fabric covbering

1. **Often made of leather, neoprene, or polyethylene and used where a cable or control passes through the fabric.

Chafing Strips

2. T/F Organic fabric materials used to cover aircraft are made of cotton or linen.

True

3. **Considered the most accurate means of fabric testing but is a destructive method which requires removal of the strip of fabric being tested.

Pull or Grab Test

4. _____ dope has plasticizers and thinners and provides greater shrinkage of the fabric and is more fire resistant.

Butyrate

5. _____ is added to fabric dope to reflect ultraviolet rays

Aluminum powder

6. ***The fiber orientation that runs at a 90 degree angle to the warp threads is called _____.

Weft

7. **When stitching with thread, a Z-twist signifies a _____ handed twist

Left

8. Additive to dope used to prevent microbial growth and prevent organic fabrics from rotting.

Fungicidal paste

9. T/F A blanket stitch is used for in sewing the fabric along the trailing edge.-

False

10. **In the instance of sewed repair to an L-shaped tear in an aircraft covering, sewing should start at the _________ of the tear using a(n) _______________ stitch.

Apex, baseball

11. **Re-covering and aircraft using materials and procedures specified in the manufacturer's service manual classifies the repair as a _________ __________.

- Major Repair

12. The function of ________ is to seal, tauten and protect the aircraft fabric covering

Dope

13. **To determine fabric strength, the ___________ test or a ___________ test may be used to test the fabric.

Seyboth, Maule

14. **A ___________ is a mixture of very potent solvents and plasticizers that penetrate into the dope to restore its resilience.

Rejuvinator

15. **_____ tape has a much larger warp thread than fill thread and is used for inter-rib bracing and over the fabric on ribs.

Reinforcing

16. **Special slow drying solvent that prevents rapid evaporation and the temperature drop which causes blushing is called ________.

Retarder

17. ________ dope consists of cotton fibers dissolved in nitric acid and is highly flammable and is often used as the first coat due to better adhesive qualities.-

Nitrate

18. **After a fabric has been installed onto an aircraft, what may be applied to it to remove any wrinkles present?

Distilled or demineralized water

19. **A _____ knot is used to secure rib stitches

Modified seine

20. **A patch should be _________ in place when repairing the fabric on an aircraft that has Vne greater than 150 MPH

Sewn

21. **State two locations in an aircraft that are most susceptible to fabric deterioration

• Areas exposed to sunlight

• Areas finished with dark colors

22. **Organic fabric materials used to cover aircraft are made of ______ or _____

Grade A Cotton or Linen

23. **______ ______ ________ is used to secure aircraft covering to the capstrips of ribs to help prevent the fabric from pulling away from the ribs during flight.

Rib Lacing Cord

24. T/F Polyester and Synthetic are considered inorganic fabric materials.

True

25. Fiber orientation that runs 45 degrees to the warp threads.

Bias

26. What is the maximum percentage of deterioration allowed in an A/C to consider unairworthy?

30%

27. **__________ _________ or ________ _________ ________ are used to secure fabric to certain sheet metal parts of the aircraft.

Martin clips or sheet metal screws

28. ___________ ________ are added into fabric covering to provide access to the interior structure of an aircraft.

Inspection rings

29. **The tightly woven edge parallel to the warp direction which prevents edges from unraveling.

Selvage Edge

30. **___________ _____________ is often used as a base coat for CAB dope because of its better adhesive qualities.

Cellulose Nitrate

31. **Which coat of dope should a fungicidal additive be added before spraying on cotton fabric?

First coat

32. To prevent the rapid evaporation of solvents out of the dope when humidity is high,______ ___________ are used to slow-dry the solvent to keep the surface from blushing

Retarders

33. **The minimum value for tensile strength of new Grade A cotton fabric is _____ pounds per square inch.

80

34. **All products used in fabric covering process should be FAA approved and have a ______ which dictates an ____________ stamp should be visible on the edges of the aircraft fabric.

PMA, FAA PMA

35. **The two primary methods used to cover wings?

Envelope and Blanket

36. **The three types of organic fabric materials are

Grade-A Cotton - Intermediate Grade Cotton - Glider/Linen Fabric

37. **__________ ___________ and ____________ __________ are considered inorganic fabric materials.

Synthetic polyester and fiberglass cloth

38. **It is required to complete an FAA Form 337 for repairs of damaged areas larger than _____ inches

16

39. Drainage grommets are usually installed with the __________ coat of dope.-

Second

40. **________ tape is usually "pinked" for better adhesion quality and is used to streamline and reinforce openings.

Surface