| Acronym | Meaning |
| PL | Postlanding (P/L Preferred) |
| MSFN | Manned Space Flight Network |
| PBDM | Payload Bay Door Mechanism |
| VLPS | Vandenberg Launch Processing System |
| TSP | Test Software Program |
| SPIMS | Shuttle Program Information Management System |
| RSS | Range SafetySwitch |
| PRM | Posigrade Rocket Motor |
| RZ | Return-to-Zero |
| IC | Intercomputer Communication |