NASA Acronyms

Alphabetical Listing of NASA Acronyms

• OGS — Quantity Gaging System
• OGV — Oxygen Gage Valve
• OH — Overhaul
• OH — Overhead
• OHA — Operational Hazard Analysis
• OHA — Orbital Height Adjustment Maneuver
• OHC — Onboard Hard Copier
• OHC — Optics Hand Controller
• OHF — Occupational Health Facility
• OHGVT — Orbiter Horizontal Ground Vibration Test
• OHMM — Ohmmeter
• OI — Operational Instrumentation
• OIA — Office Of International Affairs
• OIA — Orbiter Interface Adapter
• OIB — Orbiter Interface Box
• OIC — Orbiter (Orbital) Integrated Checkout
• OIL — Operations Integration Instruction
• OIR — Operations IntegrationReview
• OIS — Operational Intercommunication System
• OIS — Orbiter Instrumentation Systems
• OISR — Open Item Status Report
• OISSP — Office Of Interim Space Station Program
• OIT — Orbiter Integrated Test
• OIV — Oxidizer Isolation Valve
• OIVS — Orbiter Interface Verification Set
• OJT — On-the-Job Training
• OL — Open Loop
• OL — Operational Left DSC Or MDM
• OLDB — On-Line Data Bank
• OLDR — Quick Look Data Reference
• OLF — Orbiter Landing Facility (now SLF)
• OLIF — Orbiter Landing Instrumentation Facilities
• OLOW — Orbiter Lift-off Weight
• OLSA — Orbiter/LPS Signal Adapter
• OLSP — Orbiter Logistics Support Plan
• OM — Operational Mid DSC Or MDM
• OM — Optical Master
• OM — Orbital Maneuvering Engine
• OM — Orbiter Main Engine
• OM — Outer Marker (ILS)
• OM — RS Operations And Maintenance Requirements Specification
• OMA — Operations Maintenance Area
• OMA — Orbiter Maintenance Area
• OMB — Office Of Management And Budget
• OMBUU — Orbiter Midbody Umbilical Unit
• OMC — Orbiter Maintenance And Checkout
• OMCF — Operations And Maintenance Control File
• OMCF — Orbiter Maintenance And Checkout Facility
• OMD — Operations And Maintenance Documentation
• OMD — Orbiter Mating Device
• OMDR — Operations And Maintenance Data Record
• OMDRI — Operations And Maintainability Data Record
• OME — Orbital Main Engine
• OMET — Orbiter Mission Elapsed Time
• OMEWG — Orbiter Maintenance Engineering Working Group
• OMI — Operations And Maintenance Instruction
• OMIS — Operational Management Information System
• OMISS — Operation And Maintenance Instruction Summary Sheet(s)
• OML — Orbiter Mold Line
• OML — Outer Mold Line
• OML — Outside Mold Line
• OMMH — Orbiter Maintenance Man-Hours
• OMNI — Omnidirectional
• OMNI — Omni-Range
• OMP — Operations And Maintenance Plan
• OMPR — Operational Maintainability Problem Reporting
• OMPT — Observed Mass Point Trajectory
• OMR — Operations And Maintenance Requirements
• OMR — Operations Management Room
• OMR — Orbiter Management Review
• OMRB — Operating Material Review Board
• OMRC — Operational Maintenance Requirements Catalog
• OMRF — Orbiter Modification And Refurbishment Facility
• OMRP — Operations And Maintenance Requirements Plan
• OMRSD — Document
• OMRSD — O&M Requirements And Specifications Documentation
• OMRSD — Operational Maintainability Reporting Systems Document
• OMRSD — Operational Maintenance Requirements And Specification
• OMS — Orbital Maneuvering Subsystem
• OMS — Orbital Maneuvering System
• OMSF — Office Of Manned Space Flight (now OSTS)
• OMSP — Operational Maintenance Support Plan
• OMU — Optical Measuring Unit
• OMV — Oxygen Manual Valve
• ONBD — Onboard
• ONBT — Orbiter Neutral Buoyancy Trainer
• OND — Operator Need Date
• ONR — Office Of Naval Research
• OOD — OrbiterOn-Dock
• OODP — Out-of-Detent Pitch
• OODR — Out-of-Detent Roll
• OOMM — Organizational Operations And Maintenance Manual
• OOP — Out Of Position
• OOS — On-Orbit Station
• OOS — Orbit-to-Orbit Shuttle
• OOS — Orbit-to-Orbit Stage
• OOSDP — On-Orbit Station Distribution Panel
• OOT — Out Of Tolerance
• OP — Open
• OP — Operate