Aircraft Volume 3 Unit Review Exercises
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- 1.1. (401) What type of fuselage construction uses a fabric or thin metal covering, and may be found on small, lightweight aircraft?
- A.
Truss.
- B.
Cantilever.
- C.
Monocoque.
- D.
Semimonocoque
- 2.2. (401) The primary structural components of an aircraft wing include the spars, ribs, and
- A.
Skin.
- B.
Stringers.
- C.
Empennage.
- D.
Trailing edge.
- 3.3. (401) Which assembly includes the aft end of the fuselage of conventionally designed aircraft?
- A.
Fairing.
- B.
Ailerons.
- C.
Empennage.
- D.
Trailing edge.
- 4.4. (402) Which of the following are examples of secondary flight controls?
- A.
Ailerons.
- B.
Rudders.
- C.
Trim tabs.
- D.
Elevators.
- 5.5. (403) Low observable (LO) technology allows modern aircraft to avoid
- A.
Enemy aircraft.
- B.
Enemy radar.
- C.
Friendly forces.
- D.
Night flying incidents.
- 6.6. (404) The situation that describes an ideal installation of a bolt on an aircraft component is the grip length of the bolt is
- A.
Slightly shorter than the thickness of the materials being joined.
- B.
The same as the thickness of the materials being joined.
- C.
Slightly longer than the materials being joined.
- D.
Much longer than the materials being joined.
- 7.7. (404) The size of a bolt is generally stated in terms of its
- A.
Weight, diameter, and head size.
- B.
Head size, grip length, and weight.
- C.
Length, weight, and threads per inch.
- D.
Diameter, length, and threads per inch.
- 8.8. (404) What type of bolt is used where standard-type bolt is impractical?
- A.
Clevis.
- B.
Eyebolt.
- C.
Twelve point.
- D.
Stud.
- 9.9. (405) For which aircraft application should a self-locking nut not be installed?
- A.
Attachment of a pulley.
- B.
Attachment of an antifriction bearing.
- C.
Mounting an accessory near the engine.
- D.
Connecting sections of a movable joint.
- 10.10. (406) Which type of rivet is used on the top skin surface of an aircraft?
- A.
Flathead.
- B.
Countersunk.
- C.
Roundhead.
- D.
Brazier head.
- 11.11. (406) Which is a feature of the hi-lok type of fastener?
- A.
It is a single-part fastener
- B.
It can easily be overtorqued.
- C.
It can be installed with hand tools.
- D.
It is a low-strength threaded fastener.
- 12.12. (407) What type of tubing is used in high-pressure systems such as the landing gear system?
- A.
Copper.
- B.
Stainless steel.
- C.
Titanium alloy.
- D.
Aluminum alloy.
- 13.13. (408) Flexible hose is used in areas of the aircraft
- A.
Which are subject to great amount of vibration.
- B.
Which are not subject to vibration.
- C.
Where flexibility is not required.
- D.
Where rigidity is required.
- 14.14. (408) Which example is not acceptable regarding the installation of a flexible hose assembly?
- A.
Use oil to aid the installation of a self-sealing hose.
- B.
Install the hose so that it will not be subjected to twisting.
- C.
Ensure clamps are not so tight that they restrict flow.
- D.
Support the hose at least every 24 inches of length.
- 15.16. (410) What is the maximum number of widely-spaced bolts that may be safety-wired together using the double-twist method?
- A.
2.
- B.
3.
- C.
4.
- D.
5.
- 16.15. (409) What is the first step when removing a V-band type coupling?
- A.
Remove the nut.
- B.
Cut the safety wire.
- C.
Remove the snap rings.
- D.
Pull back on the.
- 17.17. (410) What minimum diameter safety wire should be installed on bolts having a .050-inch drilled hole?
- A.
.020-inch.
- B.
.028-inch.
- C.
.032-inch.
- D.
.045-inch
- 18.18. (411) Why is the use of cotter pins on aircraft systems favorable?
- A.
They can be reused after removal.
- B.
They are stronger than safety wire.
- C.
They are less expensive than other pins.
- D.
They can be removed and installed quickly.
- 19.19. (412) During an integral tank inspection, you discover an area at which the protective coating is scarred and the metal is discolored. Pitting has also occurred to a depth of one mil (0.001 inch). What degree of corrosion has taken place?
- A.
Light.
- B.
Severe.
- C.
Moderate.
- D.
Intermediate.
- 20.20. (413) When installing removable screws and bolts, what portion is coated with sealant?
- A.
Install only nonmetal hardware and clamps.
- B.
Spray all metal surfaces to be installed with SAE–10 oil.
- C.
