Engineering Handbook Series for Aircraft Structural Repair - 1-1A-1

Question 1

__ damage consists of visually apparent, surface damage that does not affect the structural integrity of the component involved.

Answer 1

Negligible

Question 2

Bend lines must be drawn with a nongraphite pencil that conforms with Military Specification __ to avoid galvanic corrosion.

Answer 2

MIL-P-83953

Question 3

Scratches or nicks no deeper that __ percent of the wall thickness on straight sections of aluminum, aluminum alloy, copper, or steel tubing that are not in the heel of a bend may be repaired.

Answer 3

15

Question 4

Any dent that is less than __ percent of the tube diameter is allowable

Answer 4

20

Question 5

All bushings shall be pinned or staked in __

places, approximately 180© apart.

Answer 5

two

Question 6

If the crack extends beyond the stop hole, enlarge the hole by __-inch diametrical increments until the crack indication is removed.

Answer 6

1/16

Question 7

If a prepreg of woven fabric is less than __ inches wide, it is designated as a tape.

Answer 7

12

Question 8

As a rule, a minimum of __ and a maximum of __ complete threads, including the chamfered end, shall protrude through the nut.

Answer 8

two, four

Question 9

The bond area must be __ in size to the strength required of the joint (adhesives)

Answer 9

proportional

Question 10

To determine total bend allowance:

Answer 10

bend allowance for one degree X number of degrees of bend

Question 11

Hand drilling of holes larger than __ inch diameter is not recommended without the use of drilling aids.

Answer 11

0.1875