| Acronym | Meaning |
| PCS | Procedure Completion Sheet |
| CDI | Course Deviation Indicator |
| LOS | Loss Of Sync |
| SB | Speed Brake |
| CIU | Computer Interface Unit |
| TPF | Transfer Phase Final |
| DCS | Digital Command System (Subsystem) |
| ISS | Integrated System Schematic |
| GOE | GrGOEGround Operating EquiPMent |
| LGIU | Laser Gyro Interface Unit |