Term
| INDENTIFY THE AREAS ON AN AIRCRAFT THAT ARE MOST PRONE TO CORROSION. |
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Definition
- BATTERY COMPARTMENT
- EXHAUST SYSTEM AND TRAILS
- LOWER AREA OF BELLY
- WHEEL WELLS
- PIANO HINGES
- AREAS OF DISSIMILAR METAL CONTACT
- WELDED AREAS
- INSIDE OF FUEL TANKS
- METAL FITTINGS
- LAVATORIES AND FOOD SERVICE AREAS.
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Term
| WHERE IS FILIFORM CORROSION MOST LIKELY TO OCCUR ON AN AIRCRAFT? |
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Definition
| UNDER DENSE COATING OF TOPCOAT ENAMEL SUCH AS POLYURETHANE. FILIFORM IS CAUSED BY IMPROPERLY CURED PRIMER. |
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Term
| WHERE IS FRETTING CORROSION MOST LIKELY TO OCCUR ON AN AIRCRAFT? |
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Definition
| A LOCATION WHERE THERE IS SLIGHT MOVEMENT BETWEEN TWO COMPENENTS, AND NO WAY FOR THE CORROSIVE RESIDUE TO BE REMOVED AS IT FORMS. |
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Term
| WHERE IS INTERGRANULAR CORROSION MOST LIKELY TO OCCUR ON AN AIRCRAFT? |
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Definition
| ALONG THE GRAIN BOUNDARIES OF ALUMINUM THAT HAS BEEN IMPROPERLY HEAT TREATED. |
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Term
| WHERE IS DISSIMILAR METAL CORROSION MOST LIKELY TO OCCUR ON AN AIRCRAFT? |
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Definition
| ANYWHERE DIFFERENT TYPES OF METAL COME INTO CONTACT WITH EACH OTHER. |
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Term
| WHERE IS STRESS CORROSION MOST LIKELY TO OCCUR ON AN AIRCRAFT? |
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Definition
| IN ANY METAL COMPONENT THAT IS UNDER CONSTANT TENSILE STRESS. THE METAL AROUND HOLES IN CASTINGS THAT ARE FITTED WITH PRESSED IN BUSHINGS ARE SUSCEPTABLE AS WELL. |
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Term
| WHAT MUST BE DONE TO A PIECE OF ALUMINUM ALLOY TO REMOVE SURFACE CORROSION AND TO TREAT THE METAL TO PREVENT FURTH CORROSION? |
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Definition
- REMOVE CORROSION WITH A BRISTLE BRUSH OR NYLON SCRUBBER
- NEUTRALIZE SURFACE WITH CHROMIC ACID OR SOME TYPE OF CONVERSION COATING
- PAINT IT.
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Term
| WHAT IS USED TO KEEP CORROSION FROM FORMING ON STRUCTURAL ALUMINUM ALLOY? |
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Definition
| OXIDE COATING OR ALUMINUM CLADDING |
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Term
| HOW MAY RUST BE REMOVED FROM A HIGHLY STRESSED METAL PART? |
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Definition
| GLASS BEAD BLASTING, CAREFUL POLISHING WITH MILD ABRASIVE PAPER OR BY USING FINE BUFFING COMPOUND ON A CLOTH BUFFING WHEEL. |
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Term
| HOW SHOULD AN A&P MINIMIZE CORROSION AT PIANO HINGES? |
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Definition
| KEEP AS CLEAN AND DRY AS PRACTICABLE, LUBRICATE WITH LOW VESCOSITY MOISTURE DISPERSING AGENT. |
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Term
| WHAT TOOLS ARE PROPER FOR REMOVING CORROSION FROM ALUMINUM ALLOY? |
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Definition
| ALUMINUM WOOL OF ALUMINUM WIRE BRUSHES, ROTARY FILE FOR SERVERE CORROSION. |
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Term
| WHAT IS USED TO CLEAN TRANSPARENT PLASTIC WINDSHIELDS AND WINDOWS OF AND AIRCRAFT? |
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Definition
| MILD SOAP AND CLEAN WATER |
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Term
| WHAT IS USED TO NEUTRALIZE THE ELECTROLYTE OF A LEAD-ACID BATTERY THAT HAS BEEN SPILLED ON AN AIRCRAFT STRUCTURE? |
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Definition
| SOLUTION OF BICARBONATE SODA AND WATER OR VINEGAR. |
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Term
| WHAT IS USED TO NEUTRALIZE THE ELECTROLYTE OF A NICKEL-CADMIUM BATTERY THAT HAS BEEN SPILLED ON AN AIRCRAFT STRUCTURE? |
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Definition
| SOLUTION OF BORIC ACID AND WATER OR VINEGAR. |
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Term
| WHAT SOLVENT IS RECOMMENDED FOR REMOVING GREASE FROM FABRIC PRIOR TO DOPING IT? |
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Definition
| METHYL ETHYL KETONE (MEK) OR LACQUER THINNER. |
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Term
| WHAT CAN BE USED TO REPAIR THE ANODIZED SURFACE OF AN ALUMINUM ALLOY PART? |
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Definition
| CHEMICAL CONVERSION COATING SUCH AS ALODINE. |
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Term
| WHAT TYPE OF DEVICE IS USED TO REMOVE SURFACE CORROSION FROM A PIECE OF MAGNESIUM ALLOY? |
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Definition
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Term
| HOW IS THE INSIDE OF STRUCTURAL STEEL TUBING PROTECTED FROM CORROSION? |
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Definition
| TUBING IS FILLED WITH HOT LINSEED OIL THEN DRAINED. (COATED WITH HOT LINSEED OIL). |
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