| Acronym | Meaning |
| NRCC | National Research Council Of Canada |
| DB | Deadband |
| CAP | Computer Application Program |
| H | AlH AlHours |
| TPF | Terminal Phase Finalization (Braking) |
| DCN | Document Change Notice |
| MSE | Mechanical Support Equipment |
| ESS | Effective Sunset |
| MEWG | Maintenance Engineering Working Group |
| ENG | Engine |