Practice question

Under ICAO Annex 11, how frequently must the Automatic Terminal Information Service (ATIS) voice/data broadcast be updated at a controlled aerodrome?

  1. Once every 24 hours at midnight UTC
  2. Whenever a new official routine METAR/SPECI is issued or whenever any significant operational/weather change occurs
  3. Exactly every 10 minutes regardless of weather stability
  4. Only when requested by an airline chief pilot

Answer: B — Whenever a new official routine METAR/SPECI is issued or whenever any significant operational/weather change occurs

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