| Acronym | Meaning |
 | OM | Orbiter Main Engine |
| RTV | Room-temperature Vulcanizing |
| HAL/S | High Order Programming Language For Spacelab Usage |
| LC | Incremental Cost |
| TEMS | Transport Environment Monitoring System |
| MPTA | Main Propulsion Test Article |
| UER | Unique Equipment Register |
| MOS | Metal Oxide On A Substrate |
| RA | Range Area |
| MSE | Maintenance Support Equipment |
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