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Division (a) Special observations shall be made and reported by all aircraft whenever the following conditions are encountered or observed:

United Kingdom

Original text. Later amendments are not shown.

  1. (1)

    moderate or severe turbulence; or

  2. (2)

    moderate or severe icing; or

  3. (3)

    severe mountain wave; or

  4. (4)

    thunderstorms, without hail, that are obscured, embedded, widespread or in squall lines; or

  5. (5)

    thunderstorms, with hail, that are obscured, embedded, widespread or in squall lines; or

  6. (6)

    heavy dust storm or heavy sandstorm; or

  7. (7)

    volcanic ash cloud; or

  8. (8)

    pre-eruption volcanic activity or a volcanic eruption F1; or

  9. (9)

    the runway braking action encountered is not as good as reported

Annotations

Textual amendments

F1

Annex Section 12 SERA.12005 point (a)(9) and word inserted (23.3.2023) by The Aviation Safety and Air Traffic Management (Amendment) Regulations 2022 (S.I. 2022/1235), regs. 1(3), 5(5)