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Given the following information, calculate the maximum attainable flight time and range.

Average fuel flow: 31.5 kg/h
Available fuel: 76 kg
TAS: 85 kt
Wind component: 20 kt tailwind

The flight time is (1) _____ and the range is (2) _____.

  • A
    (1) 2 hours 25 minutes; (2) 205 NM
  • B
    (1) 2 hours 41 minutes; (2) 282 NM
  • C
    (1) 2 hours 25 minutes; (2) 253 NM
  • D
    (1) 2 hours 41 minutes; (2) 157 NM

Flight time = ((Available fuel)/(Average fuel flow) = (76 kg)/(31.5 kg/h) = 2.41 hrs = 2 hr and 25 min)

Ground speed = 85 + 20 (Tail wind) = 105 kts

Ground range = Flight time x GS

= 2.41 X 105 = 253 NM

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