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Fuel flow per hour is 22 US GAL, total fuel on board is 71 IMP GAL. What is the endurance?
  • A
    3 h 52 min
  • B
    3 h 12 min
  • C
    2 h 42 min
  • D
    4 h 32 min

With the conversion side of the flight computer set 71 imperial gallons against the index mark and read 85 us gallons against the respective index mark.

Fuel consumption is given in gallons per hour:

22 (us gallons/hour) = 85 (us gallons) / endurance (h)
Endurance = 85 / 22 = 3º52’

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