Term
| WHAT IS THE PORPER TYPE OF NONDESTRUCTIVE INSPECTION TO USE FOR LOCATING SURFACE CRACKS IN AN ALUMINUM ALLOY CASTING AND FORGING? |
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Definition
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Term
| EXPLAIN THE PROCEDURE TO USE WHEN MAKING A DYE PENETRANT INSPECTION OF A PART. |
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Definition
- CLEAN PART THOUROUGHLY
- APPLY PENETRANT
- ALLOW IT TO SOAK FOR RECOMMENDED TIME
- REMOVE ALL PENETRANT FROM SURFACE
- APPLY DEVELOPER.
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Term
| EXPLAIN THE PROCEDURE WHEN MAKING A MAGNETIC PARTICLE INSPECTION OF A PART. |
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Definition
- THOROUGHLY CLEAN PART
- MAGNATIZE PART, AS DIRECTED BY APPROPRIATE SERVICE MANUAL
- FLOW INDICATING MEDIUM OVER THE SURFACE
- INSPECT IT UNDER BLACK LIGHT.
- WHEN INSPECTION COMPLETE THOROUGHLY DEMAGNITIZE PART.
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Term
| WHAT METHOD WOULD BE MOST APPROPRIATE FOR CHECKING A NONFERROUS METAL PART FOR INTERGRANULAR CORROSION? |
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Definition
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Term
| WHAT METHOD WOULD BE MOST APPROPRIATE FOR CHECKING THE INTERNAL STRUCTURE OF AN AIRPLANE WING? |
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Definition
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Term
| WHY IS IT IMPORTANT THAT ALL ENGINE PARTS WHICH HAVE BEEN INSPECTED BY THE MAGNETIC PARTICLE METHOD BE COMPLETELY DEMAGNETIZED? |
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Definition
| IF NOT COMPLETELY DEMAGNETIZED THEY WILL ATTRACK STEEL PARTICLES THAT ARE PRODUCED BY ENGINE WEAR AND WILL CAUSE DAMAGE TOE BEARING SURFACE. |
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Term
| WHY IS IT IMPORTANT THAT ALL PARTS BE THOROUGHLY CLEANED BEFORE THEY ARE INSPECTED BY THE DYE PENETRANT METHOD? |
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Definition
| ANY GREASE OR DIRT IN A FAULT WITH KEEP PENETRANT FROM SEEPING INTO THE FAULT. |
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Term
| WHY IS IT IMPORTANT THAT A PIECE OF ALUMINUM ALLOY BE QUENCHED IMMEDIATELY AFTER REMOVED FROM HEAT-TREATING OVEN? |
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Definition
| ANY DELAY IN QUENCHING AFTER REMOVED FROM OVEN WILL ALLOW THE GRAIN STRUCTURE TO GROW ENOUGH THAT INTERGRANULAR CORROSION IS LIKELY TO FORM. |
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Term
| EXPLAIN THE WAY A STEEL STRUCTURE IS NORMALIZED AFTER IT HAS BEEN WELDED. |
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Definition
| HEAT THE STEEL STRUCTURE TO A TEMP ABOVE ITS CRITICAL TEMP AND ALLOW TO COOL IN STILL AIR. |
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Term
| WHY IS A PIECE OF STEEL TEMPERED AFTER IT HAS BEEN HARDENED? |
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Definition
| TEMPERING REMOVES SOME OF ITS BRITTLENESS. (HARDENING STEEL = BRITTLE) |
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Term
| WHAT IS MEANT BY AN ICEBOX RIVET? |
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Definition
| RIVETS THAT ARE STORED IN A SUBFREEZING ICE BOX UNTIL READY FOR USE. COLD STORAGE DELAYS THE HARDENING. RIVETS TYPICALLY MADE OF 2017 & 2024 ALUMINUM ALLOY. |
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Term
| WHAT TYPE OF LOADING SHOULD BE AVOIDED WHEN USING A SELF LOCKING NUT ON AN AIRCRAFT BOLT? |
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Definition
| SELF LOCKING SHOULD NOT BE USED WHERE THERE ARE ANY ROTATIONAL FORCES(Loading) APPLIED TO THE NUT OR BOLT. |
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Term
