SPILVE.LV • Aviation abbreviations - O

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Charts of Latvia

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Aviation abbreviations

O
O-QAR — Optical quick access recorder O/R — On request OAG — Official Airline Guide OAR — Office of Airspace Regulation OAT — Outside air temperature OAT — Outside air transport OATS — Orbit and attitude tracking OBS — Omni bearing selector OBS — Observe, observed, observation OBSC — Obscure, obscuring, obscured OBST — Obstacle OBSTR — Obstruction OBTEX — Offboard targeting experiments OC — Operating Certificate OCA — Oceanic control area OCA — Obstacle clearing altitude OCC — Occulting OCH — Obstacle clearance height OCNL — Occasional, occasionally OCT — October OCTA — Outside control area OCTR — Outside control zone OEI — One engine inoperative OEM — Original equipment manufacturer OFST — Lateral offset active light OFZ — Obstacle free zone OGE — Operational ground equipment OHD — Overhead OHS — Occupation health and safety	OHSMS — Occupational health and safety management systems OIS — OGE input simulator OIS — Obstacle identification surface OLC — Office of Legal Counsel OLDI — On-line data interchange OLS — Obstacle limitation surface OM — Outer marker OM — Operations Manual OP — Operational OPA — Opaque, white type of ice formation OPC — Office of Parliamentary Counsel OPMET — Operational meteorological OPN — Open, opening, opened OPN — Operational notification message OPR — Operator, operate, operative, operating, operational OPS — Operations OPT — Optimum OSI — Open sytem interconnection OSIP — Overhaul and special inspections periods OT — Other times OTAC — Overseas Territories Aviation Circulars OTAR — Overseas Territories Aviation Requirements OTFP — Operational Ttaffic flow planning OTLK — Outlook OTP — On top OUBD — Outboard OVC — Overcast OW — Over water

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