Type training · Boeing 777 B2 · ATA 22
Boeing 777 B2: Auto Flight (ATA 22)Type training questions & answers
AFDCs, backdrive actuators, autopilot engagement, AFDS modes, autoland status and the TMCF.
- A worked explanation on every question
- Written for the 777 avionics
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Sample Auto Flight questions with answers
Three questions from the free preview. Think of your answer first, then open the explanation.
1.Which systems ARINC 629 bus does the left AFDC use?
- A.The left systems bus
- B.The right systems bus
- C.The center systems bus
Show answer and explanation
Correct answer: A. The left systems bus
The left AFDC transmits and receives on the left systems ARINC 629 bus. Ref AMM 22-11-00.
2.Where does the right AFDC receive flight controls data from?
- A.The left and right flight controls 629 buses
- B.All three flight controls ARINC 629 buses
- C.The onside flight controls ARINC 429 bus
Show answer and explanation
Correct answer: B. All three flight controls ARINC 629 buses
Each AFDC listens to all three flight controls ARINC 629 buses. Ref AMM 22-11-00.
3.Which AFDCs connect to the backdrive actuators?
- A.Left and center only
- B.Right and center only
- C.Left and right only
Show answer and explanation
Correct answer: C. Left and right only
Only the left and right AFDCs drive the backdrive actuators. Ref AMM 22-11-00.
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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