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The fuel fraction obtained from the mission is normally increased by a few per cent to allow for

  • A.Reserves and unpumpable fuel
  • B.Passenger baggage
  • C.Engine oil
  • D.Crew weight

Answer: A

Regulatory reserves, a diversion allowance and fuel that cannot be pumped out all add to the mission figure. A factor of about six per cent is a common conceptual allowance, refined later against the actual reserve policy.

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