| Acronym | Meaning |
| I | NTC/0INTC/0Integrated Checkout |
| SEND | Shared Equipment Need Date |
| TASPR | TATTechnical Acceptance Team |
| MLS | Microwave Landing System |
| PRS | Power Reactant System (Subsystem) |
| SSO | Subsystem Operation (in Spacelab) |
| JOD | Joint Occupancy Data |
| BOPACE | Boeing Plastic Analysis Capability For Engines |
| TD | Terminal Distributor |
| LGA | Low Gain Antenna |