| Acronym | Meaning |
| OSDH | Orbiter System Definition Handbook |
| PIP | Plant Instrumentation Program |
| VAR | Verification Analysis Report |
| NRTS | Not Repairable At This Station |
| SLAHTS | Stowage List And Hardware Tracking System |
| MAL | Material Allowance List |
| DAL | Data Accession List |
| R | IMPMinimum Range To Avoid Plum Impingement |
| MPIIN | Modification Procurement Instrument Identification |
| GRO | Gamma Ray Observatory |