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45 Cards in this Set

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  • Back
What are cracks and small surface fissures in transparent plastic materials called?
Crazing.
What should you use to clean excessive masking paper adhesive residue from plastic?
Aliphatic naphtha.
What is normally used to measure scratches on plastic materials?
Optical micrometer.
To sand out scratches in transparent plastic, what is the maximum coarse number of abrasive paper that you may use?
No. 240A.
What substance is often applied to the buffing wheel in place of, or in addition to, a buffing compound that acts similar to wax to fill hairline scratches and provides a high gloss to plastic surfaces?
Plain tallow.
How many times greater will plastics expand and contract as compared to metal?
Three (3) times greater.
When repairing the surface of reinforced plastics and sandwich construction laminates, what should you use over the build-up repair area to work out the excess resin and air bubbles?
Cellophane.
In addition to the stepped method, what other method of repair may be used to ply damage to solid laminates?
Scarfed method.
What type of coating is frequently used to protect frontal surfaces of reinforced plastics exposed to high speeds?
Rain erosion coating.
A hole, break, or crack in one or both facings, resulting in damage to the honeycomb/core, is referred to as what type of damage?
Puncture damage.
What type of repair patch is normally used to ensure aerodynamic smoothness on aircraft control surfaces?
Flush patch.
Advanced composite materials consist of a combination of what materials?
A combination of high-strength stiff fibers embedded in a common matrix (binder) material.
What type of inspection is used to analyze the extent of the damage and effectiveness of repair to composite materials?
Nondestructive inspection.
What types of fibers are golden yellow in color and are used in many secondary structures replacing fiber glass or as a hybrid with fiber glass?
Kevlar fibers.
What is used as a single-ply arrangement of unidirectional or woven fibers in a matrix?
Lamina.
Crazing and cracking of composite materials by ultraviolet radiation is categorized as what type of damage?
Environmental damage.
What type of damage inspection method is limited to finding defects close to the surface in composite materials?
Tap test.
What does a dark area on the developed film indicate when viewing an X-ray of composite materials?
A thinner area of a part.
"As is" damage is classified as what type of damage?
Negligible damage.
Damage to the aircraft's skin that cannot be allowed to remain "as is" is classified as what type of damage?
Repairable damage.
Where can you find information about structural damage classification, inspection procedures, typical repair procedures, and tool and materials lists?
The aircraft’s structural repair manual (SRM).
What is the classification of damage when water gets trapped in a honeycomb area?
Class VII.
What enables you to identify and classify aircraft damage by confining the repairs to load-carrying requirements?
Repair zones.
What are the most critical zones in defining aerodynamic smoothness of control surfaces?
Leading edges of wings and tails, forward nacelles and inlet areas, and forward fuselages.
What is a good tool for removing small areas of damage on laminates, although it has a tendency to damage the honeycomb core?
A hole saw.
What type of dust and particles are conductive and can cause shorts in electrical equipment and contaminate hydraulic systems?
Graphite.
When making bonded repairs, what materials present health and fire hazards to personnel?
Solvents.
What types of composite material particles and dust cannot be disposed of by burning and must be packaged, tagged, and buried in an approved landfill?
Carbon and graphite fibers.
What is the primary objective of any paint finish?
To protect exposed surfaces against corrosion and deterioration.
How can you identify the paint system of an aircraft?
A decal or stencil located on the right side of the aircrafts aft fuselage.
By what means should chemical or mechanical paint removal be accomplished?
The mildest means possible.
What appearance should chemical paint stripper have that indicates the paint is ready
to be removed?
Wrinkled appearance.
What treatment is an extremely important part of the corrosion control process?
Chemical conversion.
What is the pot life of Epoxy-polyamide primer once the two parts are mixed?
Eight (8) hours.
What type of evaluation should all personnel receive prior to being assigned duties involving the mixing and application of polyurethane paint system coatings?
A preplacement and periodic medical evaluation.
What is the closest distance that unprotected personnel should be allowed to newly painted surfaces upon completion of the painting operation?
Fifteen (15) feet.
For excellent adhesion, what is the drying period for Elastromeric rain erosion-resistant coating?
Seven (7) days.
Regarding painting specifications for letters and numerals, how is the space measurement between letters an numerals determined?
It is always one-sixth (1/6) of the height of the letter or numeral.
What are tactical paint scheme patterns based on?
Optical principles.
What type of paint spray gun is designed for small jobs?
Suction-feed type.
What is the probable cause if your paint spray gun is leaking in the front?
The fluid needle is not seating properly.
What is the desirable distance from the surface that you should hold the spray gun in order to get the proper coverage and a smooth coat of paint?
Between six (6) and ten (10) inches.
What may cause dusting and rippling in a paint finish?
Excessive air pressure.
Basic sealants are classified in how many general categories?
Three (3), pliable, drying, and curing.
What is used to apply Class B sealing materials?
An extrusion gun and spatula.