Type training · Boeing 777 B2 · ATA 27, 28
Boeing 777 B2: Flight Controls and Fuel (ATA 27, 28)Type training questions & answers
PFCS modes and interfaces, HLCS, refuel control, fuel valves, jettison and FQIS.
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- Written for the 777 avionics
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Sample Flight Controls and Fuel questions with answers
Three questions from the free preview. Think of your answer first, then open the explanation.
1.How many modes of operation does the 777 PFCS have?
- A.Three
- B.Four
- C.Two
Show answer and explanation
Correct answer: A. Three
The PFCS has normal, secondary and direct modes. Ref AMM 27-02-00.
2.How do the flight controls ARINC 629 buses interface digitally with other systems?
- A.Through ELMS and the OPAS card files
- B.Via AIMS gateway and systems buses
- C.By direct links to PSEUs, FSEUs and WEUs
Show answer and explanation
Correct answer: B. Via AIMS gateway and systems buses
The AIMS cabinets' data conversion gateway function links the flight controls buses to the systems ARINC 629 buses. Ref AMM 27-02-00.
3.Where do all the analog interfaces with the PFCS go?
- A.To the PCUs
- B.To the AIMS cabinets
- C.To the ACEs
Show answer and explanation
Correct answer: C. To the ACEs
Analog signals such as transducers and LVDTs connect to the actuator control electronics. Ref AMM 27-02-00.
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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