The Civil Aviation (Meteorological Service for Air Navigation) Regulations, 2025

32. Special aircraft observations.

Edition: 2026-03-03 · In force

Special observations shall be made by all aircraft whenever the following conditions are encountered or observed—

(a)moderate or severe turbulence;

(b)moderate or severe icing;

(c)severe mountain wave;

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

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

(f)heavy duststorm or heavy sandstorm;

(g)volcanic ash cloud;

(h)pre-eruption volcanic activity or a volcanic eruption.