| Acronym | Meaning |
| TRS | Teleoperator Retrieval System |
| H | AlH Altitude |
| O/ET | Orbiter/External Tank |
| MDR | Missing Data Report |
| MILA | Merritt Island Launch Area |
| TPM | Technical Performance Measurement (System) |
| SLAC | Stanford Linear Accelerator Center |
| SEACF | Support Equipment Assembly And Checkout Facility |
| DCR | Document Change Record (or Review) |
| PTA | Positest Analysis |