Aircraft Finishes Flashcards
What is the purpose of zinc chromate primer.
to provide corrosion resistance
Many of the solvents and thinners used in modern finishing are toxic. What health safety precaution should the mechanic observe?
PPE as prescribed in the MSDS
What are three methods of applying paint?
dipping, brushing, spraying
What is the reason for paint touch up other than appearance?
Corrosion Prevention
What aircraft finishing topcoat material is the most durable and chemical resistant?
polyurethane
If you attempt to spray dope on a wing during conditions of high humidity, what may happen to the finish?
blushing will occur
What is the minimum height for aircraft registration numbers?
12”
When applying dope to a fabric surface, what substance is often mixed in with the first coat, especially if the covering material is cotton or line?
fungicidal additive
If masking tape is applied to an aircraft finish for masking off trim and allowed to remain on the surface for several days and exposed to too much heat, what can happen?
it will cure to the paint and be difficult to remove
What causes runs and sags in an aircraft finish?
too much paint in one area, or too slow gun movement
What are the common types of paint used on aircraft?
enamel, acrylic, polyurethane, acrylic urethane
What is the advantage of using butyrate dope instead of nitrate dope, from a safety point of view?
reduced fire hazard
What happens to paint finishes if excess drier is added to paint?
orange peel, cracking
What are the two types of dope used for aircraft finishes?
butyrate and nitrate
Why should dope not be used over paint or enamel?
dope softens paint and causes loss of adhesion
