Aviation abbreviation

HIWAS

HIWAS stands for “hazardous inflight weather advisory service” (General usage). Got a NOTAM full of contractions? Paste it into the decoder.

Related abbreviations

HIHIALSHIBALHIEATHIEFMHIESEHIESLHIFORHIRIVHIRLHITMPHIXAT

Source: FAA Order JO 7340.2 Contractions. Not for operational use.