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Refer to figure.
An extract from a typical flight plan produced by an airline flight planning tool. Assume that the fuel flow remains the same as experienced between OKEPI and OKIRA and that the actual times between the waypoints are as planned. What is the estimated remaining fuel overhead MOKIP?
  • A
    5540 kg
  • B
    5499 kg
  • C
    5319 kg
  • D
    5550 kg

Refer to figure. 
For this question, to find the remaining fuel overhead MOKIP, the actual fuel flow is required and can be found using the actual data from OKEPI to OKIRA:

  • The actual flight time from OKEPI to OKIRA is: 17:59 - 17:58 = 1 min and it burns: 5990 kg - 5950 kg = 40 kg.
  • Thus, the aircraft's fuel flow is: 40 kg/min.

The flight time from OKIRA to MOKIP is: 2 min + 2 min+ 6 min = 10 min. So, the fuel required from OKIRA to MOKIP will be: 10 min x 40 kg/min = 400 kg.

Therefore, the remaining fuel overhead MOKIP will be: Remaining fuel overhead OKIRA - Fuel required from OKIRA to MOKIP = 5950 kg - 400 kg = 5550 kg.

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