| Acronym | Meaning |
| DFS | Directional Finding System |
| PCS | Payload Checkout System |
| M | ESAModular Equipment Stowage Assembly |
| OZ | Ozone |
| FCH | L Flight Control Hydraulics Laboratory |
| VEH | Vehicle |
| GSE | Ground Servicing Equipment |
| IDRD | Information Definition Requirements Document |
| HYPACE | Hybrid Programmable Attitude Control Electronics |
| RETEN | Retention |