Multiple choice

ATC is to be notified if the TAS during a flight changes by

  1. 5%

  2. 10%

  3. 15%

  4. 20%
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Air Traffic Control (ATC) must be notified if True Airspeed (TAS) changes by 5% or more during flight. This requirement allows ATC to maintain accurate separation and traffic flow. Speed changes beyond 5% can affect timing for waypoints, approaches, and conflict prediction.

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