| Acronym | Meaning |
| DEV | Develop |
| DOC | Document |
| OS | Orbiter CEI Specification |
| M | ESAMiniature Electrostatic Accelerometer |
| PS | Prime Select |
| OST | Orbiter SuPport Trolley |
| CSCSAT | Commercial Synchronous Communication Satellite |
| BARB | Ballast Aerating Retrieval Boom |
| NRTS | Not Repairable At This Station |
| FSD | Flight Simulation Division (JSC) |