| Acronym | Meaning |
| HA | Apogee Altitude |
| I | LCCS Integrated Launch Control And Checkout System |
| DPP | Data Processing System (Subsystern) |
| ISP | Instrumentation Support Plan |
| V | Voltage |
| DV | Designee For Verification |
| SSA | Shuttle Simulation Aircraft |
| CRSVR | Crossover |
| LEC | Lockheed Electronics Company |
| FREQ | Frequency |