| Acronym | Meaning |
| PAM | Payload Assist Module |
| SEM | Seller's Engineering Memo |
| SMT | Selective Message Transaction |
| TAA | Technical Assistance Agreement |
| FAWG | Flight Assignment Working Group |
| DUA | Digital Uplink Assembly |
| S/8 | Standby |
| EPDS | Electrical Power And Distribution Subsystem |
| CPC | I Computer Program Change Instruction |
| SPE | Solid Polymer Electrolysis |