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