| Acronym | Meaning |
![](file.png) | OMDR | Operations And Maintenance Data Record |
![](file.png) | OMDRI | Operations And Maintainability Data Record |
![](file.png) | OME | Orbital Main Engine |
![](file.png) | OMET | Orbiter Mission Elapsed Time |
![](file.png) | OMEWG | Orbiter Maintenance Engineering Working Group |
![](file.png) | OMI | Operations And Maintenance Instruction |
![](file.png) | OMIS | Operational Management Information System |
![](file.png) | OMISS | Operation And Maintenance Instruction Summary Sheet(s) |
![](file.png) | OML | Orbiter Mold Line |
![](file.png) | OML | Outer Mold Line |
![](file.png) | OML | Outside Mold Line |
![](file.png) | OMMH | Orbiter Maintenance Man-Hours |
![](file.png) | OMNI | Omnidirectional |
![](file.png) | OMNI | Omni-Range |
![](file.png) | OMP | Operations And Maintenance Plan |
![](file.png) | OMPR | Operational Maintainability Problem Reporting |
![](file.png) | OMPT | Observed Mass Point Trajectory |
![](file.png) | OMR | Operations And Maintenance Requirements |
![](file.png) | OMR | Operations Management Room |
![](file.png) | OMR | Orbiter Management Review |
![](file.png) | OMRB | Operating Material Review Board |
![](file.png) | OMRC | Operational Maintenance Requirements Catalog |
![](file.png) | OMRF | Orbiter Modification And Refurbishment Facility |
![](file.png) | OMRP | Operations And Maintenance Requirements Plan |
![](file.png) | OMRSD | Document |
![](file.png) | OMRSD | O&M Requirements And Specifications Documentation |
![](file.png) | OMRSD | Operational Maintainability Reporting Systems Document |
![](file.png) | OMRSD | Operational Maintenance Requirements And Specification |
![](file.png) | OMS | Orbital Maneuvering Subsystem |
![](file.png) | OMS | Orbital Maneuvering System |
![](file.png) | OMSF | Office Of Manned Space Flight (now OSTS) |
![](file.png) | OMSP | Operational Maintenance Support Plan |
![](file.png) | OMU | Optical Measuring Unit |
![](file.png) | OMV | Oxygen Manual Valve |
![](file.png) | ONBD | Onboard |
![](file.png) | ONBT | Orbiter Neutral Buoyancy Trainer |
![](file.png) | OND | Operator Need Date |
![](file.png) | ONR | Office Of Naval Research |
![](file.png) | OOD | OrbiterOn-Dock |
![](file.png) | OODP | Out-of-Detent Pitch |
![](file.png) | OODR | Out-of-Detent Roll |
![](file.png) | OOMM | Organizational Operations And Maintenance Manual |
![](file.png) | OOP | Out Of Position |
![](file.png) | OOS | On-Orbit Station |
![](file.png) | OOS | Orbit-to-Orbit Shuttle |
![](file.png) | OOS | Orbit-to-Orbit Stage |
![](file.png) | OOSDP | On-Orbit Station Distribution Panel |
![](file.png) | OOT | Out Of Tolerance |
![](file.png) | OP | Open |
![](file.png) | OP | Operate |