FAA Exams > Airframe

1	The cantilever wing uses no external bracing. external struts or wire bracing. the skin to carry most of the load to the wing butt.
2	Which of the following conditions will determine acceptance of wood with mineral streaks? Careful inspection fails to reveal any decay. Local irregularities do not exceed limitations specified for spiral and diagonal grain. They produce only a small effect on grain direction.
3	The I beam wooden spar is routed to increase strength. obtain uniform strength. reduce weight.
4	Glue deterioration in wood aircraft structure is indicated by any joint separation. when a joint has separated and the glue surface shows only the imprint of the wood with no wood fibers clinging to the glue. when a joint has separated and the glue surface shows pieces of wood and/or wood fibers clinging to the glue.
5	Laminated wood is sometimes used in the construction of highly stressed aircraft components. This wood can be identified by its perpendicular grain construction. parallel grain construction. similarity to standard plywood construction.
6	In cases of elongated boltholes in a wood spar or cracks in the vicinity of boltholes, a new section of spar should be spliced in or the spar replaced entirely. it is permissible to ream the hole, plug with hardwood, and redrill. the spar may be reinforced by using hardwood reinforcing plates.
7	The strength of a well designed and properly prepared wood splice joint is provided by the reinforcement plates. bearing surface of the wood fibers. glue.
8	(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, both No. 1 and No. 2 are true. only No. 2 is true. only No. 1 is true.
9	The strength classification of fabrics used in aircraft covering is based on bearing strength. shear strength. tensile strength.
10	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. Aluminum foil. 2. Resin impregnated cloth tape. 3. Any one-part type metal primer. 4. Cellulose tape. 3 and 4. 1 and 2. 1 and 4.