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Discussion

Consider the following statements about weight and balance in service:

1. Fuel burn moves the centre of gravity as tanks empty in sequence.

2. A loading diagram demonstrates that permitted loadings stay within the envelope.

3. Passenger seating position has no effect on the centre of gravity.

Which of the statements given above is or are correct?

  • A.2 and 3 only
  • B.1, 2 and 3
  • C.1 and 2 only
  • D.1 and 3 only

Answer: C

Correct answer: 1 and 2 only

Statements 1 and 2 are correct: the centre of gravity moves as tanks empty in their programmed sequence, and the loading diagram exists to demonstrate that every permitted loading stays inside the envelope. Statement 3 is plainly false - where passengers sit is one of the largest sources of centre of gravity variation, which is why load sheets allocate seating by zone.

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