ACM-125 FINAL EXAM

Question 1

What is the standard aircraft wood?

Answer 1

Sitka Spruce

Question 2

What are the 2 most common types of plywood?

Answer 2

Mohogany
Birch

Question 3

What is the highest quality fabric test?

Answer 3

Pull test or grab test

Question 4

Is fungacide required on cotton & polyester?

Answer 4

Yes

Question 5

Another name for a punch tester?

Answer 5

Seyboth Tester

Question 6

What is the selvage edge of a fabric?

Answer 6

tightly woven edge parallel to warp direction

Question 7

What is the warp of threads?

Answer 7

runs the length of fabric as it comes off the roll or bolt
0°

Question 8

What must you do with glue whose pot life has expired?

Answer 8

throw away

Question 9

How do you shrink polyester fabric?

Answer 9

heat

Question 10

What type of spar carries the greatest load?

Answer 10

built up box

Question 11

What area of the wing is the most susceptable to wood rot?

Answer 11

trailing edge

Question 12

What is open assembly time?

Answer 12

Allowable time between application of the glue and the time joint is assembled

Question 13

What area of the wood spar may not be spliced?

Answer 13

Engine mount
Landing gear
Wing attachment

Question 14

When are mineral streaks acceptable?

Answer 14

as long as there are no signs of decay

Question 15

Why are fungacidal dopes used in aircraft finishing?

Answer 15

no organic growth

Question 16

What is the minimum # of plywoods allowed in aircraft grade plywood?

Answer 16

3

Question 17

The strength of a well designed and properly prepared glue splice job depends on _____?

Answer 17

glue

Question 18

What finishing dope is considered the safest as far as flammability?

Answer 18

butyrate

Question 19

How do you shrink cotton, linen?

Answer 19

dope

Question 20

Why should you not lay an aluminum wing on concrete?

Answer 20

lime in the cement will accelerate corrosion

Question 21

Reinforcing tape applied to cap strips should be no wider than what?

Answer 21

the width of the cap strip

Question 22

What is slipstream?

Answer 22

prop + 1 rib on each side

Question 23

Once you install fabric what is the maximum time until the 1st application of dope?

Answer 23

48 hours

Question 24

The use of synthetic fabric used to replace cotton material is made from what?

Answer 24

Polyester

Question 25

What is pinked? What does it prevent

Answer 25

serrated cut continuous thread from pulling out if the edge of the tape becomes loose?

Question 26

What is the purpose of finish tape?

Answer 26

1. smoother surface finish. 2. Prevents covering material from coming loose in airstream during flight.

Question 27

What defect may be caused by moisture in the air supply line?

Answer 27

blushing

Question 28

What is the most durable type of finish?

Answer 28

polyurethane

Question 29

What is the purpose of aluminum pigment?

Answer 29

reflect sunlight

Question 30

How long after painting a polyurethane finish can you tape?

Answer 30

5 hours

Question 31

Spray pattern is controlled by how?

Answer 31

wingports perpendicular to direction of spray

Question 32

How much overlap should you have when spraying

Answer 32

2/3

Question 33

Why is nitrate preferred for the first coat?

Answer 33

bonds to fibers of fabric and to structure

Question 34

Where would you find the required size for registration #s?

Answer 34

CFR 14.45

Question 35

ACM-125 Question #32

Answer 35

C

Question 36

ACM-125 Question #37

Answer 36

C

Question 37

ACM-125 Question #39

Answer 37

C

Question 38

ACM-125 Question #42

Answer 38

A