2A753 Volume 3 Structural Maintenance Journeyman
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- 1.(401) When you are installing aircraft bolts in a panel you place shims under the plate nut?
- A.
Because the grip length of the bolt is slightly greater
- B.
To make the bottom portion of the plate nut stronger
- C.
Because material thickness being bolted together is less than the diameter of the bolt
- D.
Because thread protrusion through the plate nut is more than the required two threads
- 2.(401) How can you avoid stripping threads when installing a nut and bolt?
- A.
Choose the proper nut
- B.
Install washers as necessary.
- C.
Torque the nut to proper specifications
- D.
Ensure the bolt has a proper interference fit
- 3.(402) The fastener removal tool is primarily designed for use on a
- A.
Concave surface
- B.
Convex surface
- C.
Curved surface
- D.
Flat surface
- 4.(402) The most you should turn a screw with a screw punch tool is
- A.
One-eighth (⅛) turn
- B.
One-quarter (¼) turn
- C.
Three-eighths (3/8) turn.
- D.
One-half (½) turn
- 5.(403) What nut style do you use when all bolt hole locations are equally spaced around an opening?
- A.
Point wrenching
- B.
Nut plates
- C.
Channel.
- D.
Barrel.
- 6.(403) Which nut is used where the assembly is frequently removed and you can obtain the desired tightness with your fingers?
- A.
Wing
- B.
Castle
- C.
Plain text
- D.
Catellated shear
- 7.(403) The two major types of self-locking nuts you will install are
- A.
Floating and non floating
- B.
Aluminum and stainless steel
- C.
Interrupted thread and elastic stop
- D.
Prevailing torque and free spinning
- 8.(403) You need to consider heat requirements for which prevailing torque, self-locking nut locking device?
- A.
Slotted or beam
- B.
Nonmetallic insert.
- C.
Deformed thread type
- D.
Interrupted thread type
- 9.(404) When a rigid type camloc receptacle needs to replaced you replace
- A.
It with a rigid receptacle
- B.
It with a floating receptacle
- C.
It with a retaining receptacle
- D.
The entire camloc fastener assembly
- 10.(404) What is the final step that completes a camloc fastener assembly installation?
- A.
Install the receptacle.
- B.
Install the stud retaining ring
- C.
Check the grip length of the stud
- D.
Insert the stud assembly into the grommet
- 11.(405) To properly install a new flush-type airloc turn-lock fastener, the size of the punched hole in the access panel should be
- A.
1/16 inch larger than the stud
- B.
1/16 inch smaller than the stud.
- C.
Equal to the diameter of the stud head.
- D.
Approximately the same size as the diameter of the stud shank.
- 12.(405) What part of an airloc assembly is never reused?
- A.
Grommet.
- B.
Cross-pin.
- C.
Rigid receptacle
- D.
Floating receptacle.
- 13.(406) When drilling holes for fasteners you can maintain proper hole alignment by
- A.
Using a reamer to up size the hole
- B.
Clamping all repair members in place
- C.
Holding the drill at a right angle to the surface
- D.
Pilot drilling holes through all mating surfaces
- 14.(406) How do you drill an interference fit hole for a fastener?
- A.
Use only a reamer to finish the holeburrs.
- B.
Use only a drill bit to drill the hole to size
- C.
Pilot drill the hole and use a reamer to finish
- D.
Pilot drill the hole and use a drill bit to upsize.
- 15.(407) When cold working a hole, which gage is used to verify the hole before and after it’s been cold-worked?
- A.
Final.
- B.
Starting.
- C.
Verification.
- D.
Combination.
- 16.(408) In determining the grip length of a hi-shear rivet, when it is installed in the hole the straight portion of the shank should
- A.
Be flush with the top of the locking collar
- B.
Extend no more than 1/16 inch through the material
- C.
Be flush with the back edge of the material thickness
- D.
Extend at least 1/16 inch beyond the top edge of the locking collar
- 17.(408) When installing hi-shear rivets how do you accomplish proper faying surface “sealant squeeze out”?
- A.
Swaging the collar with an undersized swaging set
- B.
Increasing the hammering force needed to swage the collar
- C.
Installing temporary fasteners in every other hole before installation
- D.
Lightly tapping the hi-shear rivet pin into the hole before swaging the collar
- 18.(407) Cold-working hole expansion is used to prevent
- A.
Burrs.
- B.
Cracks.
- C.
Elongated holes
- D.
Premature fatigue failure
- 19.(409) What is the maximum surface angle on which you can satisfactorily drive a stump lock-bolt collar?
- A.
5° parallel with the axis of the hole.
- B.
7° parallel with the axis of the hole.
- C.
5° perpendicular with the axis of the hole.
- D.
7° perpendicular with the axis of the hole.
- 20.(409) The last step after installing pull-type lock bolts is to
- A.
Inspect the formation of the collar
- B.
Remove the pulling gun from the collar area
- C.
Ensure the end of the pin is flush with the end of the collar
- D.
Apply a corrosion preventative compound to the stem break off area
- 21.(410) What material composition hi-lok fastener is used when the temperature of a certain area of the aircraft exceeds 750°F?
- A.
Inconel
- B.
Titanium alloy
- C.
Corrosion-resistant steel
- D.
High-strength aluminum alloy
- 22.(411) What head marking symbols on the taper-lok pins indicate that it is an injection type?
- A.
The letters IT in front of the TL symbol
- B.
The letters IT before the first dash number.
- C.
Indented slots stamped on the head of the fastener
- D.
The numbers representing the type of sealant required.
- 23.(411) The symbol on the bottom of a taper-lok pin represents the
- A.
Grip length
- B.
Fastener diameter
- C.
Material composition
- D.
Threads per inch on the pin
- 24.(411) The second dash number stamped on the head of a taper-lok fastener pin represents the
- A.
Grip length
- B.
Fastener diameter
- C.
Material composition
- D.
Depth of the injector ports
- 25.(411) What other problem besides centering can you eliminate by using a washer-nut assembly on a taper-lok pin?
- A.
Washer fumbling
- B.
Over torquing the nut
- C.
Corrosion of the mating surface
- D.
Mismatch of the pin and material composition
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