| Acronym | Meaning |
| BRK | Brake |
| CTR | Centered |
| DASS | Digital Acoustic Sensor Simulator |
| PAT | Preliminary Acceptance Trials |
| PDD | Program Design Description |
| BIC | Bus Interface Controller |
| SPS | Software Porduct Specification |
| IND | Indicator |
| LGCU | Landing Gear Control Unit |
| MPC | Mission Phase Code |