| Acronym | Meaning |
| RC | Recurring Cost |
| CCA | Contract Change Authorization |
| EOS | Emergency Oxygen System |
| OLIF | Orbiter Landing Instrumentation Facilities |
| CRR | Critical Requirements Review |
| IFTM | In-Flight Test Maintenance |
| SIPS | Small Instrument Pointing System |
| RFB | Request For Bid |
| SILTS | Shuttle Infrared Leeside Temperature Sensing |
| DH | Decision Height |