| ABBRV |
DESCRIPTION |
| OAG |
OfficialAirlineGuide |
| OALT |
OperationalAcceptableLevelofTraffic |
| OAW |
Off-airwayWeatherStation |
| ODAL |
OmnidirectionalApproachLightingSystem |
| ODAPS |
OceanicDisplayandProcessingStation |
| OEI |
OneEngineInoperative |
| OEP |
OperationalEvolutionPlan/Partnership |
| OFA |
ObjectFreeArea |
| OFDPS |
OffshoreFlightDataProcessingSystem |
| OFT |
OuterFixTime |
| OFZ |
ObstacleFreeZone |
| OM |
OuterMarker |
| OMB |
OfficeofManagementandBudget |
| ONER |
OceanicNavigationalErrorReport |
| OPLT |
OperationalAcceptableLevelofTraffic |
| OPSW |
OperationalSwitch |
| OPX |
OffPremisesExchange |
| ORD |
OperationalReadinessDemonstration |
| OTR |
OceanicTransitionRoute |
| OTS |
OrganizedTrackSystem |
