| Acronym | Meaning |
| SPA | Steering Position Amplifier |
| BTMS | Body Temperature Measuring System |
| LRU | Line Replaceable Unit |
| PAT | Production Acceptance Test |
| R | Range |
| IMBLMS | Integrated Medical Behavioral Laboratory Measuremen |
| GRTLS | Glide Return To Launch Site |
| DFS | Directional Finding System |
| MHD | Multihead Disc |
| TCP | Task Control Packet |