| Acronym | Meaning |
| PCM | Pulse Code Modulator |
| PDRS | Payload Deployment And Retrieval System(s) |
| ME | Miscellaneous Equipment |
| CTL | Central Or Control |
| CPD | Crew Passive Dosimeter |
| PDV | Pressure Disconnect Valve |
| SFPS | Single Failure Point Summary |
| DI | Display Interface Processor (Software Functional Element) |
| NO | Not For Off -KSC Distribution |
| OSF | Ordnance Storage Facility |