fabric and finishes
Aircraft with a Vne of 135 mph or less are considered to be unairworthy when the fabric breaking strength has deteriorated to below
35 lbs per inch.
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 14 CFR Part 43 Appendix states what maintenance actions are considered major repairs and major alterations?
A
What does the term bias mean in relation to fabric coverings?
A cut or fold made at a diagonal to the warp.
Major fabric repairs need to be inspected by
Airframe and Powerplant mechanic with an Inspection Authorization.
What type of coating is applied to protect the fabric from UV light?
Aluminum pigmented dope.
When and how is finishing tape applied on a fabric covered aircraft?
Doped on after the first or second coat of dope.
How many fabric thicknesses will be found in a French fell seam?
Four
Aircraft with a wing loading of 9 lb per square foot and over should have fabric strength at or above
Grade A cotton.
Which of the following is used to create reinforced drain holes in aircraft fabric?
Grommets.
Where is reinforcing tape most commonly used?
Rib caps.
Finishing tape (surface tape is used for what purpose?
To provide additional wear resistance over the edges of fabric forming structures.
When is retarder used when applying fabric topcoats?
When temperatures are above ideal working conditions.
Re-covering a fabric covered aircraft is considered
a major repair or alteration.
Moisture, mildew, chemicals, and acids have no effect
glass fabric
(1) Machine sewn seams in aircraft covering fabrics may be of the folded fell or French fell types. (2) A plain lapped seam is never permissible. Regarding the above statements,
only No. 1 is true
Fabric rejuvenator is used to
restore the condition of dope coatings.
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
speed of the aircraft and the maximum wing loading.
The strength classification of fabrics used in aircraft covering is based on
tensile strength
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?
1 and 4
