| Acronym | Meaning |
| RV | Relief Valve |
| TURB | Trainer Update Review Board |
| TECD | Training Equipment Change Directive |
| RAM | Random Access Memory |
| DEP | Draft Equipment Publication |
| PAT | Preliminary Acceptance Trials |
| HSI | Hardware/software Integration |
| ACSUBS | Aircraft Subsystems |
| SOMM | System Organizational Maintenance Manuals |
| ECMA | European Computer Manufacturer's Associations |