Type training · Boeing 737 Classic B1.1 · ATA 51–57

Boeing 737 Classic B1.1: Structure and Windows (ATA 51–57)Type training questions & answers

Fail-safe design, body sections and stations, struts and fuse pins, stabilizer and fin, windows and wing box.

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Sample Structure and Windows questions with answers

Three questions from the free preview. Think of your answer first, then open the explanation.

  1. 1.What design principle does the 737 Classic structure use against single failures?

    • A.Fail-safe, alternate load paths
    • B.Safe-life, scheduled retirement
    • C.Damage-free, oversized parts
    Show answer and explanation

    Correct answer: A. Fail-safe, alternate load paths

    Alternate load paths mean failure of one member cannot endanger the airplane. Ref 737-300/400/500 AMM 51-00-00.

  2. 2.Where is the 737 Classic forward pressure bulkhead?

    • A.Body station 360
    • B.Body station 540
    • C.Body station 178
    Show answer and explanation

    Correct answer: C. Body station 178

    The bulkhead at BS 178 is the forward pressure bulkhead; the radome ahead of it is non-structural. Ref 737-300/400/500 AMM 53-00-00.

  3. 3.Where is the 737 Classic rear pressure bulkhead?

    • A.Body station 1016
    • B.Body station 1156
    • C.Body station 727
    Show answer and explanation

    Correct answer: A. Body station 1016

    The rear pressure bulkhead is at BS 1016; section 48 aft of it is not pressurized. Ref 737-300/400/500 AMM 53-00-00.

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Part of the Boeing 737 Classic B1.1 type course

One chapter of the Boeing 737 Classic B1.1 type course question bank, for the 737-300/400/500 with CFM56-3 engines, written in our own words for revision. Your type course and the aircraft maintenance manual stay the authority: limits and procedures can differ between airframes and operators.

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