| Acronym | Meaning |
![](file.png) | HYDR | Hydraulic |
![](file.png) | PI | Procurement Instruction |
![](file.png) | TCN | Tacan |
![](file.png) | SSEP | Sub Surveillance Equipment Program |
![](file.png) | RVV | Runway Visibility Value |
![](file.png) | E2 | Exponential Elevation Display |
![](file.png) | YRR | Radiological Repair Barge (non Self-propelled) (misc) |
![](file.png) | DFR | Digital Flight Recorder |
![](file.png) | BCM | Beyond Capability Of Maintenance |
![](file.png) | SSDD | System/segment Design Document |