| Abbreviation | Definition |
|---|---|
| FTRD | Functional Test Requirements Document |
| FTS | Federal Telecommunications System |
| FTS | Flight Termination System |
| FTS | Flight Test Station |
| FTS | Fourier Transform Spectrometer |
| FTS | Functional Test Specification |
| FU | Flight Unit |
| FU | FUel |
| FUB | Forward Utility Bridge |
| FUD | First Use Date |
| FUNC | FUNCtion |
| FUNCT | FUNCTional |
| FUO | Follow-Up Output |
| FUS | FUSelage |
| FUS/LF | FUSelage, Lower Forward |
| FUS/UF | FUSelage, Upper Forward |
| FUSE | Far Ultraviolet Spectroscopic Explorer |
| FUSLG | FUSeLaGe |
| FV | Flight Version |
| FV | Front View |