translate English to French: In addition, the AIRMET is used as a tool to amend the GFA for the non-occurrence of a forecast condition and for the occurrence of a non-forecast condition significant to aviation.
En outre, on utilise l'AIRMET comme outil pour réviser la GFA en cas de non-occurrence d'une condition prévue et significative pour l'aviation ou d'occurrence d'une telle condition non prévue.