Sheetmetal Exam WITH ANSWERS

Sheetmetal Exam WITH |\ |\ |\




ANSWERS

What is the basic requirement for making a structural repair?
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- Maximum number of rivets must be used
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- It must be as strong as the original
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- Repairs must be calculated to recommended size - CORRECT
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ANSWERS ✔✔It must be as strong as the original |\ |\ |\ |\ |\ |\ |\ |\




According to 43.13, which of the following drill bit diameters is
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preferred for stop drilling cracks? |\ |\ |\ |\




- 1/4 Inch
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- 1/16 Inch
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- 1/8 Inch - CORRECT ANSWERS ✔✔1/8 Inch
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A good method for removing skin is to
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- Use a chain saw
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,- Chain drill
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- Use a hole saw - CORRECT ANSWERS ✔✔Chain drill
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What would be the factor of safety of a spar if the maximum
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probable load was 25,000 psi in compression if the spar would
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collapse at 75,000 psi? |\ |\ |\




- 67%
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- 2 to 1
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- 3 to 1 - CORRECT ANSWERS ✔✔3 to 1
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When using a split ring reinforcement blind patch repair, what type
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of fasteners are used to attach the reinforcement to the skin?
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- Screws
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- Solid Rivets
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- Blind Rivets - CORRECT ANSWERS ✔✔Solid Rivets
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What is the minimum factor of safety for an aircraft structural part?
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- 1.0:1
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- .5:1
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, - 1.5:1 - CORRECT ANSWERS ✔✔1.5:1
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When repairing a hole on a metal stressed skin, the major
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consideration in the design of the patch should be?
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- To use patch material one gage thicker than skin
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- The number of repair rivets used
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- You use a rivet diameter one size larger - CORRECT ANSWERS
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✔✔The number of repair rivets used
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During straight and level flight, what primary stress is acting on
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lower surface wing stringers?
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- Compression Bending
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- Tension
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- Torsion - CORRECT ANSWERS ✔✔Tension
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Light scratches on skin are generally repaired by
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- Polishing
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- Outside Lap Patches
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- Stop Drilling - CORRECT ANSWERS ✔✔Polishing
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