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Aircraft Finishes
Airframe Oral Study Questions
18
Aviation
Undergraduate 1
03/20/2013

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Term
WHY SHOULD WOODEN WING SPARS BE FINISHED WITH A TRANSPARENT VARNISH?
Definition
SO ANY ROT OR DECAY IN THE WOOD MAY BE DETECTED.
Term
WHY IS RETARDER USED IN DOPE WHEN THE DOPE IS BEING SPRAYED IN HUMID CONDITIONS?
Definition
TO SLOW THE DRYING AND PREVENT BLUSHING.
Term
WHAT IS USED AS PROTECTIVE FINISH FOR THE INSIDE OF STEEL TUBING?
Definition
HOT LINSEED OIL
Term
HOW THICK SHOULD A COAT OF WASH PRIMER BE THAT IS USED ON A ALUMINUM ALLOY AIRCRAFT STRUCTURE?
Definition
THIN ENOUGH THAT IS DOES NOT HIDE THE SURFACE OF THE METAL.
Term
WHAT HAPPENS TO AN ENAMEL FINISH WHEN PAINT REMOVER IS APPLIED TO IT?
Definition
THE ENAMEL SOFTENS AND SWELLS SO IT PULLS AWAY FROM THE SURFACE OF THE METAL.
Term
WHAT SHOULD BE DONE TO AN AIRCRAFT SURFACE THAT IS COVERED WITH PAINT REMOVER TO GIVE THE REMOVER THE MAXIMUM AMOUNT OF TIME TO SOAK INTO THE OLD FINISH?
Definition
IT SHOULD BE COVERED WITH A POLYETHYLENE SHEETING (PAINT DROP CLOTH) TO KEEP SOLVENTS FROM EVAPORATING BEFORE IT HAS TIME TO PENETRATE THE PAINT FILM.
Term
WHEN MIXING EPOXY PAINT, SHOULD THE CONVERTER BE ADDED TO THE RESIN OR RESIN TO THE CONVERTER?
Definition
ALWAYS CONVERTER TO THE RESIN.
Term
WHAT IS THE GENERAL REASON FOR RUNS AND SAGS IN A FINISH THAT IS BEING SPRAYED ONTO A FLAT SURFACE?
Definition
TOO MUCH PAINT APPLIED, FILM IS TOO THICK.
Term
WHAT CAN BE DONE TO REMEDY BLUSHING THAT HAS FORMED ON A DOPED SURFACE THAT HAS JUST BEEN SPRAYED?
Definition
SPRAY A LIGHT COAT MIXTURE OF ONE PART RETARDER AND TWO PARTS THINNER OVER THE BLUSHED AREA. LET DRY AND ADD ANOTHER COAT, IF IT DOES NOT REMOVE, THEN THE BLUSH WOULD HAVE TO BE SANDED AND REPAINTED.
Term
HOW CAN A VINYL FILM DECAL BE REMOVED FROM AN ALUMINUM ALLOY SURFACE?
Definition
PLACE A CLOTH SATURATED WITH MEK OVER THE DECAL UNTIL SOFTENED AND REMOVE WITH A PLASTIC SCRAPPER.
Term
WHAT SAFETY PRECAUTION MUST BE OBSERVED WHEN SWEEPING A PAINT ROOM THAT HAS DRIED DOPE OR LACQUER OVERSPRAY ON THE FLOOR?
Definition
WET DOWN THE FLOOR WITH WATER BEFORE SWEEPING. STATIC ELECTRICITY CAN FORM FROM DRY SWEEPING AND CAUSE A FIRE.
Term
WHEN AN AIRCRAFT IS BEING RECOVERED WHEN IS FUNGICIDAL DOPE APPLIED TO THE FABRIC?
Definition
WITH THE FIRST COAT OF DOPE.
Term
WHAT WILL HAPPEN IF DOPE IS SPRAYED OVER AN ENAMELED SURFACE?
Definition
THE THINNER IN THE DOPE WILL CAUSE THE ENAMEL TO SWELL.
Term
WHAT ARE THREE TYPES OF PRIMER THAT CAN BE USED WHEN PAINTING AND AIRCRAFT?
Definition
WASH PRIMER, ZINC CHROMATE PRIMER, AND EPOXY PRIMER.
Term
HOW IS THE FINISH REMOVED FROM A FIBERGLASS AIRCRAFT COMPONENT THAT IS BEING REPAIRED?
Definition
THE FINISH MUST BE SANDED OFF. PAINT REMOVER CAN SOFTEN THE RESIN OF WHICH THE COMPONENT IS MADE.
Term
WHAT ARE THE TWO BASIC TYPES OF DOPE THAT ARE USED ON FABRIC-COVERED AIRCRAFT?
Definition
NITRATE AND BUTYRATE DOPE
Term
WHAT KIND OF DOPE IS USED ON POLYESTER SYNTHETIC FABRIC THAT HAS BEEN HEAT SHRUNK ON AN AIRCRAFT STRUCTURE?
Definition
NONTAUTING BUTYRATE DOPE.
Term
WHAT TYPE OF THINNER IS USED WITH ZINC CHROMATE PRIMER?
Definition
TOLUOL OR TOLUENE.
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