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Given the following information, and taking into account that the fuel was initially calculated with no wind, what is the updated Trip Fuel for the flight?

Trip Fuel (no wind): 2000 kg
Flight time (no wind): 2 hours
Distance: 240 NM
Headwind: 20 kt

  • A
    2333 kg
  • B
    1715 kg
  • C
    2400 kg
  • D
    2340 kg
  • (1) Calculate original Fuel Flow:
2000 kg / 2 h = 1000 kg/h
  • (2) Calculate the original Ground Speed (which equals TAS in no wind conditions):
Ground Speed = Distance / Flight Time
240 NM / 2 h = 120 kt
  • (3) Calculate new Ground Speed (with a 20 kt Headwind):
120 kt - 20 kt = 100 kt
  • (4) Calculate New Flight time:
240 NM / 100 kt = 2. 4 h
  • (5) Calculate Fuel consumed:
2.4 h x 1000 kg/h = 2400 kg

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