Type training · Boeing 777 B1.1 · ATA 74–80

Boeing 777 B1.1: Trent 800 Ignition, Air, Reverser, Oil and Starting (ATA 74–80)Type training questions & answers

Ignition, TIC and VSVs, bleed valves, thrust levers, EPR, EGT and AVM, thrust reverser, oil and starting.

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Sample Trent 800 Ignition, Air, Reverser, Oil and Starting questions with answers

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

  1. 1.On the first ground start of a 777 Trent 800, how many ignition units does the EEC power?

    • A.One, changing each start
    • B.Both ignition units together
    • C.Both, then one at 40% N3
    Show answer and explanation

    Correct answer: A. One, changing each start

    On the first ground start (auto or manual) only one ignition unit is powered and the choice changes each ground start. Both are used on a second try and on all in-flight starts. Ref Trent 800 training manual, ATA 74.

  2. 2.At what point in a Trent 800 start does the EEC switch the ignition on?

    • A.25% N3 or max motoring
    • B.15% N3 or at light-up
    • C.When the SCV is fully open
    Show answer and explanation

    Correct answer: A. 25% N3 or max motoring

    Ignition and fuel come on at 25% N3 or maximum motoring speed, whichever is less. Ignition normally goes off at 50% N3. Ref Trent 800 training manual, ATA 74.

  3. 3.Where are the Trent 800 ignition units installed?

    • A.HP case, 4:00 and 8:00
    • B.In the EEC protection box
    • C.Fan case, 9:00 position
    Show answer and explanation

    Correct answer: C. Fan case, 9:00 position

    The two ignition units are on the fan case at 9:00 (left fan cowl). The igniter plugs are on the HP system outer case at 4:00 and 8:00. Ref Trent 800 training manual, ATA 74.

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Part of the Boeing 777 B1.1 type course

One chapter of the Boeing 777 B1.1 type course question bank, for the 777-200/-200ER with GE90, PW4084 or Trent 800 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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