| Acronym | Meaning |
 | TC | Thiokol Corporation |
 | HCED | Hand Controller Engage Driver |
 | HPOP | High Pressure Oxidizer Pump |
 | DMS | Docking Mechanism System (Subsystem) |
 | DMR | Developmental Instrumentation MDM-Right |
 | MTO | Master Timing Oscillator |
 | T/TCA | Thrust/Translation Control Assembly |
 | VGX | Velocity To Be Gained (Body X-Axis) |
 | ARS | Archive And Retrieval Subsystem (PPCU) |
 | DCC | Digital Communications And Control Unit |