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Refer to figure.
Given: Planning data as shown in the Flight Log excerpt (Fuel Planning Section). After a balked landing at the destination airport, you have to divert to the alternate airport with the gear extended.

The re-calculated flight time to the alternate due to the reduced speed is 1 h 10 min and the fuel flow will be 600 kg/h. Final Reserve Fuel remains unchanged. What will be the estimated landing mass at the alternate airport?

  • A
    6689 kg
  • B
    6157 kg
  • C
    5849 kg
  • D
    5457 kg
We are given quite a lot of information, however, this question is quite simple and solved in 2 easy steps:
(1) Calculate the Fuel Consumed to reach the alternate, when: Fuel Flow = 600 kg/h and flight time = 1 h 10
  • 600 kg/h x 1 h 10 = 700 kg
(2) The estimated landing mass at the alternate airport will be equal to the Landing Mass at Destination (found in the attcahed Flight Log excerpt) minus the Fuel Consumed to reach the alternate:
  • 6549 kg - 700 kg = 5849 kg

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