ASA Aircraft Finish, AMT Airframe QUESTIONS WITH COMPLETE SOLUTIONS

1 (8026) - 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:2/3 x height = character width.1/6 x height = width for 1.1/4 x 2/3 height = spacing.1/6 x height = stroke or line width. Correct Answer: A- 52 inches. 2 (8027) - 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 Correct Answer: C- cure to the finish and be very difficult to remove. 3 (8028) - What is used to slow the drying time of some finishes and to prevent blush? Correct Answer: B- Retarder. 4 (8029) - Which type of coating typically includes phosphoric acid as one of its components at the time of application? Correct Answer: A- Wash primer. 5 (8030) - Which properly applied finish topcoat is the most durable and chemical resistant? Correct Answer: C- Polyurethane. 6 (8031) - Aluminum-pigment in dope is used primarily to Correct Answer: C- reflect ultraviolet from the fabric. 7 (8032) - A correct use for acetone is to Correct Answer: B- remove grease from fabric. 8 (8033) - Which of the following is a hazard associated with sanding on fabric covered surfaces during the finishing process? Correct Answer: B- Static electricity buildup. 9 (8034) - 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? Correct Answer: A- Corrosion. 10 (8035) - Fungicidal dopes are used in aircraft finishing as the Correct Answer: B- first coat to prevent fabric rotting and are applied thin enough to saturate the fabric. 11 (8036) - Before applying a protective coating to any unpainted clean aluminum, you should Correct Answer: C- avoid touching the surface with bare hands. 12 (8037) - 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? Correct Answer: B- A glossy, blush-free finish. 13 (8038) - What is the usual cause of runs and sags in aircraft finishes? Correct Answer: A- Too much material applied in one coat.