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Title: A@P AIRFRAME

Description: AIRFRAME

Total Flash Cards: 53

Created: 10/26/2008 09:53:42

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Cards in this set:

Term
Laminated wood spars may be substituted for solid rectangular wood spars
Definition

if the same quality wood is used in both

Term
The strength of a well-designed and properly prepared wood splice joint is provided by the ?
Definition
Glue
Term
Where is information found concerning acceptable species substitutions for wood materials used in aircraft repair?
Definition
AC 43.13-1B
Term
In cases of elongated boltholes in a wood spar or cracks in the vicinity of boltholes.
Definition
a new section of spar should be spliced in or the spar replaced entirely
Term
A faint line running across the grain of a wood spar generally indicates
Definition
compression failure.
Term
Which statement about wood decay is correct?
Definition
Decay is not acceptable in any form or amount.
Term
Which of the following conditions will determine acceptance of wood with mineral streaks?
Definition
Careful inspection fails to reveal any decay
Term
The I-Beam wooden spar is routed to
Definition
reduce weight
Term
Pin knot clusters atre permitted in wood aircraft structure provided?
Definition
they produce a small effect on grain direction.
Term
The cantilever wing uses
Definition
no external bracing
Term
Laminated wood is sometimes used in the construction of highly stressed aircraft components. This wood can be identified by its
Definition
 parallel grain construction
Term
when patching a plywood skin, abrupt changes in cross-sectional areas which will develop dangerous stress concentrationshould be avoided by using  
Definition
circular or elliptical patches
Term
Glue deterioration in wood aircraft structure is indicated
Definition
when a joint has separated and the glue surface shows only the imprint of the wood with no wood fibers clinging to glue.
Term
Compression failures in wood aircraft structures are characterized by buckling of the fibers that appear as streaks on the surface.
Definition
at right angles to the grain.
Term
When and how is finishing tape applied on a fabric-covered aircraft
Definition
Doped on after the first or second coat of dope.
Term
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
Definition
speed of the aircraft and the maximum wing loading
Term
How many fabric thicknesses will be found in a French-fell seam?
Definition
FOUR
Term
Finishing tape ( surface tape) is used for what purpose?
Definition
To provide additional wear resistance over the edges of fabric forming structures.
Term
Moisture, mildew, chemicals, and acids have no effect on?
Definition
glass fabric
Term
The best method of repair for a fabric -covered surface which has an L-shaped tear, each leg of which is approximatly 14 inches long, is to 
Definition
sew with a baseball stitch from the center of the tear out toward the extremity of each leg and dope on a patch.
Term
The strength classification of fabrics used in aircraft covering is based on
Definition
tensile strength
Term
Definition
Term
Fabric rejuvenator is used to
Definition
restore the condition of dope coatings.
Term

(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.

Definition
only No. 1 is true
Term
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
Definition
70 percent of the original strength for intermediate fabric
Term
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
Definition
Aluminum foil, Cellulose tape
Term
If registration numbers are to be applied to an aircraft with a letter hieght of 12 inches, what is the minimum space required for the registration mark N1683C
Definition
52 inches
Term
If masking tape is applied to an aircraft such as for trim spraying, and is left on for several days or exposed to heat, it is likely that the tape will
Definition
cure to the finish and be difficult to remove
Term
What is used to slow the drying time of some finishes and to prevent blush
Definition

Retarder

Term
Which type of coating typically includes phosphoric acid as one of its components at the time of application
Definition
Wash primer
Term
Which properly applied finish topcoat is the most durable and chemical resistant
Definition
polyurethane
Term
Aluminum-pigment in dope is used primarily to
Definition
reflect ultraviolent from the fabric
Term
A correct use for acetone is to
Definition
remove grease from fabric
Term
Which of the following is a hazard associated with sanding on fabric covered surfaces during the finishing process?
Definition
Static electricity buildup
Term
What is likely to occur if un hydrated wash primer is applied to unpainted aluminum and then about 30 to 40 minutes later a finish topcoat, when is the humidity is low
Definition
A glossy, blush free finish
Term
What is the usual cause of runs and sags in aircraft finishes?
Definition
Too much material applied in one coat
Term
Which defect in aircraft finishes may be cleaned by adverse humidity, drafts, or sudden changes in temperature.
Definition
Blushing
Term
Which statement is true regarding paint system compatibility?
Definition
Old wash primer coats may be overcoated directly with epoxy finishes.
Term
A well-designed rivet joint will subject the rivets to
Definition
shear loads
Term
A main difference between Lockbolt/Huckbolt tension and shear fasteners( other than thier application) is in the
Definition
number of locking collar groves.
Term
Alloy 2117 rivets are heat treated
Definition
by the manufacturer and do not require to be heat treated before being driven.
Term
The general rule for finding proper rivet diameter is
Definition
three times the thickness of the thickest sheet
Term
The shop head of a rivet should be
Definition
one and a half times the diameter of the rivet shank
Term
One of the main advantages of Hi-Lok type fasteners over earlier generations is that
Definition
they can be installed with ordinary hand tools
Term
The markings on the head of a Dzus fastener identify the?
Definition
body diameter, type of head, and length of fastener.
Term
The Dzus turnlock fastener consist of a stud grommet, and receptacle. The stud length is measured in
Definition
hundredths of an inch
Term
The Dzus turnlock fastener consist of a stud , grommet, and recepticle. The stud diameter is measured in
Definition
sixeenths of an inch
Term
Threaded rivets ( rivnuts) are commonly used to
Definition
attach parts or components with screws to sheet metal
Term
The installation of Cherrymax and Olympic-Lok rivets is accomplished by utilizing
Definition
a pulling tool
Term
Hole filling fasteners ( for example, MS20470 rivets) should not be used in composite structures primarily because of the
Definition
possibility of causing delamination
Term
Metal fasteners used with carbon/ graphite composite structures
Definition
must be constructed of material such as titanium or corrosion resistant steel.
Term

Sandwich panels made of metal honeycomb construction are used on modern aircraft because this type of construction.

Definition
has a high strength to weight ratio
Term
Definition



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