| Acronym | Meaning |
 | RUT | Resource Utilization Time |
 | FU | Flight Unit |
 | NSS | Nitrogen Supply Subsystem |
 | M | BACMarshall Booster Assembly Contractor |
 | OAT | Overall Test |
 | EO | Earth Orbit |
 | DEV | Develop |
 | BAC | Booster Assembly Contractor |
 | SODS | Skylab Orbit-Deorbit System |
 | ELMCH | Electromechanical |