| Abbreviation | Definition |
|---|---|
| FIS-B | Flight Information Service- Broadcast |
| FIT | Final Integration Team |
| FIT | First Officer Instrument Tie |
| FIT | First Officer Instrument Transfer |
| FL | Flight Level |
| FLA | Fin Load Alleviation |
| FLBK | Flight Book |
| FLCH | Flight Level Change |
| FLE | Fixed Leading Edge |
| FLO | Flying Low On .... |
| FLPS | FLight Planning System |
| FLY24 | Fly 24 was brief reference re/Flying B24 Liberator Bombers. |
| FM | Flight Model |
| FM | Front Midsection |
| FMC | Flight Management Computer |
| FME | Floor-Mounted Equipment |
| FMF | Flight Management Function |
| FMGC | Flight Management And Guidance Computer |
| FMN | Four Corners Regional Airport, Farmington, New Mexico USA |
| FMS | Flight Management System |