| Acronym | Meaning |
| POI | Propellant Quantity Indicator |
| EPA | Environmental Protection Agency |
| MMC | Mid Motor Controller |
| GPME | General Purpose Mission Equipment |
| FIR | Fuel Indicating Reading |
| OMRSD | Operational Maintenance Requirements And Specification |
| DOT/CIAP | DOT Climatic Impact Assessment Program |
| ECS | Engine Control SYstem |
| FCP | Flight Correction Proposal |
| LWHS | Lightweight Headset |