| Acronym | Meaning |
| PMU | PCM Master Unit |
| PMM | Property Management Manual |
| MSF | Maintenance Source File |
| SSUS | Spinning Solid Upper Stage |
| EAM | Electrical Accounting Machine |
| FCMU | Foot Controlled Maneuvering Unit |
| LO | Local Oscillator |
| SPIDPO | Shuttle Payload Integration And Development Program Office |
| RAPS | Right AFT Propulsion System |
| OS | On-Orbit Station |