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An aircraft is planned to fly from Point A to Point B, a distance of 235 NM, at a TAS of 90 kts, experiencing a tailwind of 5 kt. If the cruise fuel flow is 8.5 USG/hr, 3 USG are required for take-off and climb to reach the cruising altitude, and the reserve fuel requirement is 9 USG, how much is the total fuel required?

  • A

    30 USG

  • B

    35 USG

  • C

    37 USG

  • D

    33 USG

1. Calculate the groundspeed:

  • GS = TAS + Tailwind
  • GS = 90 kt + 5 kt = 95 kt

2. Calculate the flight time:

  • Flight time = Distance / GS
  • Flight time = 235 NM / 95 kt = 2.47 hr

3. Calculate the cruise fuel consumption:

  • Cruise fuel = Flight time x Cruise fuel flow
  • Cruise fuel = 2.47 hr x 8.5 USG/hr = 21 USG

4. Calculate the total fuel required:

  • Total fuel required = Take-off and climb + Cruise + Reserve fuel
  • Total fuel required = 3 USG + 21 USG + 9 USG = 33 USG

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