Paint all exposed metal on the clamp and attaching hardware.
- D.
Coat the lower side of the heads of screws and bolts with sealant.
- 21.21. (414) What types of hammers are used in fuel systems maintenance?
- A.
Mallets and claw hammers.
- B.
Claw and ball-peen hammers.
- C.
Soft-faced mallets and ball-peen hammers.
- D.
Mallets and plastic-face hammers.
- 22.22. (414) Which type of wrench should you use to tighten an internal wrenching nut?
- A.
Adjustable jaw.
- B.
Recessed.
- C.
Socket.
- D.
Allen.
- 23.23. (415) What should you use to clean tools that are extremely greasy and grimy?
- A.
JP–4 or gasoline.
- B.
Approved cleaning solvent.
- C.
Methyl ethyl ketone (MEK).
- D.
Aluminum oxide abrasive cloth.
- 24.24. (416) How many foot-pounds of torque are produced by 120 inch-pounds of force on a breakaway-type torque wrench?
- A.
10.
- B.
12.
- C.
20.
- D.
60.
- 25.25. (417) What powered tool would you use to remove access door screws?
- A.
Impact wrench.
- B.
Speed handle.
- C.
Air hammer.
- D.
Electric drill with adapter.
- 26.26. (417) Which tool would you use to repair a fuel cell fitting?
- A.
Air chisel.
- B.
Bench grinder.
- C.
Torque wrench.
- D.
Pneumatic buffer.
- 27.27. (417) Which type of attachment should you use on the fuel cell pneumatic buffer to buff bladder cells and flanges?
- A.
Buffing arbor.
- B.
Buffing pad.
- C.
Buffing band.
- D.
Buffing stone.
- 28.28. (418) The ratio of output pressure to input pressure of a two-part sealant high-pressure injection gun is
- A.
10 to 1.
- B.
25 to 1.
- C.
50 to 1.
- D.
125 to 1.
- 29.29. (419) After you are finished using the sealant filleting gun, what must be done?
- A.
Discard the residual sealant
- B.
Clean the residual sealant.
- C.
Replace the cartridge.
- D.
Turn the gun off.
- 30.30. (420) The one-part sealant injection gun is used to inject sealant into
- A.
Prepacks.
- B.
Loose rivet holes.
- C.
Voids inside the tank.
- D.
Channels under the wing skin.
- 31.31. (421) What will happen to an air hose if you run it over with heavy equipment?
- A.
It will rupture.
- B.
It will roll and become twisted.
- C.
It will get dirty.
- D.
Nothing, hoses are very strong
- 32.32. (422) When using the electric knife to cut foam, which do you not inspect?
- A.
Cut wires.
- B.
Motor speed.
- C.
Blade installation.
- D.
Cracks in body.
- 33.33. (423) When you use the water manometer, you should
- A.
Relieve tank pressure by disconnecting the manometer hose.
- B.
Ensure that the manometer safety relief valves are calibrated.
- C.
Unplug the negative pressure connection when the fuel tank is given a positive test.
- D.
Ensure the positive pressure connection is plugged when the fuel tank is under negative pressure.
- 34.34. (424) What is the preferred piece of equipment for monitoring fuel tanks?
- A.
Combustible gas indicator.
- B.
Combustible gas alarm.
- C.
Bachrach 514.
- D.
Photo-ionization detector (PID).
- 35.35. (425) The Model T477W bonding meter is designed to measure
- A.
Voltage.
- B.
Resistance.
- C.
Wattage.
- D.
Amperage.
- 36.36. (425) You turn on the display on the T477W bonding meter by pressing the
- A.
TEST button.
- B.
START button.
- C.
ILLUMINATE button.
- D.
LIGHT button.
- 37.37. (425) All values displayed on the T477W Bonding meter are in
- A.
Ohms.
- B.
Milliohms.
- C.
Volts.
- D.
Millivolts.
- 38.38. (426) What support equipment item is designed to operate pneumatic tools at a maximum air pressure of 200 pounds per square inch (psi)?
- A.
MC–1A.
- B.
MC–2A.
- C.
MD–1.
- D.
MD–2.
- 39.39. (426) Which is a feature of the MC–7 Air compressor?
- A.
Capable of delivering high volumes of air
- B.
Delivers a maximum pressure of 200 psi.
- C.
Can be used as a source of breathing air.
- D.
Gas engine will run for one hour without refueling.
- 40.40. (427) Which is an inspection requirement on the pneumatic vacuum?
- A.
Bleed of air pressure in tank.
- B.
Document tire pressure.
- C.
Look for fuel leaks.
- D.
Document temporary repairs.
