| Acronym | Meaning |
| SAR | Search And Rescue |
| MLS | Microwave Landing System |
| TEECP | Training Equipment Engineering Change Proposal |
| EAB | Emergency Air Breathing (comm Sys For Submarines) |
| MOSFET | Metal Oxide Semiconductor-field Effect Transistor |
| PHC | Photographic Change (tdc 68) |
| INU | Inertial Navigation Unit |
| EOTAD | Electro-optics Target Acquisition And Designation |
| LRU | Line Replaceable Unit |
| AGEH | Hydrofoil Research Ship (misc) |