisfactory extinguishing agent for a tailpipe or intake fire is
A) methyl bromide.
B) dry chemical.
C) carbon dioxide.

48. AMP041 AMP

Which of the following fire detectors are commonly used in the power section of an engine nacelle?
A) CO detectors.
B) Smoke detectors.
C) Rate of temperature rise detectors.

49. AMP036 AMP

In a fixed fire-extinguishing system, there are two small lines running from the system and exiting
overboard. These line exit ports are covered with a blowout type indicator disc. Which of the following
statements is true?
A) When the red indicator disc is missing, it indicates the fire extinguishing system has been normally
discharged.
B) When the yellow indicator disc is missing, it indicates the fire extinguishing system has been
normally discharged.
C) When the green indicator disc is missing, it indicates the fire extinguishing system has had a thermal
discharge.

50. AMP026 AMP

A term commonly used when two or more electrical terminals are installed on a single lug of a terminal
strip is
A) strapping.
B) piggy backing.
C) stacking.

51. AMP006 AMP

Electrical circuit protection devices are installed primarily to protect the
A) switches.
B) units.
C) wiring.

52. AMP026 AMP

When installing electrical wiring parallel to a fuel line, the wiring should be
A) in metal conduit.
B) in a non-conductive fire-resistant sleeve.
C) above the fuel line.

53. AMP026 AMP

Aircraft electrical wire is manufactured in sizes according to a standard known as
A) Military Specification (MS).
B) American Wire Gauge (AWG).
C) Technical Standard Order (TSO).

54. AMP006 AMP

As a general rule, starter brushes are replaced when they are approximately
A) one half their original length.
B) one-third their original length.
C) two-thirds their original length.

55. AMP002 AMP

What is the ampere-hour rating of a storage battery that is designed to deliver 45 amperes for 2.5
hours?
A) 112.5 ampere hour.
B) 90.0 ampere hour.
C) 45.0 ampere hour.

56. AMP063 AMP

What is used to polish commutators or slip rings?
A) Very fine sandpaper.
B) Crocus cloth or fine oilstone.
C) Aluminum oxide or garnet paper.

57. AMP044 AMP

The reason for flashing the field in a generator is to
A) restore correct polarity and/or residual magnetism to the field poles.
B) increase generator capacity.
C) remove excessive deposits.

58. AMP029 AMP

The viscosity of a liquid is a measure of its
A) resistance to flow.
B) rate of change of internal friction with change in temperature.
C) weight, or density.

59. AMP029 AMP

Which of the following factors helps determine the proper grade of oil to use in a particular engine?
A) Adequate lubrication in various attitudes of flight.
B) Positive introduction of oil to the bearings.
C) Operating speeds of bearings.

60. AMP030 AMP

Specific gravity is a comparison of the weight of a substance to the weight of an equal volume of
A) oil at a specific temperature.
B) distilled water at a specific temperature.
C) mercury at a specific temperature.

61. AMP029 AMP

Which of the following has the greatest effect on the viscosity of lubricating oil?
A) Temperature.
B) Engine RPM.
C) System Pressure.

62. AMP056 AMP

In order to maintain a constant oil pressure as the clearances between the moving parts of an engine
increase through normal wear, the supply pump output
A) increases as the resistance offered to the flow of oil increases.
B) remains relatively constant (at a given RPM) with less oil being returned to the pump inlet by the
relief valve.
C) remains relatively constant (at a given RPM) with more oil being returned to the pump inlet by the
relief valve.

63. AMP056 AMP

From the following, identify the factor that has the least effect on the oil consumption of a specific
engine.
A) Mechanical efficiency.
B) Engine RPM.
C) Lubricant characteristics.

64. AMP030 AMP

Which type valve prevents oil from entering the main accessory case when the engine is not running?
A) Bypass.
B) Relief.
C) Check.

65. AMP030 AMP

If an oil filter element becomes completely clogged, the
A) oil supply to the engine will be blocked.
B) oil will be bypassed back to the oil tank hopper where larger sediments and foreign matter will settle
out prior to passage through the engine.
C) bypass valve will open and the oil pump will supply unfiltered oil to the engine.

66. AMP056 AMP

Oil tank fillers on reciprocating engines are marked with the word
A) 'oil,' type, and grade, in accordance with 14 CFR part 33.
B) 'oil,' and tank capacity, in accordance with 14 CFR part 45.
C) 'oil,' in accordance with 14 CFR part 23.

67. AMP063 AMP

Which of the following are advantages of dual ignition in aircraft engines?
1. Gives a more complete and quick combustion of the fuel.
2. Provides a backup magneto system.
3. Increases the output power of the engine.
4. Permits the use of lower grade fuels.
5. Increases the intensity of the spark at the spark plugs.
A) 2, 3, 4.
B) 2, 3, 5.
C) 1, 2, 3.

