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A flight benefits from a strong tailwind which was not forecast. On arrival at destination a straight in approach and immediate landing clearance is given. The Landing Mass will be higher than planned and…

  • A
    the landing distance will be unaffected.
  • B
    the approach path will be steeper and threshold speed higher.
  • C
    the landing distance required will be longer.
  • D
    the approach path will be steeper.

The strong tailwind will result in an increased actual Groundspeed (GS = TAS + tailwind), thus the aircraft will cover the same distance in a less flight time and the trip fuel consumed will be also less, in comparison with the planned trip fuel.

The Landing Mass is equal to the Actual Take-off Mass minus the Trip Fuel. Since, the actual trip fuel consumption reduces, the actual Landing Mass will be greater than the planned on arrival at destination. Also, the given straight in approach and immediate landing clearance will not allow any additional fuel consumption.

Therefore, the higher actual Landing Mass than planned will result in an increased stalling speed and threshold speed, VREF, thus the landing distance required will increase considerably.

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This question has appeared on the real examination, you can find the related countries below.

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