| Acronym | Meaning |
 | ENG | Engine |
| MOS | Metal Oxide Semiconductor |
| LPDM | List Of Physical Dimensions |
| H | LTLHigh Level Test Language |
| FTOH | Flight Team Operations Handbook |
| IARS | Independent Air Revitalization System |
| OST | Orbiter SuPport Trolley |
| TPM | Transfer Phase Midcourse |
| CI | Course (deviation Display) Invalid |
| LC | LaunchCountdown |
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