aircraft finishes

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

retarder

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 N 1683C?

52 inches

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?

a glossy, blush-free finish

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

avoid touching the surface with bare hands

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

blushing

what is likely 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?

corrosion

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

cure to the finish and be very difficult to remove

Fungicidal dopes are used in aircraft finishing as the

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

Which statement is true regarding paint system compatibility

old wash primer coats may be overcoated directy with epoxy finishes.

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

polyurethane

Aluminum-pigment in dope is used primarily to

reflect ultraviolet from the fabric

A correct use for acetone is to

remove grease from fabric

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

static electricity buildup

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

too much material applied in one coat

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

wash primer