GAFOR ("General Aviation Forecast") is a format for reporting weather information for aviation purposes. The GAFOR is used in many European countries. In order to easy transmit and understand GAFOR forecasts, the original (local) names are systematically replaced by a code number. There are two kinds of application:
- In France and Germany for example the GAFOR - Code refers to regions.
- In Switzerland and Austria the code refers to often used or simply usable and therefore predefined routes for crossing the country. This is a special need for the alpine regions, where VFR routing between mountains higher than the physical performance of pilots (oxigene) or the aircraft are common.