Icao Doc 8896 //top\\ File

It mandates the use of the ICAO Meteorological Information Exchange Model (IWXXM) using Geography Markup Language (GML) for sharing operational meteorological (OPMET) data, moving away from traditional alphanumeric codes.

The manual emphasizes several core principles that govern all communications: icao doc 8896

Hazardous weather contributes to roughly 20–30% of aviation accidents. By standardizing the detection and communication of phenomena like wind shear, volcanic ash, or severe turbulence, Doc 8896 directly supports risk mitigation. It mandates the use of the ICAO Meteorological

Guidance on using centralized global forecasts for upper-air wind, temperature, and humidity. or severe turbulence

It details the priority of these communications and the procedure for imposing radio silence (SEELONCE MAYDAY/FINI) to clear the frequency.