| Acronym | Meaning |
| RBC | Rotating Beam Ceilometer |
| MEL | Master EquipmentList |
| STD | LStandard Distribution List (letter Denoting Which List |
| INTVLM | Intervalometer |
| MPVA | Main Propellant Valve Actuator |
| JPL | Jet Propulsion Laboratory |
| HTC | Hybrid Technol Ogy ComPuter |
| LVL | Level |
| CPD | R Contractor's Preliminary Design Review |
| TASPR | TATITotal Air TemPerature Indicator |