68. AMP068 AMP

The capacitor type ignition system is used almost universally on turbine engines primarily because of its
high voltage and
A) low amperage.
B) long life.
C) high heat intensity.

69. AMP068 AMP

In a turbine engine dc capacitor discharge ignition system, where are the high voltage pulses formed?
A) At the breaker.
B) At the triggering transformer.
C) At the rectifier.

70. AMP063 AMP

Which of the following are distinct circuits of a high tension magneto?
1. Magnetic.
2. Primary.
3. E gap.
4. P lead.
5. Secondary.
A) 1, 2, 5.
B) 1, 3, 4.
C) 2, 4, 5.

71. AMP063 AMP

The secondary coil of a magneto is grounded through the
A) ignition switch.
B) primary coil.
C) grounded side of the breaker points.

72. AMP047 AMP

When a magneto is operating, what is the probable cause for a shift in internal timing
A) The rotating magnet looses its magnetism.
B) The distributor gear teeth are wearing on the rotor gear teeth.
C) The cam follower wear and/or the breaker points wear.

73. AMP068 AMP

Igniter plugs used in turbine engines are subjected to high intensity spark discharges and yet they have
a long service life because they
A) operate at much lower temperatures.
B) are not placed directly into the combustion chamber.
C) do not require continuous operation.

74. AMP064 AMP

Defective spark plugs will cause the engine to run rough at
A) high speeds only.
B) low speeds only.
C) all speeds.

75. AMP068 AMP

(Refer to Powerplant figure 5.) With power applied to the bus bar, what wire supplies standby power to
the starter relay contact?
A) 4.
B) 7.
C) 8.

76. AMP063 AMP

The primary advantage of pneumatic (air turbine) starters over comparable electric starters for turbine
engines is
A) a decreased fire hazard.
B) reduction gearing not required.
C) high power-to-weight ratio.

77. AMP047 AMP

When a magneto is disassembled, keepers are usually placed across the poles of the rotating magnet
to reduce the loss of magnetism. These keepers are usually made of
A) chrome magnet steel.
B) soft iron.
C) cobalt steel.

78. AMP041 AMP

The primary purpose of the air bleed openings used with continuous flow fuel injector nozzles is to
A) provide for automatic mixture control.
B) lean out the mixture.
C) aid in proper fuel vaporization.

79. AMP022 AMP

What corrective action should be taken when a carburetor is found to be leaking fuel from the discharge
nozzle?
A) Replace the needle valve and seat.
B) Raise the float level.
C) Turn the fuel off each time the aircraft is parked.

80. AMP037 AMP

What component is used to ensure fuel delivery during periods of rapid engine acceleration?
A) Acceleration pump.
B) Water injection pump.
C) Power enrichment unit.

81. AMP056 AMP

Which of the following best describes the function of an altitude mixture control?
A) Regulates the richness of the fuel/air charge entering the engine.
B) Regulates the air pressure above the fuel in the float chamber.
C) Regulates the air pressure in the venturi.

82. AMP038 AMP

If a float type carburetor leaks fuel when the engine is stopped, a likely cause is that the
A) float needle valve is worn or otherwise not seated properly.
B) float level is adjusted too low.
C) main air bleed is clogged.

83. AMP022 AMP

What carburetor component actually limits the desired maximum airflow to the engine at full throttle?
A) Throttle valve.
B) Venturi.
C) Manifold intake.

84. AMP042 AMP

When troubleshooting an engine for too rich a mixture to allow the engine to idle, what would be a
possible cause?
A) Economizer valve not operating correctly.
B) Mixture setting too rich.
C) Air leak in the intake manifold.

85. AMP068 AMP

A supervisory electronic engine control (EEC) is a system that receives engine operating information
and
A) adjusts a standard hydromechanical fuel control unit to obtain the most effective engine operation.
B) develops the commands to various actuators to control engine parameters.
C) controls engine operation according to ambient temperature, pressure, and humidity.

86. AMP068 AMP

The generally acceptable way to obtain accurate on-site temperature prior to performing engine
trimming is to
A) call the control tower to obtain field temperature.
B) observe the reading on the aircraft Outside Air Temperature (OAT) gauge.
C) hang a thermometer in the shade of the nose wheel-well until the temperature reading stabilizes.

87. AMP041 AMP

Which of the following turbine fuel filters has the greatest filtering action of any present-day filter type?
A) Micron filter.
B) plain screen mesh filter.
C) wafer screen filter.

88. AMP042 AMP

Where should the main fuel strainer be located in the aircraft fuel system?
A) Downstream from the wobble pump check valve.
B) At the lowest point in the fuel system.
C) At any point in the system lower than the carburetor strainer.

