Aircraft Finishes

Question 1

If registration numbers are to be applied to an aircraft with a letter height of 12 inches, what is the minimum space required for the registration mark N1683C?
Note:
2/3x height = character width
1/6x height = width for 1
1/4 x 2/3 height = spacing
1/6 x height = stroke or line width

Answer 1

52 inches

Question 2

Aluminum-pigment in dope is used permanently to

Answer 2

Reflect ultraviolet from the fabric

Question 3

Which type of coating typically includes phosphoric acid as one of its components at the time of application?

Answer 3

Wash primer

Question 4

Which defect in aircraft finishes may be caused by adverse humidity, drafts, or sudden changes in temperature?

Answer 4

Blushing

Question 5

Which properly applied finish topcoat is the most durable and chemical resistant?

Answer 5

Polyurethane

Question 6

Before applying a protective coating to any unpainted clean aluminum, you should

Answer 6

Avoid touching the surface with bare hands

Question 7

A correct use for acetone is to

Answer 7

Remove grease from fabric

Question 8

What is used to slow the drying time of some finishes and to prevent blush

Answer 8

Retarder

Question 9

Fungicidal dopes are used in aircraft finishing as the

Answer 9

First coat to prevent fabric rotting and are applied thin enough to saturate the fabric

Question 10

If masking tape is applied to an aircraft such as for trim spraying, and is left on for several days and/or exposed to heat, it is likely that the tape will

Answer 10

Cure to the finish and be very difficult to remove

Question 11

What is likely to occur if hydrated wash primer is applied to unpainted aluminum and then about 30 to 40 minutes later a finish topcoat, when the humidity is low?

Answer 11

A glossy, blush-free finish

Question 12

Which statement is true regarding paint system compatibility?

Answer 12

Old wash primer coats may be over-coated directly with epoxy finishes.

Question 13

What is the usual cause of runs and sags in aircraft finishes?

Answer 13

Too much material applied in one coat.

Question 14

What is likely to occur if unhydrated wash primer is applied to unpainted aluminum and then about 30 to 40 minutes later a finish topcoat, when the humidity is low?

Answer 14

Corrosion

Question 15

Which of the following is a hazard associated with sanding on fabric covered surfaces during the finishing process?

Answer 15

Static electricity buildup