AF Aircraft Covering

When and how is finishing tape applied on a fabric-covered aircraft?

Sewed or laced on before dope is applied.
Doped on immediately prior to the finish coat.
Doped on after the first or second coat of dope.

The determining factor(s) for the selection of the correct weight of textile fabric to be used in covering any type of aircraft is the

maximum wing loading.
speed of the aircraft.
speed of the aircraft and the maximum wing loading.

How many fabric thicknesses will be found in a French-fell seam?

Five.
Three.
Four.

Finishing tape (surface tape) is used for what purpose?

To help prevent "ripple formation" in covering fabric.
To provide additional wear resistance over the edges of fabric forming structures.
To provide additional anti-tear resistance under reinforcement tape.

Moisture, mildew, chemicals, and acids have no effect on

glass fabric.
cotton fabric.
polyester fabric.

Fungicide and mildewcide additives are important for fabric covered aircraft, such as

cotton and dacron.
cotton and linen.
glass and linen.

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

re-cover the entire bay in which the tear is located.
sew from the end of each leg to the center of the tear with a baseball stitch and then dope on a patch.
sew with a baseball stitch from the center of the tear out toward the extremity of each leg and then dope on a patch.

The strength classification of fabrics used in aircraft covering is based on

bearing strength.
shear strength.
tensile strength.

Fabric rejuvenation is used to

restore the condition of dope coatings.
restore fabric strength and tautness to at least the minimum acceptable level.
penetrate the fabric and restore fungicidal resistance.

Machine-sewn seams in aircraft covering fabrics may be which of the following types?

Folded-fell or plain lapped.
Folded-fell, French-fell, or plain lapped.
French-fell or plain lapped.

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 its original strength.
70 percent of the original strength for intermediate fabric.
56 pounds per inch warp and fill.

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?

Resin impregnated cloth tape and cellulose tape.
Aluminum foil and resin impregnated cloth tape.
Aluminum foil and cellulose tape.

AF Aircraft Covering

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