## O 

OAT—Outside Air Temperature OBS—Omni Bearing Selector OCS—Obstacle Clearance Surface ODP—Obstacle Departure Procedure OpSpecs—Operations Specifications OROCA—Off-Route Obstruction Clearance Altitude OSV—Operational Service Volume 

## P 

PA—Precision Approach PAR—Precision Approach Radar PCG—Positive Course Guidance PDC—Pre-Departure Clearance PDR—Preferential Departure Route PF—Pilot Flying PFD—Primary Flight Display PI—Principal Inspector PIC—Pilot In Command PIREP—Pilot Weather Report PKI—Public/Private Key Technology PM—Pilot Monitoring POH—Pilot’s Operating Handbook POI—Principle Operations Inspector PRM—Precision Runway Monitor P-RNAV—European Precision RNAV PT—Procedure Turn PTP—Point-To-Point 

## Q 

QFE—Transition Height QNE—Transition Level QNH—Transition Altitude 

## R 

RA—Resolution Advisory; Radio Altitude RAIM—Receiver Autonomous Integrity Monitoring RAL—Research Applications Laboratory RCO—Remote Communications Outlet RJ—Regional Jet RNAV—Area Navigation RNP—Required Navigation Performance RNP AR—Required Navigation Performance Authorization Required ROC—Required Obstacle Clearance RSP—Runway Safety Program RVR—Runway Visual Range RVSM—Reduced Vertical Separation Minimums RVV—Runway Visibility Value RWY—Runway RWY WP—Runway Waypoint 

