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Assertion (A): The mission segment fuel fraction is increased by a few per cent before use.

Reason (R): Regulatory reserves, diversion allowance and unpumpable fuel are not part of the mission calculation.

Select the correct answer from the options below.

  • A.Both A and R are true, but R is not the correct explanation of A
  • B.A is true but R is false
  • C.A is false but R is true
  • D.Both A and R are true, and R is the correct explanation of A

Answer: D

Correct answer: Both A and R are true, and R is the correct explanation of A

Both are true and the reason is exactly why. The mission fraction accounts for the fuel burned flying the stated mission and nothing else. Regulatory reserves, the diversion to an alternate, the hold, and the fuel that cannot be pumped out of the tanks are all real fuel that must be loaded, so the mission figure is increased by a few per cent before the tanks are sized.

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