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Sheet Metal Structural Repair Flashcards

7 cards from real AMT practice questions. Tap to flip, then mark Knew It or Still Learning โ€” missed cards come back until you master them.

Read the first 7 Sheet Metal Structural Repair flashcards as text
  1. What minimum bend radius should be used when forming a sheet metal repair part to prevent cracking during bending?

    Answer: The minimum bend radius specified in the manufacturer's data for the alloy and thickness

    Minimum bend radius is specific to the alloy type, temper, and sheet thickness and must be obtained from the manufacturer's data or applicable repair manual.

  2. Which inspection method is best suited for detecting subsurface cracks in aluminum sheet metal structure that is not visible from the surface?

    Answer: Eddy current inspection

    Eddy current inspection can detect subsurface cracks in conductive materials without requiring surface access or disassembly.

  3. What is the purpose of applying primer to bare aluminum surfaces before riveting a repair patch?

    Answer: To prevent corrosion between mating surfaces

    Zinc chromate or epoxy primer is applied to bare aluminum mating surfaces to prevent corrosion from moisture trapped between the layers.

  4. A rivet driven too hard (overdriven) will exhibit which characteristic?

    Answer: The shop head will be too flat and spread excessively wide

    An overdriven rivet has a shop head that is excessively flat and wider than the allowed 1.5 times the rivet diameter, weakening the joint.

  5. What is the standard rivet pitch (spacing between rivets in the same row) for most aircraft sheet metal repairs?

    Answer: 4D to 8D (4 to 8 rivet diameters)

    Standard rivet pitch in aircraft sheet metal work is 4D to 8D (four to eight times the rivet diameter), with 6D being most common.

  6. When is it acceptable to use a blind rivet (Cherry rivet or similar) in an aircraft structural repair?

    Answer: Only when approved by the aircraft manufacturer or SRM for that specific application

    Blind rivets may only be used structurally when specifically approved by the aircraft manufacturer's Structural Repair Manual for that location.

  7. What does the term 'faying surface' refer to in sheet metal repair?

    Answer: The mating contact surfaces between two structural members

    Faying surfaces are the contacting faces between two structural parts joined together, such as a skin and a stringer or repair patch.