Aircraft Finishes Review Flashcards
How does wash primers improve paint bond?
They contain a phosphoric acid to etch the surface
What is the mixing ratio for Epoxy Primer
1:1
What is the disadvantage of Zinc Chromate and how is it thinned?
It’s thinned with Tolvene
What does the binder do?
The binder holds the pigment in liquid form and gives the pigment the ability to stick to the surface
What has the greatest effect on pressure drop when dealing with compressed air?
The inside diameter of the hose
In Airless Spraying, how is the paint atomized and how is it used on aircraft?
Airless spraying does not directly use compressed air to atomize the paint, hydraulic pressure is used on production work
Regarding Air Spray, how is the paint atomized?
Compressed air is used to atomize the paint
Regarding suction cup guns and gravity feed guns, what are the knobs on the gun control?
Wing port air valve, fluid adjustment valve
What does HVLP stand for?
High Velocity Low Pressure
Regarding gun malfunctions, how do you fix a split spray or hourglass spray pattern?
What pattern do you get with both wing ports clogged?
Circle Pattern
How far should the gun be held from the work? What areas should be painted first?
6-10 inches, cut in edges and difficult areas first
What is the cause of runs and sags?
What is crazing?
Too much paint applied, temperature too cold, the distance & speed
Crazing is micro-cracks of the paint
What causes peeling?
It is caused by improper air pressure
How is wax type chemical paint stripper removed from the aircraft?
Rinse off with water and remove residue with MEK or Acetone
How is wrinkle finish applied?
What are the two types?
How are they used?
It is air dried and oven dried, applied using a heavy coat.
The two types are Bitumastic & Polyurethane
They are used in the Battery Box
What does FAR 45:23 indicate?
Display of marks- what size the marks on the entrance of the cabin, cockpit that display the words “limited”, “Experimental” etc.
Each operator of an aircraft must display on that aircraft marks consisting of the Roman capital letter “N” (denoting United States registration) followed by the registration number of the aircraft. Each suffix letter used in the marks displayed must also be a Roman capital letter.
What does FAR 45:25 indicate?
Locations of marks fixed wing aircraft.
“The operator of a fixed-wing aircraft must display the required marks on either the vertical tail surfaces or the sides of the fuselage, except as provided in § 45.29(f).”
What does FAR 45.27 indicate?
Location of marks non-fixed wing Aircraft
What does FAR 45.29 indicate?
Size of marks - know the rules of marks from glider. You need to know the height, width and spacing rules and how to get overall length needed to fit marks on aircraft.
“Except as provided in paragraph (f) of this section, each operator of an aircraft must display marks on the aircraft meeting the size requirements of this section.”
What does FAR 45.33 indicate?
Sale of aircraft; removal of marks.
“When an aircraft that is registered in the United States is sold, the holder of the Certificate of Aircraft Registration must remove, before its delivery to the purchaser, all United States marks from the aircraft, unless the purchaser is—
(a) A citizen of the United States;
(b) An individual citizen of a foreign country who is lawfully admitted for permanent residence in the United States; or
(c) When the aircraft is to be based and primarily used in the United States, a corporation (other than a corporation which is a citizen of the United States) lawfully organized and doing business under the laws of the United States or any State thereof.”
