Type training · Boeing 767 B1.1 · ATA 49

Boeing 767 B1.1: APU Fuel, Starting and Air (ATA 49)Type training questions & answers

Fuel control unit, flow divider, start sequence, ignition, air intake door, inlet sensors and IGVs.

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Sample APU Fuel, Starting and Air questions with answers

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

  1. 1.Where does the 767 APU get its fuel?

    • A.Right fuel feed manifold
    • B.The center tank directly
    • C.Left fuel feed manifold
    Show answer and explanation

    Correct answer: C. Left fuel feed manifold

    Through a flexible shrouded line from the left fuel feed manifold.

  2. 2.Besides combustion, what is APU fuel used for?

    • A.Operating the IGV actuator
    • B.Cooling the generator oil
    • C.Driving the cooling fan
    Show answer and explanation

    Correct answer: A. Operating the IGV actuator

    Fuel pressure is the muscle for the inlet guide vane actuator.

  3. 3.How does the ECU meter APU fuel?

    • A.A mechanical governor
    • B.A torque motor on the FCU
    • C.A stepper motor in the HMU
    Show answer and explanation

    Correct answer: B. A torque motor on the FCU

    The ECU controls excitation current to a torque motor metering valve in the fuel control unit.

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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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