- 41.41. (428) Which two buttons must you press to start the HDU–13/M heater?
- A.
Blower and heater.
- B.
Start and heater.
- C.
Blower and start.
- D.
Bypass and ignite.
- 42.42. (428) Which heater is not explosion proof and must be kept outside the repair area?
- A.
RCD.
- B.
MC–1.
- C.
HDU–13/M.
- D.
H–1.
- 43.43. (429) If you are using a pneumatic powered blower, the maximum pressure on the pressure gauge should be
- A.
14 pounds per square inch (psi).
- B.
24 psi.
- C.
34 psi.
- D.
44 psi.
- 44.44. (429) An equipment item that is not permitted inside the fuel systems repair area is the
- A.
Rhine air fan.
- B.
Air conditioner.
- C.
Pneumatic blower.
- D.
Fuel cell servicing cart.
- 45.45. (430) Where should you position the fuel cell/tank servicing cart?
- A.
Near the MA–1 blower.
- B.
Beside the HDU/13 heater.
- C.
Inside the fuel system repair area.
- D.
At least 10 feet from any vent or other tank opening.
- 46.46. (430) When must you station a safety guard at the fuel cell/tank servicing cart?
- A.
Anytime the cart is in the repair area.
- B.
Each time the air supply system is used.
- C.
During access door removal and cell/tank purging.
- D.
Whenever two or more personnel are using respirators.
- 47.47. (431) Which support equipment item is equipped with a 110 volts alternating current (VAC) power receptacle to permit the use of electrical equipment outside the repair area?
- A.
NF–2 Light-all.
- B.
MB–2 Nitrogen cart.
- C.
Diesel generator.
- D.
HDU–13/M heater.
- 48.48. (432) Which maintenance stand is not adjustable?
- A.
B–1.
- B.
B–2.
- C.
B–5.
- D.
C–1.
- 49.49. (432) Which maintenance stand can you easily move by yourself?
- A.
B–1.
- B.
B–2.
- C.
C–1.
- D.
Manlift.
- 50.50. (432) Maintenance stands used specifically for fuel systems maintenance should be equipped with
- A.
Static discharge plates.
- B.
Static discharge plates and handrail steps.
- C.
Wheel locks and bonding wire reels.
- D.
Handrail steps and wheel locks.
- 51.51. (433) In a new facility, emergency personnel showers must
- A.
Be located in bathrooms.
- B.
Have privacy enclosure.
- C.
Have male and female showers.
- D.
Be within 25 feet of the repair area.
- 52.52. (433) What type scrub sinks is required in existing fuel system facilities?
- A.
Hands-free type.
- B.
Contaminate free type.
- C.
Stainless steel surgical.
- D.
Rinse free cycle with hot water.
- 53.53. (433) Aircraft which are adjacent to an open fuel systems repair area must not be operated under their own power within
- A.
50 feet.
- B.
100 feet.
- C.
150 feet.
- D.
200 feet.
- 54.54. (434) What outside agency must be notified prior to opening fuel tanks?
- A.
Civil Engineering.
- B.
Bioenvironmental Engineering Services.
- C.
Fire Protection Services.
- D.
Wing Safety.
- 55.55. (435) Who is responsible for evaluating industrial ventilation systems?
- A.
Flight chief.
- B.
Section chief.
- C.
Fire Protection Services.
- D.
Bioenvironmental Engineering Flight.
- 56.56. (435) When filling out an AFTO Form 1492, Warning Tag, who is required to sign the signature block?
- A.
Any SSgt.
- B.
RED X qualified supervisor.
- C.
Tool room personnel.
- D.
Most qualified 5-level.
- 57.57. (436) The minimum safe distance between an aircraft using full powered radar and the fuel system repair area is
- A.
100 feet.
- B.
200 feet.
- C.
300 feet.
- D.
400 feet.
- 58.58. (437) What type of wheels must be installed on rolling support equipment used in the fuel systems repair area?
- A.
Non-spark producing metal.
- B.
Aluminum composite.
- C.
Antistatic, nonmetal.
- D.
Antistatic intrinsically safe metal.
- 59.59. (437) When tasked to set up the open repair area, where must you place the powered support equipment?
- A.
Within 25 feet of the ropes.
- B.
Outside the 25 foot marked area.
- C.
Outside the 50 foot marked area.
- D.
Inside the 50 foot marked area.
- 60.(437) An air compressor operating outside the fuel systems repair area
- A.
Must be bonded
- B.
Must be grounded.
- C.
Must be grounded and bonded.
- D.
Does not require grounding or bonding.
- 61.61. (438) Who designates the Alternate Entry Authority for a fuel shop?
