| Acronym | Meaning |
 | DMIS | Data Management Information System |
| PIC | Programmable Interval Clock |
| NOC | Network Operation Control |
| OHA | Orbital Height Adjustment Maneuver |
| M50 | Mean Of 1950 (Coordinate System) |
| SSO | Subsystem Operation (in Spacelab) |
| HERSCP | Hazardous Exposure Reduction And Safety Criteria Plan |
| TLCE | Transmission Line Conditioning Equipment |
| MO | Manned Orbiter |
| CCC | Communication(s) Control Console |
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