89. AMP041 AMP

The Federal Aviation Regulations require the fuel flow rate for gravity systems (main and reserve) to be
A) 125 percent of the takeoff fuel consumption of the engine.
B) 125 percent of the maximum, except takeoff, fuel consumption of the engine.
C) 150 percent of the takeoff fuel consumption of the engine.

90. AMP041 AMP

Fuel lines are kept away from sources of heat, and sharp bends and steep rises are avoided to reduce
the possibility of
A) liquid lock.
B) vapor lock.
C) positive lock.

91. AMP043 AMP

Fuel crossfeed systems are used in aircraft to
A) purge the fuel tanks.
B) jettison fuel in an emergency.
C) maintain aircraft stability.

92. AMP039 AMP

The primary condition(s) that allow(s) microorganisms to grow in the fuel in aircraft fuel tanks is (are)
A) warm temperatures and frequent fueling.
B) the presence of water.
C) the presence of dirt or other particulate contaminants.

93. AMP003 AMP

A method commonly used to prevent carburetor icing is to
A) preheat the intake air.
B) mix alcohol with the fuel.
C) electrically heat the venturi and throttle valve.

94. AMP065 AMP

If a fire starts in the induction system during the engine starting procedure, what should the operator
do?
A) Turn off the fuel switches to stop the fuel.
B) Continue cranking the engine.
C) Turn off all switches.

95. AMP070 AMP

What is the purpose of the rate of change controller in a turbocharger system?
A) Limits the maximum manifold pressure that can be produced by the turbocharger at full throttle
conditions.
B) Controls the rate at which the turbocharger discharge pressure will increase.
C) Controls the position of the waste gate after the aircraft has reached its critical altitude.

96. AMP070 AMP

The absolute pressure controller on some small engines is designed to sense oil pressure which flows
through the waste gate actuator and then through the controllers on the turbocharger system; the
pressure between the turbocharger and the throttle valve is called
A) turbocharger boost pressure.
B) induction manifold pressure.
C) upper deck pressure.

97. AMP056 AMP

The position of the cowl flaps during normal cruise flight conditions is
A) closed.
B) open.
C) one half open.

98. AMP056 AMP

During ground operation of an engine, the cowl flaps should be in what position?
A) Fully closed.
B) Fully open.
C) Opened according to ambient conditions.

99. AMP056 AMP

Which of the following assists in removing heat from the metal walls and fins of an air-cooled cylinder
assembly?
A) An intercooler system.
B) A baffle and cowl arrangement.
C) An engine induction system.

100. AMP056 AMP

During an operational check of an electrically powered aircraft engine cowl flap system, the motor fails
to operate. Which of the following is the first to be checked?
A) Flap actuator motor circuit breaker.
B) Flap actuator control switch.
C) Flap actuator motor.

101. AMP056 AMP

Cracks in cooling fins that do not extend into the cylinder head may be repaired by
A) filling the extremities of crack with liquid metal.
B) removing affected area and contour filing within limits.
C) welding and then grinding or filing to original thickness.

102. AMP056 AMP

Aircraft reciprocating engine cylinder baffles and deflectors should be repaired as required to prevent
loss of
A) power.
B) fin area.
C) cooling.

103. AMP056 AMP

A bent cooling fin on an aluminum cylinder head
A) should be sawed off and filed smooth.
B) should be left alone if no crack has formed.
C) should be stop drilled or a small radius filed at the point of the bend.

104. AMP073 AMP

Select a characteristic of a good weld on exhaust stacks.
A) The weld should be built up 1/8 inch.
B) Porousness or projecting globules should show in the weld.
C) The weld should taper off smoothly into the base metal.

105. AMP056 AMP

Dislodged internal muffler baffles on a small reciprocating engine may
A) obstruct the muffler outlet and cause excessive exhaust back pressure.
B) cause the engine to run excessively cool.
C) cause high fuel and oil consumption.

106. AMP056 AMP

Sodium filled valves are advantageous to an aviation engine because they
A) are lighter.
B) dampen valve impact shocks.
C) dissipate heat well.

107. AMP069 AMP

The hot section of a turbine engine is particularly susceptible to which of the following kind of damage?
A) Galling.
B) Pitting.
C) Cracking.

108. AMP071 AMP

The rearward thrust capability of an engine with the thrust reverser system deployed is
A) less than its forward capability.
B) equal to or less than its forward capability, depending on ambient conditions and system design.
C) equal to its forward capability.

109. AMP008 AMP

Which statement is generally true regarding thrust reverser systems?
A) It is possible to move some aircraft backward on the ground using reverse thrust.
B) Engine thrust reversers on the same aircraft usually will not operate independently of each other
(must all be simultaneously).
C) Mechanical blockage system design permits a deployment position aft of the exhaust nozzle only.

