| Acronym | Meaning |
| SFCS | Survival Flight Control System |
| TW | Traveling Wave |
| NMAB | National Materials Advisory Board |
| LIQ | Liquid |
| ICDU | Inertial CouPling Data Unit |
| MACO | Major Assembly Checkout |
| DFRC | Hugh L. Dryden Flight Research Center |
| LI | Lithium |
| R | Ratio |
| HSD | HoriZontal Situation Display |