13-26.
When several replacement parts
need to be fabricated, which of
the following items should you use
to speed production time and
ensure a high degree of
uniformity?
1.
Designs
2.
Drawings
3.
Templates
4.
Blueprints
13-27.
A skin repair to a semicritical
area of an aircraft requires what
percentage of the damaged area’s
original strength to be replaced?
50%
60%
70%
80%
13-28.
The edges of a lap patch are
normally chamfered to what degree
of angle?
1.
45°
2.
49°
3.
55°
4.
63°
13-29.
Generally, when fabricating a
flush patch, you should have what
maximum clearance between the skin
and the filler?
1.
1/4 in.
2.
1/8 in.
3.
1/16 in.
4.
1/32 in.
13-30.
When performing a flush access
door installation to attach the
cover plate to the doubler, you
should use what type of fasteners?
1.
Rivnuts
2.
Hi-lok rivets
3.
Machine screws
4.
Flush head jo-bolts
13-31.
When an aircraft skin is being
replaced without the use of a
template, which of the following
methods of marking the new skin
should NOT be used to duplicate
the rivet holes in the old
section?
1.
A scriber
2.
A hole finder
3.
A soft pencil
4.
A transfer punch and hammer
IN ANSWERING QUESTION 13-32, REFER TO
FIGURE 13-67 IN THE TEXTBOOK.
13-32.
What is the minimum length for the
reinforced splice?
1.
Four times the length of the
leg of the stringer for each
side of the damaged area
2.
Four times the width of the
leg of the stringer for each
side of the damaged area
3.
Two times the length of the
filler splice
4.
Two times the width of the
filler splice
13-33.
What structures serve to transmit
stresses from the aircraft’s skin
and are used to give shape and
rigidity?
Ribs
Spars
Bulkheads
Stringers
13-34.
For aircraft applications, all
EXCEPT which of the following
features is an advantage of
plastic over glass?
1.
Its ease of repair
2.
Its ease of fabrication
3.
Its lightness in weight
4.
Its ability to resist
scratches
13-35.
What term refers to small surface
fissures that develop on plastic
materials?
Hazing
Glazing
Crazing
Cracking
13-36.
Upon finding a section of plastic
material that is crazed, what
action, if any, should you take to
correct the problem?
1.
Buff it with polish
2.
Wipe it with naphtha
3.
Rub it with turpentine
4.
None
13-37.
By sanding or buffing a plastic
surface too long or too vigorously
in one spot, you can cause which
of the following problems?
1.
Cracking or crazing
2.
Softening or burning
3.
Bleaching or glazing
4.
Discoloration or hazing
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