Flashcards on Aircraft Fabric Covering and Maintenance
Aircraft Fabric Covering and Maintenance: Your Essential Guide
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Fabric-covered Aircraft Maintenance
13 cards
Card 1
Question: When is the finishing tape applied to a fabric-covered wing during recovery?
Answer: After the second coat of dope has dried and the nap of the fabric has been sanded off.
Card 2
Question: What repair is recommended for an L-shaped tear in fabric where each leg is more than 14 inches long?
Answer: If the aircraft's never-exceed speed is less than 150 mph, a doped-on repair can be made.
Card 3
Question: What hand-sewing stitch is used when sewing in a new fabric panel on a fabric-covered wing?
Answer: A baseball stitch locked every eight to ten stitches.
Card 4
Question: To what minimum strength may aircraft fabric deteriorate before the aircraft is considered unairworthy?
Answer: Fabric can deteriorate to 70 percent of the strength required for the aircraft.
Card 5
Question: What is an anti-tear strip and when is it required?
Answer: A strip of the same fabric laid over the rib between the reinforcing tape and the fabric; required for aircraft with a never-exceed speed over 250 mph
Card 6
Question: Where are drainage grommets located on a fabric-covered wing?
Answer: At the lowest point in each bay—customarily on each side of a wing rib, on the underside of the wing, at the trailing edge.
Card 7
Question: How is the strength of fabric on an aircraft structure determined?
Answer: Approximate test with an FAA-approved fabric punch tester; definitive test is pull-testing a one-inch-wide sample.
Card 8
Question: Why are some structural areas dope-proofed before covering with fabric?
Answer: Dope proofing prevents the fabric from sticking to the structure when the first coat of dope is applied, since fabric may sag and touch the structure
Card 9
Question: What is added to the first coat of dope on cotton and linen fabric, and why?
Answer: A mildewcide is mixed into the first coat to protect the fabric from mildew.
Card 10
Question: How is polyester synthetic fabric shrunk on an aircraft structure?
Answer: By applying heat from an iron or a heated blower.