| Acronym | Meaning |
 | CIS | Component Identification Sheet |
| OA | Office Of Applications (now OSTA) |
| PORB | Production Operations Review Board |
| DHS | Discrete Horizon Sensor |
| OMET | Orbiter Mission Elapsed Time |
| SIG | GEN Signal Generator |
| STA | Structural Test Article |
| GOMS | GrGOMSGround Operations Management System |
| HCMM | Heat Capacity Mapping Mission |
| ETA | Environmental Test Article |
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