110. AMP052 AMP

Which of the following determines oil and grease specifications for lubrication of propellers?
A) Airframe manufacturers.
B) Engine manufacturers.
C) Propeller manufacturers.

111. AMP053 AMP

Propeller blade station numbers increase from
A) hub center line to tip.
B) tip to hub center line.
C) blade shank butt to tip.

112. AMP052 AMP

How can a steel propeller hub be tested for cracks?
A) By anodizing.
B) By magnetic particle inspection.
C) By etching.

113. AMP052 AMP

Inspection of propeller blades by dye-penetrant inspection is accomplished to detect
A) cracks or other defects.
B) corrosion at the blade tip.
C) torsional stress.

114. AMP052 AMP

Which of the following defects is cause for rejection of wood propellers?
A) Solder missing from screw heads securing metal tipping.
B) An oversize hub or bolthole, or elongated boltholes.
C) No protective coating on propeller.

115. AMP053 AMP

The primary purpose of a propeller is to
A) create lift on the fixed airfoils of an aircraft.
B) change engine horsepower to thrust.
C) provide static and dynamic stability of an aircraft in flight.

116. AMP052 AMP

Propellers exposed to salt spray should be flushed with
A) stoddard solvent.
B) fresh water.
C) soapy water.

117. AMP052 AMP

When lubricating a Hartzell propeller blade with grease, to prevent damage to the blade seals, the
service manual may recommend on some models to
A) pump grease into both zerk fittings for the blade simultaneously.
B) remove the seals prior to greasing and reinstall them afterwards.
C) remove one of the two zerk fittings for the blade and grease the blade through the remaining fitting.

118. AMP053 AMP

Ice formation on propellers, when an aircraft is in flight, will
A) decrease thrust and cause excessive vibration.
B) increase aircraft stall speed and increase noise.
C) decrease available engine power.

119. AMP053 AMP

How is anti icing fluid ejected from the slinger ring on a propeller?
A) By pump pressure.
B) By centripetal force.
C) By centrifugal force.

120. AMP053 AMP

How is aircraft electrical power for propeller deicer systems transferred from the engine to the propeller
hub assembly?
A) By slip rings and segment plates.
B) By slip rings and brushes.
C) By flexible electrical connectors.

121. AMP052 AMP

What is the basic purpose of the three small holes (No. 60 drill) in the tipping of wood propeller blades?
A) To provide a means for inserting balancing shot when necessary.
B) To provide a means for periodically impregnating the blade with preservation materials.
C) To allow the moisture which may collect between the tipping and the wood to escape (vent the
tipping).

122. AMP052 AMP

If a flanged propeller shaft has dowel pins
A) install the propeller so that the blades are positioned for hand propping.
B) the propeller can only be installed in a given position.
C) check carefully for front cone bottoming against the pins.

123. AMP052 AMP

Which of the following statements concerning the installation of a new fixed pitch wood propeller is
true?
A) If a separate metal hub is used, final track should be accomplished prior to installing the hub in the
propeller.
B) NAS close tolerance bolts should be used to install the propeller.
C) Inspect the bolts for tightness after the first flight and again after the first 25 hours of flying.

124. AMP053 AMP

How does the propeller overspeed governor on a turboprop engine decrease propeller RPM?
A) By allowing oil to escape from the propeller hub thus driving the blades to a increased blade angle.
B) By increasing oil pressure in the propeller thus driving the blades to a increased blade angle.
C) By reducing fuel flow to the fuel control thus driving the blades to a increased blade angle.

125. AMP052 AMP

After proper removal of aluminum blade damage, the affected surface should be polished with
A) fine steel wool.
B) very fine sandpaper.
C) powdered soapstone.

126. AMP052 AMP

Generally, unless otherwise specified by the manufacturer, repairs of nicks, scratches, gouges, etc. on
aluminum propeller blades must be made
A) parallel to the length of the blade.
B) perpendicular to the blade axis.
C) so as to return the damaged area to the original dimensions.

127. AMP052 AMP

Which of the following methods is used to straighten a bent aluminum propeller blade that is within
repairable limits?
A) Careful heating to accomplish straightening, followed by heat treatment to restore original strength.
B) Cold straightening only.
C) Either hot or cold straightening, depending on the location and severity of damage.

128. AMP052 AMP

Which of the following generally renders an aluminum alloy propeller unrepairable?
A) Any repairs that would require shortening and re-contouring of blades.
B) Any slag inclusions or cold shuts.
C) Transverse cracks of any size.

129. AMP017 AMP

Fuel is normally supplied to an APU from
A) its own independent fuel supply.
B) the airplane's reserve fuel supply.
C) the airplane's main fuel supply.