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Given the following information, calculate the trip fuel in US gallons.

Distance: 148 NM
TAS: 100 kt
Headwind: 8 kt
Fuel flow: 6.8 USG/hr

  • A

    9 USG

  • B

    14 USG

  • C

    7.8 USG

  • D

    11 USG

1. Calculate the Groundspeed:

  • GS = TAS - Headwind
  • GS = 100 kt - 8 kt = 92 kt

2. Calculate the Trip time:

  • Trip time = Distance / Groundspeed
  • Trip time = 148 NM / 92 kt = 1.6 hr

3. Calculate the Trip fuel in USG:

  • Trip fuel = Fuel flow x Trip time
  • Trip fuel = 6.8 USG/hr x 1.6 hr = 10.94 USG, closest answer 11 USG

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