Type training · Boeing 777 B2 · ATA 70–80
Boeing 777 B2: Trent 800 Engine Systems (ATA 70–80)Type training questions & answers
EEC power and OPU, ignition, thrust levers, EPR and EGT, vibration, reverser indicating, oil sensing and starting.
- A worked explanation on every question
- Written for the 777 avionics
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Sample Trent 800 Engine Systems questions with answers
Three questions from the free preview. Think of your answer first, then open the explanation.
1.What is the inlet hazard radius of a 777 Trent 800 at idle?
- A.About 15 ft (4.6 m)
- B.About 63 ft (19.2 m)
- C.About 5 ft (1.5 m)
Show answer and explanation
Correct answer: A. About 15 ft (4.6 m)
About 15 ft at idle and 63 ft at takeoff thrust. Ref Olympic RR Trent 800 training manual, ATA 71.
2.When may you approach a running Trent 800 through the entry corridor?
- A.At any thrust below takeoff
- B.At idle reverse thrust only
- C.Idle forward, with contact
Show answer and explanation
Correct answer: C. Idle forward, with contact
Only with the engine at idle (forward thrust) and with communication to the flight deck. Ref Trent 800 training manual, ATA 71.
3.What powers the Trent 800 PDOS pump motor?
- A.28V DC battery bus
- B.The engine dedicated alternator
- C.115V AC ground handling bus
Show answer and explanation
Correct answer: C. 115V AC ground handling bus
The motor uses 115V AC from the ground handling bus; the switches and solenoids use 28V DC ground handling. Ref Trent 800 training manual, ATA 71-12.
Part of the Boeing 777 B2 type course
One chapter of the Boeing 777 B2 type course question bank, for the 777 avionics, 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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