- A.
Entry Authority.
- B.
Ground Safety personnel.
- C.
Maintenance Group commander.
- D.
Maintenance superintendent.
- 62.62. (438) Which is the most important role when serving as an attendant?
- A.
Recognizing symptoms of over exposure.
- B.
Ensuring the entrant has the proper hand tools.
- C.
Contacting the wing safety office.
- D.
Notifying bioenvironmental after taking tank readings
- 63.63. (439) Who must be identified on the emergency response plan as being authorized to attempt initial removal of incapacitated entrants?
- A.
Authorized attendant only.
- B.
Authorized runner/equipment monitor only.
- C.
Authorized attendant or tank entry chief.
- D.
Authorized attendant or runner/equipment monitor.
- 64.64. (440) Which task would be considered a change to the entry permit?
- A.
The task takes a few days longer than expected.
- B.
Authorized chemicals are brought into the tank.
- C.
The aircraft is moved from one repair location to another.
- D.
Previously permitted personnel require re-entry into the tank.
- 65.65. (441) What must you do when you are draining fuel into a metallic container?
- A.
Bond container to aircraft.
- B.
Place container on the ground.
- C.
Ensure all facility doors are opened.
- D.
Place several pieces of absorbent mat on the ground.
- 66.66. (442) What is the recommended method of purging an aircraft fuel tank?
- A.
Blow purge.
- B.
Fluid purge.
- C.
Exhaust purge.
- D.
Combination purge.
- 67.67. (443) When removing fire suppression foam from an aircraft fuel tank, you should
- A.
Wear a half-face respirator.
- B.
Remove it as quickly as possible
- C.
Wear chemical-resistant gloves.
- D.
Tear it as evenly as possible.
- 68.68. (443) Foam removed from a fuel tank may be stored in an
- A.
Enclosed metal shed.
- B.
Open metal container.
- C.
Electro-static-free plastic bag
- D.
Vented rubber container
- 69.69. (443) If you were planning to cut small quantities of replacement foam for a fuel tank, you would use
- A.
An Ontario knife.
- B.
A razor blade.
- C.
A hacksaw
- D.
A stitcher.
- 70.70. (444) If you are performing the task of depuddling, which do you use to remove the fuel?
- A.
Sump pump.
- B.
Absorbent cloth.
- C.
Wet-or-dry vacuum.
- D.
Venturi air mover.
- 71.71. (445) The structural components that form the end boundaries of an integral tank are the
- A.
Ribs.
- B.
Spars.
- C.
Stringers.
- D.
Stiffeners.
- 72.72. (446) The three approved methods for locating a fuel leak exit point on an integral tank are
- A.
Vacuum bubble, blowback, and talcum powder.
- B.
Talcum powder, pressure test, and vacuum bubble.
- C.
Leak detection powder, pressure test, and gas detection.
- D.
Pressure test, vacuum bubble, and gas detection.
- 73.73. (447) You have a Class “D” running leak in an external location. Which step is appropriate?
- A.
Repair to no leakage or condition 1 or 2.
- B.
Permanently ground the aircraft.
- C.
Do not repair by applying temporary repair procedures.
- D.
No repair or documentation is required.
- 74.74. (447) What factor(s) determine the appropriate condition/action of an integral tank fuel leak?
- A.
Location.
- B.
Classification.
- C.
Classification and location.
- D.
Location and repair required.
- 75.75. (448) What type of illustration (view) of the structure should be drawn to aid in locating a seal plane?
- A.
Top.
- B.
Inside.
- C.
Horizontal.
- D.
Cross-sectional.
- 76.76. (448) After you have found the exact leak exit point, what is the next step prior to repairing the fuel leak?
- A.
Find the leak source.
- B.
Apply a permanent repair.
- C.
Return aircraft to service.
- D.
Remove defective sealant.
- 77.77. (449) When should the hollow bolt dye injector method be used to isolate a leak source in an integral tank?
- A.
When the double cup assembly was unsuccessful.
- B.
When the leak is at a common tank boundary.
- C.
Any time the leak is larger than Class A.
- D.
In conjunction with the pressure box.
- 78.78. (450) What are the two parts of curing type sealant?
- A.
Base and compound.
- B.
Base and accelerator.
- C.
Accelerator and compound
- D.
Accelerator and petrolatum.
- 79.79. (451) Which basic type of access door opens into the fuel tank, providing a tighter seal than other types?
- A.
Plug.
- B.
O-ring.
- C.
Direct seal.
- D.
Interference fit.
- 80.80. (452) After the defective sealant has been removed, how far from the ends of the fillet should you abrade to prepare the surface for the new fillet?
