Aviation abbreviation

FW/SIFR

FW/SIFR stands for “fixed wing special IFR” (General usage). Got a NOTAM full of contractions? Paste it into the decoder.

Related abbreviations

FW/SVFRFWAFWCFWCSFWDFWDCFWPFWRNGFWSFWU

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