| Acronym | Meaning |
| PCD | Procurement Control Document |
| RTA | Real-Time Accumulator |
| PAS | Primary Ascent System |
| RHCM | Relative Humidity Control/Monitor |
| FCTB | Flight Crew Training Building |
| KCAS | Knots Calibrated Airspeed |
| NDTL | Nondestructive Test Laboratory |
| ESRIN | European Space Research Institute |
| FR | Flight Rule |
| SP | Spare |