| WHAT DETERMINES THE CORRECT GRIP LENGTH OF A BOLT USED IN AN AIRCRAFT STRUCTURE? |
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Definition
| GRIP LENGTH SHOULD EQUAL THE SAME COMBINED THICKNESS OF THE MATERIALS BEING HELD BY THE BOLT. |
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Term
| HOW TIGHT SHOULD THE NUT BE INSTALLED ON A CLEVIS BOLT THAT IS USED TO ATTACH A CABLE FITTING TO A CONTROL SURFACE HORN? |
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Definition
| THE NUT ON THE CELVIS BOLT SHOULD NOT BE TIGHT ENOUGH TO PREVENT THE CLEVIS BOLT TURNING IN THE CABLE FITTING AND THE HORN. (BOLT SHOULD BE ABLE TO SPIN) |
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Term
| WHY IS IT VERY IMPORTANT THAT THE SURFACE OF A PIECE OF CLAD ALUMINUM ALLOY NOT BE SCRATCHED? |
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Definition
| THE ALUMINUM ALLOY BELOW THE CLADDING IS SUSCEPTIBLE TO CORROSION. CORROSION COULD FORM IF SCRATCHED THROUGH. |
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Term
| WHAT DETERMINES THE SIZE OF THE TIP THAT IS TO BE USED WHEN GAS WELDING STEEL? |
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Definition
| THE THICKNESS OF MATERIAL BEING WELDED. |
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Term
| HOW IS THE WELDING FLUX REMOVED FROM ALUMINUM THAT HAS BEEN GAS WELDED? |
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Definition
| BY SCRUBBING WITH HOT WATER AND BRISTLE BRUSH. |
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Term
| WHAT MUST BE DONE TO A WELDED JOINT IF IT MUST BE REWELDED? |
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Definition
| ALL TRACES OF THE OLD WELD MUST BE REMOVED SO THE NEW WELD WILL PENETRATE THE BASE METAL. |
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Term
| WHAT KIND OF INSTRUMENT IS USED TO MEASURE THE RUNOUT OF AN AIRCRAFT ENGINE CRANKSHAFT? |
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Definition
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Term
| WHAT MEASURING INSTRUMENT IS USED TO MEASURE THE FIT BETWEEN A ROCKER ARM SHAFT, AND ITS BUSHING? |
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Definition
| OUTSIDE DIAMETER IS MEASURED WITH A MICOMETER CALIPER AND INSIDE OF THE BUSHING IS MEASURED WITH A TELESCOPING GAUGE AND MICROMETER CALIPER. |
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Term
| WHAT IS THE SMALLEST SIZE CABLE ALLOWED TO BE USED IN THE PRIMARY CONTROL SYSTEM OF AN AIRCRAFT? |
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Definition
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Term
| WHAT TYPE OF CONTROL CABLE MUST BE USED WHEN PULLEYS ARE USED TO CHANGE THE DIRECTION OF CABLE TRAVEL? |
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Definition
| EXTRA-FLEXABLE CABLE (7 X 19). |
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Term
| EXPLAIN THE WAY A PIECE OF ALUMINUM ALLOY IS SOULUTION HEAT-TREATED. |
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Definition
- HEATED IN OVEN TO PROPER TEMP FOR A SPECIFIC TIME
- THEN REMOVED AND QUENCHED IN WATER.
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Term
| WHAT IS MEANT BY PRECIPITATION HEAT-TREATMENT OF A PIECE OF ALUMINUM ALLOY? |
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Definition
| AFTER SOLUTION HEAT-TREATMENT, IT IS HELD AT A SPECIFIC ELEVATED TEMPERATURE FOR A PERIOD OF TIME. AKA: ARTIFICIAL AGING. |
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Term
| HOW DOES FILIFORM CORROSION USUALLY APPEAR IN AN AIRCRAFT STRUCTURE? |
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Definition
| AS THREAD-LIKE LINES OF PUFFINESS, UNDER A FILM OF POLYURETHANE OR OTHER DENSE FINISH TOP COATS. |
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