| Acronym | Meaning |
| B/A | Buffer Amplifier |
| BAIR | Breathing Air |
| FACO | Factory Acceptance Checkout |
| PP | Power Pole |
| DCNP | Document Change Notice Proposal |
| OPPL | Orbiter Project Parts List |
| OVI | Operational Validation Inspection |
| SPT | Support |
| TGS | Rate Gyro Assembly |
| CLDST | Closed Loop Dynamic Stability Test |