- A.
1/4 inch.
- B.
1/2 inch.
- C.
3/4 inch.
- D.
1 inch.
- 81.81. (453) A brush coat of sealant should be applied with
- A.
A spatula.
- B.
An acid brush.
- C.
A paint brush.
- D.
A fairing tool.
- 82.82. (453) A large fillet is defined as any fillet
- A.
Less than a half inch.
- B.
Greater than a half inch.
- C.
Less than a quarter inch.
- D.
Greater than three quarters inch.
- 83.83. (454) When injecting using high pressure injection gun, which step will protect the aircraft structure?
- A.
Appling a temporary repair.
- B.
Removing only one screw.
- C.
Providing an air escape.
- D.
Using a low pressure injection gun.
- 84.84. (455) The initial shelf life of a sealant material has expired. The sealant has been tested and has been found to be serviceable. The shelf life may now be updated
- A.
1 month.
- B.
3 months.
- C.
6 months.
- D.
12 months.
- 85.85. (456) Which tool should you use to remove a repair done with Hardman epoxy?
- A.
Plastic scraper and needle-nose pliers.
- B.
Aluminum scraper and needle-nose pliers.
- C.
Heat gun and steel scraper.
- D.
Chisel and rubber mallet.
- 86.86. (457) The ply of a self-sealing cell that contains the fuel is the
- A.
Retainer.
- B.
Buna gum.
- C.
Nylon barrier.
- D.
Sealant layer.
- 87.87. (458) The fuel cell is plasticized prior to storage in order to
- A.
Keep cell walls clean.
- B.
Prevent cracking and drying.
- C.
Prevent cell material from hardening.
- D.
Make the cell more resistant to temperature changes.
- 88.88. (459) Never attempt to fold, unfold, or flex a bladder cell if the cell temperature is below
- A.
50F.
- B.
55F
- C.
60F.
- D.
65F
- 89.89. (459) What is the maximum length of time you should allow a self-sealing fuel cell to remain collapsed?
- A.
1 hour.
- B.
2 hours.
- C.
3 hours.
- D.
4 hours.
- 90.90. (460) Which condition will likely result in a fuel cell fitting leak?
- A.
Installing a used but serviceable o-ring.
- B.
Petrolatum on the surface of an o-ring.
- C.
Hair or lint between an o-ring and its groove.
- D.
Applying torque to fitting bolts after installation.
- 91.91. (460) Vithane cells which have been in storage for a long time in a dry climate will tend to
- A.
Melt.
- B.
Shrink.
- C.
Expand.
- D.
Grow fungus.
- 92.92. (461) What is the most important factor in isolating a fuel cell leak?
- A.
The size of the fuel leak.
- B.
Knowledge of the cavity drain system.
- C.
Whether or not the cell is a bladder type.
- D.
The construction of a cross-sectional view.
- 93.93. (462) Which discrepancy would likely result in a fast and severe type of fuel cell leak?
- A.
Pinhole.
- B.
Delamination.
- C.
Loose cell fitting bolt.
- D.
Loose interconnect fitting.
- 94.94. (463) Which cell repair is best performed at depot or contractor facilities?
- A.
Corner repairs.
- B.
Blister repairs.
- C.
Corrosion treatment.
- D.
Loose seams or patches
- 95.95. (463) Which cell repair is best performed at field level?
- A.
Corner repairs.
- B.
Fitting repairs.
- C.
Repair of loose patches.
- D.
Self-sealing cell repairs.
- 96.96. (464) The inside patch required to repair a hole in a bladder cell must be cut
- A.
1 ½ inches in diameter.
- B.
3 ¼ inches in diameter.
- C.
3 ½ inches in diameter.
- D.
4 inches in diameter.
- 97.97. (465) The curing temperature for the heating element used in the vulcanizing repair method is
- A.
160 ± 10°F.
- B.
230 ± 10°F.
- C.
290 ± 10°F.
- D.
350 ± 10°F.
- 98.98. (466) You have removed a fuel cell and during the inspection have found a defect, what should you do next?
- A.
Pressurize the cell to check for leaks.
- B.
Refer to applicable TO for allowable limits.
- C.
Condemn the cell and order a new one.
- D.
Ignore the damage and reinstall it.
- 99.99. (467) Which does not subject the exterior of the fuel cell to damage?
- A.
Handling.
- B.
Shipping.
- C.
Removal.
- D.
Components.
- 100.100. (468) Cells up to 1000 gallons can be pressurized up to
- A.
¼ pounds per square inch (psi).
- B.
½ psi.
- C.
¾ psi.
- D.
1 psi.
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