| Acronym | Meaning |
 | PTC | Passive Thermal Control |
 | IT | Identification Transponder |
 | FOB | Flight Operations Building |
 | EAFB | Ellington Air Force Base |
 | RTR | Rotor |
 | SP-ILS | Integrated Logistics Support Office (KSC Shuttle) |
 | QDS | Quality Data System |
 | CAS | Control Augmentation System |
 | VGX | Velocity To Be Gained (Body X-Axis) |
 | RAL | ResPonsibiiitV Aslignment List |