Type training · Boeing 767 B1.1 · ATA 71

Boeing 767 B1.1: CF6-80C2 Power Plant, Cowls and Mounts (ATA 71)Type training questions & answers

Engine data, inlet, fan and core cowls, reverser opening system, mounts, drains and hazard areas.

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Sample CF6-80C2 Power Plant, Cowls and Mounts questions with answers

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

  1. 1.What type of engine is the CF6-80C2F on the 767-300?

    • A.Low bypass, three-spool turbofan
    • B.High bypass, geared single-rotor fan
    • C.High bypass, dual-rotor axial turbofan
    Show answer and explanation

    Correct answer: C. High bypass, dual-rotor axial turbofan

    The CF6-80C2F is a high bypass ratio, axial flow, dual-rotor (N1 and N2) turbofan with FADEC control.

  2. 2.Where are the CF6-80C2 engine data and identification plates?

    • A.On the core cowl inner skin
    • B.On the right fan case
    • C.On the left fan case
    Show answer and explanation

    Correct answer: C. On the left fan case

    Both the engine data plate and the engine assembly identification plate are on the left fan case.

  3. 3.What is the approximate bypass ratio of the CF6-80C2B7F?

    • A.About 3 to 1
    • B.About 5 to 1
    • C.About 8 to 1
    Show answer and explanation

    Correct answer: B. About 5 to 1

    The bypass ratio is about 5.15 to 1, with an overall compressor pressure ratio near 30 to 1.

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Part of the Boeing 767 B1.1 engine and APU course

One chapter of the Boeing 767 B1.1 engine and APU course question bank, for the 767-300 with GE CF6-80C2 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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