| Acronym | Meaning |
| PHB | Photographic Bulletin (tdc 69) |
| EAPS | Engine Air Particle Separator |
| NOSC | Naval Ocean Systems Center |
| WRA | Weapons Replaceable Assembly |
| V&V | Verification And Validation |
| RFI | Ready For Issue |
| OSR | On Site Representative |
| MDMDS | Modular Data System |
| SAC | System Auxiliary Computer |
| WSHLD | Windshield |