Type training · Boeing 777 B1.1 · ATA 29
Boeing 777 B1.1: Hydraulic Power (ATA 29)Type training questions & answers
Left, center and right systems, EDPs, ACMPs and ADPs, center isolation, RAT and reservoirs.
- A worked explanation on every question
- Written for the 777-200/-200ER with GE90, PW4084 or Trent 800 engines
- Read in English or 15 other languages
Sample Hydraulic Power questions with answers
Three questions from the free preview. Think of your answer first, then open the explanation.
1.Before pressurizing the 777 hydraulic systems with the pumps, what must you make sure of?
- A.Reservoirs not over- or underfilled
- B.Enough main tank fuel for cooling
- C.No fluid transfer between center and right
Show answer and explanation
Correct answer: B. Enough main tank fuel for cooling
The hydraulic heat exchangers are in the main fuel tanks, so there must be enough fuel to cool them. Ref AMM 29-00-00.
2.Two of the four HYDIM cards control the functions for which system?
- A.The right system
- B.The center system
- C.The left system
Show answer and explanation
Correct answer: B. The center system
Two HYDIM cards serve the center system; the left and right systems have one each. Ref AMM 29-10-00.
3.What happens to hydraulics when an engine fire switch is operated?
- A.The related pumps are switched off
- B.EDP supply shuts off; it depressurizes
- C.The pump outlet is ported to return
Show answer and explanation
Correct answer: B. EDP supply shuts off; it depressurizes
The fluid supply to the related EDP shuts off and the pump depressurizes. Ref AMM 29-10-00.
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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