| Acronym | Meaning |
| FCEI | Facility Contractor End Item |
| ITE | Integration Test Equipment |
| DFI | Development Flight Instrumentation |
| ODR | OutPut Data Redundancy |
| H | AlH AlHot |
| SPD | Standard Practice Directive |
| RTAC | Research And Technology Advisory Committee |
| ICC | Intercomputer Channel |
| L/S | LLoad SYstem |
| HVAC | Heating, Ventilating, Air-conditioning |