| Acronym | Meaning |
| PLB | Payload Bay |
| SAAS | Shuttle Aerosurface Actuator Simulation |
| IP | Intermediate Pallet |
| TWT | Traveling Wave Tube |
| SPA | Signal Processor Assembly |
| MTVC | Manual Thrust Vector Control |
| GCC | Ground Communications Coordinator |
| NC | No Change |
| MTU | MobileTrainingUnit |
| JPIC | Joint Program Integration Committee |