Aircraft Abbreviations and Acronyms
- OBRMOn Board Replaceable Modale
- OBSomnibearing selector
- OBSCObsxure
- OBSCObscured
- OBSCDObscured
- OBSCGObscuring
- OBSNObservatiqn
- OBSTObstacle
- OBSTObshruction
- OBSTLObstruction Lights
- OBTEXOffboard Targeting Experiments
- OBWBSOnboard Weight Balance System
- OBXObnoxious Cargo
- OCOcclusion
- OCOperating Certificate
- OCAOffensive Counter-Air
- OCAOceanic Control Area
- OCASObstacle Collision Avoidance Systems
- OCASObstacle Collision Avoidance Systea
- OCCObstacle Clearance Circle
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