| Acronym | Meaning |
| TRQ | Torque |
| ECL | Engine Control Lever |
| PECP | Preliminary Engineering Change Proposal |
| EHV | Electro Hydraulic Valve |
| ST | Self Test |
| PPPI | Preplanned Product Improvement |
| TESSDL | Training Equipment Sub-system Data List |
| JRMB | Joint Requirements And Management Board |
| NWSA | Nose Wheel Steering Actuator |
| PDS | Program Design Spec Udi-e-21268b/mod |