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Refer to figure.
With regard to the given OFP, which statement is correct concerning the ground speed experienced between WPT1 and WPT2 when the accumulated flight time after this segment was equal to 27 minutes?
  • A
    The GS is approximately 100 kt lower than expected.
  • B
    The GS is approximately 40 kt lower than expected.
  • C
    The GS is equal to approximately 67 kt.
  • D
    The GS is equal to approximately 100 kt.

Refer to figure.

Ground Speed = Distance / Flight Time
The distance between WPT 1 and WPT 2 = 30 NM
Note that the question text states that the accumulated flight time was 27 min => that is the time taken to fly from the Departure to WPT 2. Flight time between WPT 1 - WPT 2 = 27 min - 9 min = 18 min.

  • Ground Speed = 30 NM / 18 min = 100 kt

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