| Abbreviation | Definition |
|---|---|
| FEB | Forward Equipment Bay |
| FEC | Field Engineering Change |
| FEC | Forward Events Controller |
| FED | Flight Events Demonstration |
| FEDP | Facility and Equipment Design Plan |
| FEHEM | Front-End Hardware Emulator |
| FEID | Flight Equipment Interface Device |
| FEID | Functional Engineering Interface Device |
| FEM | Finite Element Method |
| FEMCPL | Facilities and Environmental Measurement Component Parts List |
| FEP | Flight Evaluation Plan |
| FEP | Fluorinated Ethylene Propylene |
| FEP | Fluoro Ethel Propane |
| FEP | Front-End Processor |
| FERD | Facility and Equipment Requirements Document |
| FES | Flash Evaporator System |
| FES | Flight Element Set |
| FES | Fluid Experiment System |
| FES/VCGS | Fluid Experiment System/Vapor Crystal Growth System |
| FESL | Failure Effects Summary List |