| Acronym | Meaning |
 | PSS | Pad Safety Supervisor |
| KOPS | Thousand Of Operations Per Second |
| ECRA | Engineering Change Request/Authorization |
| ECF | Equivalency Capability File |
| SOCA | R Shuttle Operational Capability Assessment Report |
| SAS | Solar Array SYstem |
| KCRT | Keyboard Cathode RaY Tube |
| EVO | Engineering Verification Order |
| E/M | Engineering Model |
| HW | Hotwire |
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