| Acronym | Meaning |
 | TIP | Trainer Improvement Program |
| QEC | Quick Engine Change (tdc 03) |
| TACNAV | Tactical Navigator |
| EAPS | Engine Air Particle Separator |
| LASC | Lockheed Aeronautical Systems Company |
| APB | Self-propelled Barracks Ship (misc) |
| APPR | Approach |
| ITRO | Interservice Training Review Organization |
| PBR | River Patrol Boat (river/roadstead Craft) |
| IDS | Interface Design Specification Udi-e-21403/mod |
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