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(For this question use annex 033-047 rev. 05.11.2004).
A turbojet aeroplane is flying using the following data below. What is the ground distance that can be covered during the cruise flight?

Flight level: FL250
Long Range (LR) cruise Mass: 150 000 kg
Temperature: ISA
Headwind component: 100 kt
Remaining flight time: 1 hour 40 minutes

  • A
    445 NM
  • B
    612 NM
  • C
    2031 NM
  • D
    841 NM

Find Weight 150,000 kg, Read TAS 369 kts
Aircraft experiences 100 kt Headwind
Ground speed = 369 kt - 100 kt = 269 kt GS
1 hr 40 x 269 = 448 nm

445 NM is the closest answer.

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