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When air-ground data link is used, automated routine observations should be made (reports of air temperature, wind and turbulence). What is correct about aircraft not equipped with air-ground data link equipment?
  • A
    They shall be exempt from making regular reports, unless specifically requested by ATC.
  • B
    They are required to make regular reports, regardless of position.
  • C
    They are only required to make reports upon passing reporting points, not more than 30 minutes every time.
  • D
    They are only required to report once, immediately after being requested.

ICAO Annex 3
Chapter 5. Aircraft Observations and Reports
5.4 Routine aircraft observations - exemptions

Aircraft not equipped with air-ground link shall be exempted from making routine aircraft observations.

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