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If an aircraft covers a distance of 88 NM in 42 minutes, experiencing a tailwind of 5 kt, what is the TAS?

  • A

    121 kt

  • B

    114 kt

  • C

    126 kt

  • D

    131 kt

1. Convert the time into hours:

  • 42/60 = 0.7 hr

2. Calculate the Groundspeed:

  • GS = Distance / Time
  • GS = 88 NM / 0.7 hr = 126 kt

3. Calculate the True Airspeed:

  • Tailwind = 5 kt
  • Then TAS < GS
  • TAS = GS - Tailwind
  • TAS = 126 kt - 5 kt = 121 kt

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