| Acronym | Meaning |
 | MFC | Multiple Flight Controller |
 | PDV | Pressure Disconnect Valve |
 | PSSU | Patch Survey And Switching Unit |
 | IED | Interacting Equipment Documents |
 | KSSS | KSC Station Set Specification |
 | OTP | Operations Test Plan |
 | SPS | Shuttle Procedures Simulator |
 | MTA | Maintenance Task Analysis |
 | DODD | Department Of Defense Directive |
 | LOFAR | Low Frequency Acquisition And Ranging |