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A/C covering/finish

Airframe written

QuestionAnswer
When dope-proofing the parts of the aircraft structure that come in contact with doped fabric, which of the following provide an acceptable protective coating? Aluminum foil and cellulose tape.
The best method of repair for a fabric-covered surface which has an L-shaped tear, each leg of which is approximately 14 inches long, is to sew with a baseball stitch from the center of the tear out toward the extremity of each leg and then dope on a patch.
How many fabric thicknesses will be found in a French-fell seam? four
When testing the strength of Grade A cotton fabric covering an aircraft that requires only intermediate grade, the minimum acceptable strength the fabric must have is 70 percent of the original strength for intermediate fabric.
Which type of coating typically includes phosphoric acid as one of its components at the time of application? wash primer
When humidity is low, 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 is applied? corrosion
Fungicidal dopes are used in aircraft finishing as the first coat to prevent fabric rotting and are applied thin enough to saturate the fabric.
When humidity is low, what is likely to occur if hydrated wash primer is applied to unpainted aluminum and then, 30 to 40 minutes later, a finish top coat is applied? A glossy, blush-free finish.
Which statement is true regarding paint system compatibility? Old wash primer coats may be overcoated directly with epoxy finishes.
Before applying a protective coating to any unpainted clean aluminum, you should avoid touching the surface with bare hands.
The strength classification of fabrics used in aircraft covering is based on tensile strength
When and how is finishing tape applied on a fabric-covered aircraft? Doped on after the 1st or 2nd coat of dope
Created by: mattpayne001
 

 



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