| Acronym | Meaning |
| HIRAP | High-resolution Accelerometer Package |
| CSSE | Control System Simulation Equipment |
| LFRR | Low Frequency Radio Range |
| ELEC | Electronic |
| T/T | Terminal Timing |
| TB | Terminal Board |
| T. | B.Toggle Buffer |
| GSI | Glide Slope Indicator |
| SLA | ERNO Spacelab Product Assurance Department |
| SACS | SADshuttle AuthorizedDocument |