| Acronym | Meaning |
| CIR | Configuration Inspection Report |
| KAU | Kilo Accounting Unit |
| SCL | Specification Change Log |
| TDU | Time Display Unit |
| ME | Main Engine |
| SDM | Subsystem Design Manuals |
| M | DSDMate/Demate Stiffleg Derrick |
| MSOCC | Multisatellite Operations Control Center |
| RECS | Representative Shuttle Environmental Control System |
| MERL | Materials Engineering Research Laboratory |