| Acronym | Meaning |
| MTU | Master Timing Unit |
| EMRL | Equipment Maintenance Requirements List |
| DCNP | Document Change Notice Proposal |
| DME | Distance Measur Ng EquiPment |
| SCD | Specification Control Drawing |
| NSR | National Slow Rate |
| EDW | Edwards Air Force Base |
| SCIU | Spacecraft Interface Unit |
| LL | Low Level |
| EMCI | Engineering Model Configuration Inspection |