| Acronym | Meaning |
| DEL | Deliver |
| GRTLS | Glide Return To Landing Site |
| CAPCOM | Capsule Communicator |
| ESTA | Electronic System Test Equipment |
| LDR | LowData Rate |
| RCHCS | Regenerable CO And Humidity Contro SYstem |
| IMDB | Integrated Maintenance Data Base |
| P&I | Performance And Interface (Specification) |
| UT&GS | Uplink Text And Graphics System |
| U | Uranium |