| Acronym | Meaning |
| DAC | Data Acquisition And Control |
| ECLSS | Environmental Control And Life Support System |
| TT&C | Tracking Telemetry And Control |
| SSMECA | Space Shuttle Main Engine Controller Assembly |
| P&SM | Procurement And Subcontract Management |
| POA | Plan Of Action |
| FA | Final Assembly |
| HRSI | High Temperature Reusable Surface Insulation |
| IFR | Instrument Flight Rules |
| MSN | Mission |