| Acronym | Meaning |
| AOILL | Add Oil Left Engine |
| PTD | Provisioning Technical Documentation |
| RBL | Right Butt Line |
| UE | User Equipment |
| IRS | Interface Requirements Specification |
| SDRD | Supportability Design Requirements Document |
| FAR | Federal Aviation Regulation |
| QA&R | Quality Assurance And Revalidation |
| WFEL | Wfe Left |
| CCTDA | Cockpit Control Thrust Drive Actuator |