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
25.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? - ANS-Aluminum Foil and
26.Cellulose Tape
27.If registration numbers are to be applied to an aircraft with a letter height
of 12 inches, which is the minimum space required for the registration mark
N1683C?
28.Note:
29.2/3 x heights = character width
30.1/6 x height = width for 1
31.1/4 x 2/3 height = spacing
32.1/6 x height = stroke or line width - ANS-52 inches
33.If masking tape is applied to an aircraft such as for trim spraying, and is left
on for several days and/or exposed to heat, it is likely that the tape will -
ANS-cure to the finish and be very difficult to remove
34.What is used to slow the drying time of some finishes and to prevent blush?
- ANS-Retarder
, 35.Which type of coating typically includes phosphoric acid as on of its
components at the time of application? - ANS-Wash primer
36.Which properly applied finish topcoat is the most durable and chemical
resistant? - ANS-Polyurethane
37.Aluminum-pigment in dope is used primarily to - ANS-exclude sunlight from
the fabric
38.A correct use for acetone is to - ANS-remove grease from fabric
39.Which of the following is a hazard associated with sanding on fabric
covered surfaces during the finishing process? - ANS-static electricity
buildup
40.What is likely to occur if UNHYDRATED wash primer is applied to unpainted
aluminum and then about 30 to 40 minutes later a finish topcoat, when the
humidity is low? - ANS-Corrosion
41.Fungicidal dopes are used in aircraft finishing as the - ANS-first coat to
prevent fabric rotting and are applied extremely thin to saturate the fabric
42.Before spraying any finishing materials on unpainted clean aluminum, -
ANS-avoid touching the surface with bare hands
43.What is likely to occur if HYDRATED wash primer is applied to unpainted
aluminum and then about 30 to 40 minutes late a finish topcoat, when the
humidity is low? - ANS-A glossy, blush-free finish
44.What is the usual cause of runs and sags in aircraft finishes? - ANS-Too
much material applied in one coat
45.Which defect in aircraft finishes may be caused by adverse humidity, drafts,
or sudden changes in temperature? - ANS-Blushing
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
25.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? - ANS-Aluminum Foil and
26.Cellulose Tape
27.If registration numbers are to be applied to an aircraft with a letter height
of 12 inches, which is the minimum space required for the registration mark
N1683C?
28.Note:
29.2/3 x heights = character width
30.1/6 x height = width for 1
31.1/4 x 2/3 height = spacing
32.1/6 x height = stroke or line width - ANS-52 inches
33.If masking tape is applied to an aircraft such as for trim spraying, and is left
on for several days and/or exposed to heat, it is likely that the tape will -
ANS-cure to the finish and be very difficult to remove
34.What is used to slow the drying time of some finishes and to prevent blush?
- ANS-Retarder
, 35.Which type of coating typically includes phosphoric acid as on of its
components at the time of application? - ANS-Wash primer
36.Which properly applied finish topcoat is the most durable and chemical
resistant? - ANS-Polyurethane
37.Aluminum-pigment in dope is used primarily to - ANS-exclude sunlight from
the fabric
38.A correct use for acetone is to - ANS-remove grease from fabric
39.Which of the following is a hazard associated with sanding on fabric
covered surfaces during the finishing process? - ANS-static electricity
buildup
40.What is likely to occur if UNHYDRATED wash primer is applied to unpainted
aluminum and then about 30 to 40 minutes later a finish topcoat, when the
humidity is low? - ANS-Corrosion
41.Fungicidal dopes are used in aircraft finishing as the - ANS-first coat to
prevent fabric rotting and are applied extremely thin to saturate the fabric
42.Before spraying any finishing materials on unpainted clean aluminum, -
ANS-avoid touching the surface with bare hands
43.What is likely to occur if HYDRATED wash primer is applied to unpainted
aluminum and then about 30 to 40 minutes late a finish topcoat, when the
humidity is low? - ANS-A glossy, blush-free finish
44.What is the usual cause of runs and sags in aircraft finishes? - ANS-Too
much material applied in one coat
45.Which defect in aircraft finishes may be caused by adverse humidity, drafts,
or sudden changes in temperature? - ANS-Blushing
