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Calculate the TAS for an aircraft flying a distance of 125 NM in 1 hour 08 minutes, experiencing a tailwind of 6 kt. 

  • A

    98 kts

  • B

    116 kts

  • C

    110 kts

  • D

    104 kts

1. Convert flight time to decimal hours:

  • 1 hr and 08 min = 1 + 8/60 = 1.13 hr

2. Calculate the Groundspeed:

  • GS = Distance / Time
  • GS = 125 NM / 1.13 hr = 110 kt

3. Calculate True Airspeed (TAS):

  • Tailwind: 6 kt, thus, GS is greater than TAS
  • TAS = GS - Tailwind
  • TAS = 110 - 6 KT = 104 kts

Note: The relationship between GS nad TAS is given by the formulae:

  • GS = TAS + Tailwind component
  • GS = TAS - Headwind component

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