| Acronym | Meaning |
 | SACS | SADshuttle AuthorizedDocument |
| IED | Interacting Equipment Documents |
| CAP | Cost Account Package |
| SIE | Shuttle Interface Equipment Services |
| MODEM | Modulator-Demodulator |
| FLTSATCOM | Fleet Satellite Communications |
| SACS | Systems Software Avionics Command SuPport |
| FCEF | Flight Crew Equipment Facility |
| ISL | Inertial Systems Laboratory |
| PSSU | Patch Survey And Switching Unit |
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