| Acronym | Meaning |
| NAC | Naval Administrative Command |
| YM | Dredge (self-propelled)(misc) |
| PPBIT | Pre-periodic Built-in Test |
| SPO | Systems Program Office |
| CHMS | Copilot Helmet Sight System |
| R&M | Reliability And Maintainability |
| PS | Particle Separater |
| AAC | Aircraft Armament Change (tdc 56) |
| DPRO | Defense Plant Representative Office |
| SVIP | Secure Voice Improvement Program |