| Acronym | Meaning |
| EC | Engineering Change |
| HOR | Horizontal |
| OPLSM | Operational Phase Logistic Suuport Manager |
| DAMA | Demand Assigned Multiple Access (uhf Satellite) |
| CALC | Calculated |
| CDT | Chargeable Down Time |
| PMCM | Part Mission Capable Maintenance |
| CDIL | Cumulative Damage Index Left Engine |
| PTTI | Precise Time And Time Interval Dissemination And Distribution |
| HORIZ | Horizontal |