AVIATION MAINTENANCE TECHNICIAN AIRFRAME STUDY GUIDE

AVIATION MAINTENANCE TECHNICIAN AIRFRAME STUDY GUIDE 1. Laminated wood spars may be substituted for solid rectangular wood spars - ANS-if the same quality wood is used in both 2. The strength of a well designed and properly prepared wood splice joint is provided by the - ANS-glue 3. Where is information found concerning acceptable species substitutions for wood materials used in aircraft repair? - ANS-AC 43.13-1B 4. In cased of elongated boltholes in a wood spar or cracks in the vicinity of boltholes - ANS-a new section of spar should be spliced in or the spar replaced entirely 5. A faint line running across the grain of a wood spar generally indicates - ANS-compression failure 6. which statement about wood decay is correct? - ANS-Decay is not acceptable in any form or amount 7. Which of the following conditions will determine acceptance of wood with mineral streaks? - ANS-Careful inspection fails to reveal any decay 8. the I beam wooden spar is routed to - ANS-reduce weight 9. Pin knot clusters are permitted in wood aircraft structure provided - ANS-they produce a small effect on grain direction 10. The cantilever wing used - ANS-no external bracing 11. Laminated wood is sometimes used in the construction of highly stressed aircraft components. this wood can be identified by its - ANS-parallel grain construction 12. When patching a plywood skin, abrupt changes in cross sectional areas which will develop dangerous stress concentration should be avoided by using - ANS-circular or elliptical patches 13. Glue deterioration in wood aircraft structure is indicated - ANS-when a joint has separated and the glue surface shows only the imprint of the wood with no wood fibers clinging to the glue 14. Compression failures in wood aircraft structures are characterized by buckling of the fibers that appear as streaks on the surface - ANS-at right angles to the grain 15. When and how is finishing tape applied on a fabric covered aircraft? - ANS-Doped on after the first or second coat of dope 16. 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 - ANS-speed of the aircraft and the maximum wing loading 17. How many fabric thicknesses will be found in a French fell seam? - ANS-four 18. Finishing tape (surface tape) is used for what purpose? - ANS-To provide additional wear resistance over the edges of fabric forming structures 19. Moisture, mildew, chemicals and acids have no effect on - ANS-glass fabric 20. 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 - ANS-sew with a baseball stitch from the center of the tear out toward the extremity of each leg and then dope on a patch 21. the strength classification of fabrics used in aircraft covering is based on - ANS-tensile strength 22. Fabric rejuvenator - ANS-restores the condition of dope coatings 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 23. Regarding the above statements - ANS-only No . 1 is true 24. When testing the strength of Grade A cotton fabric covering an aircraft that requires only intermediate grade, the minimum acceptable strength the fabric musts have is - ANS-70 percent of the original strength for intermediate fabric