| Acronym | Meaning |
| EOUT | Engine Out |
| ABIU | Avionics Bay Interface Unit |
| IDS | Interface Design Specification Udi-e-21403/mod |
| HDC | Helicopter Direction Center |
| LCN | Logistic Support Analysis Control Number |
| RPU | Rotor Phasing Unit |
| NFO | Navy Finance Office |
| MIC | Microphone |
| CIC | Combat Information Center |
| QEB | Quick Engine Bulletin (tdc 04) |