| Acronym | Meaning |
| RANN | Research Applied To National Needs |
| CEQ | Council On Environmental Quality |
| MIR | Malfunction Investigation Report |
| FMOF | First Manned Orbital Flight |
| RA | Radar Altimeter (R/A Preferred) |
| CBP | Connector Bracket Power |
| RVCF | Remote Vehicle Checkout Facility |
| SEC | Sequential Events Controller |
| RGM | Redundant Gyro Monitor |
| SMD | Special Measuring Service |