2A654 Volume 3
Volume three of the Air Force's aircraft fuel systems journeyman course
- 1.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.In what type of aircraft fuselage construction does weight become a problem?
- A.
Truss
- B.
Cantilever
- C.
Monocoque
- D.
Semimonocoque
- 3.Which assembly includes the aft end of the fuselage of conventionally designed aircraft?
- A.
Fairing
- B.
Ailerons
- C.
Empennage
- D.
Trailing edge
- 4.Which flight control surface controls the directional movement about the axis of an aircraft?
- A.
Critical
- B.
Primary
- C.
Auxiliary
- D.
Secondary
- 5.Which of the following are examples of secondary flight controls?
- A.
Ailerons
- B.
Rudders
- C.
Trim tabs
- D.
Elevators
- 6.Which situation describes an ideal installation of a bolt on an aircraft component?
- A.
The grip length of the bolt is slightly shorter than the thickness of the materials being joined.
- B.
The grip length of the bolt is the same as the thickness of the materials being joined.
- C.
The grip length of the bolt is is slightly longer than the thickness of the materials being joined.
- D.
The grip length of the bolt is much longer than the thickness of the materials being joined.
- 7.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.For which of the following aircraft applications 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
- 9.What item of hardware should be installed with scrrews and bolts whenever the self-locking or castellated nut is not used?
- A.
Cotter pins
- B.
Safety wire
- C.
Lockwashers
- D.
Plain washers
- 10.Which type of rivet is used on the top skin surface of an aircraft?
- A.
Flathead
- B.
Countersunk
- C.
Roundhead
- D.
Brazier head
- 11.What type of fastener is installed in an integral tank where access to only one side of the work is possible?
- A.
Brazier head rivet
- B.
Nut and bolt
- C.
Jo-bolt
- D.
Hi-lok
- 12.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.For what reason is aluminum alloy tubing the most widely used?
- A.
It can withstand high pressures
- B.
It is easily flared with hand tools
- C.
It is generally heavier than other types
- D.
It resists dents better than other types
- 14.What condition will likely result from the contact of tubing with a surrounding surface?
- A.
Galling
- B.
Chafing
- C.
Scratching
- D.
Delamination
- 15.Which type of tubing defect would be considered acceptable?
- A.
A dent measuring 35% of the tubing diameter
- B.
A scratch that measures 25% of the tubing wall thickness
- C.
Several nicks measuring 15% of the tubing wall thickness
- D.
A dent on the heel of a bend with less than the recommended radius
- 16.Which type of hose is a medium pressure Teflon hose with an operating temperature of 65 to 450* F?
- A.
MIL-H-8794
- B.
MIL-H-7938
- C.
MIL-H-7061
- D.
MIL-H-27267
- 17.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
- 18.What type of manifold coupling consists of a body, nut, split washers, o-rings, and a retainer?
- A.
V-band
- B.
Wiggins
- C.
Pneumatic
- D.
Quick-disconnect
- 19.What part of a Wiggins coupling provides the sealing action?
- A.
O-ring
- B.
Gasket
- C.
Snap ring
- D.
Split washer
- 20.What minimum diameter safety wire should be installed on bolts having a .050-inch drilled hole?
- A.
.020
- B.
.028
- C.
.032
- D.
.045
- 21.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
- 22.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 or one mil. What degree of corrosion has taken place?
- A.
Light
- B.
Severe
- C.
Moderate
- D.
Intermediate
- 23.Moderate corrosion is normally removed from an aircraft surface by
- A.
Light hand scrubbing
- B.
Scrubbing with steel wool
- C.
Light mechanical sanding
- D.
Brushing with a steel wire brush
- 24.The extent of corrosion on an aircraft surface depends on which of the following factors?
- A.
The methods used to wash or clean the area
- B.
The type of metal affected by the corrosion
- C.
The ambient temperature at which the aircraft is located
- D.
The length of time electrolytes are in contact with the metals
- 25.Which area may be a prime location for fungus growth because of condensational buildup?
- A.
Fuel manifold
- B.
Landing area
- C.
Integral tank
- D.
Exhaust ducting
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