Type training · Boeing 767 B1.1 · ATA 77

Boeing 767 B1.1: CF6-80C2 Engine Indicating (ATA 77)Type training questions & answers

N1 and N2 sensors, N2 speed cards, EGT probes and limits, condition monitoring, SEI and vibration.

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Sample CF6-80C2 Engine Indicating questions with answers

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

  1. 1.What is the primary thrust indication on the 767 CF6-80C2?

    • A.N2
    • B.N1
    • C.EPR
    Show answer and explanation

    Correct answer: B. N1

    N1 (fan speed) is the primary thrust parameter on the GE-powered 767.

  2. 2.What does the standby engine indicator (SEI) show?

    • A.EPR, N1 and fuel flow
    • B.Oil pressure and temperature
    • C.N1, N2 and EGT values
    Show answer and explanation

    Correct answer: C. N1, N2 and EGT values

    The SEI is a backup for N1, N2 and EGT if EICAS fails.

  3. 3.What does the propulsion interface monitor unit (PIMU) do?

    • A.Keeps EEC fault history
    • B.Controls the thrust reversers
    • C.Supplies power to the EEC
    Show answer and explanation

    Correct answer: A. Keeps EEC fault history

    EEC faults held in volatile memory are moved to PIMU non-volatile memory after landing, for maintenance.

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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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