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When should the ATIS be updated when suddenly thunderstorms are expected at an airport?
  • A
    Immediately.
  • B
    Immediately, however only if lightning is expected.
  • C
    Within 10 minutes from the last update.
  • D
    Within 30 minutes from the last update.

ICAO Annex 11
Chapter 4

4.3.6 Automatic terminal information service (voice and/or data link)
4.3.6.1 Whenever Voice-ATIS and/or D-ATIS is provided:

a) the information communicated shall relate to a single aerodrome;
b) the information communicated shall be updated immediately a significant change occurs;
(...)

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