Practice question

What is the standard time-averaging period for surface wind information provided by an Aerodrome Control Tower controller to an aircraft on takeoff or landing roll?

  1. A 2-minute average for local tower air-ground transmissions (compared to a 10-minute average used in METAR/SPECI reports).
  2. A 1-hour average.
  3. An instantaneous 1-second pulse only.
  4. A 24-hour average.

Answer: A — A 2-minute average for local tower air-ground transmissions (compared to a 10-minute average used in METAR/SPECI reports).

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