operational meteorological information ICAO OPN open ICAO OPN operation GEN

operational meteorological (information) ICAO OPN open ICAO OPN operation GEN OPNML operations normal GEN OPR operate, operator, operational ICAO OPS operations ICAO OPSNET operations network ATC ORD order, indication of ICAO ORGPHC orographic NWS ORIG original GEN ORL overrun lights GEN ORS over range station ATC OSV ocean station vessel NWS OT on time ATC OTAS on top and smooth NWS OTFC overflight traffic GEN OTLK outlook NWS OTP on top ATC OTR other GEN OTRW otherwise GEN OTS organized track system GEN OTS out of service GEN OUBD outbound ICAO OV location (PIREP only) ATC OVC overcast NWS OVD overdue GEN OVHD overhead GEN OVLA overlay GEN OVNGT overnight GEN OVR over GEN OVRN overrun GEN OVSEA overseas GEN OVTK overtake GEN OW one way GEN OWF optimum working frequency GEN OXY oxygen GEN 3/15/07 7110.65R CHG 2 JO 7340.2B CHG 2 6/30/11

JO 7340.2B 11/18/10 2-1-21 Decode P Contraction Definition Usage P in RVR indicates visibility greater than highest reportable sensor value (e.g. P600FT) METAR P Pacific Standard Time (time group only) NWS P polar (air mass) NWS P prohibited area ICAO P/CG pilot controller glossary GEN P6SM visibility greater than 6 SM (TAF only) METAR PA precision approach GEN PA pressure altitude GEN PAC Pacific NWS PACF parent FSS assumes control of part-time FSS GEN PADRA pass to air defense radar ATC PAEW personnel and equipment working GEN PAJA parachute jumping activities GEN PALS precision approach lighting system ICAO PALT present altitude ATC PANS procedures for air navigation services ICAO PAPI precision approach path indicator GEN PAR precision approach radar GEN PARA paragraph GEN PAREN parenthesis GEN PARL parallel ICAO PARROT Transponder GEN PARROT Position adjustable range reference orientation transponder ATC PAT pattern GEN PATC Precision approach terrain chart ICAO PATWAS pilots automatic telephone weather answering service GEN PAU present address unknown GEN PAX passenger ICAO PBCT proposed boundary crossing time GEN PBL probable NWS PBS public buildings service GEN PCA positive control area GEN PCD proceed ICAO PCK pilot check ATC PCL pilot controlled lighting GEN PCL Pilot controlled lighting ICAO PCN pavement classification number ICAO PCPN precipitation NWS PCS permanent change of station GEN PD period GEN PDAR preferential arrival/departure route (Stage A) GEN PDC Pre-departure clearance ICAO PDDC proceed directly on course ATC PDMT predominant NWS PDMT predominate NWS PDOP Position Dilution of Precision ATC PDR preferential departure route (Stage A) GEN PDW priority delayed weather NWS PEN peninsula NWS PENT penetrate or penetration ATC PER performance ICAO PERCOM peripheral communications GEN PERF perforator GEN PERM permanent GEN PFSV pilot to forecaster service GEN PGTSND Puget Sound NWS Contraction Definition Usage PHYS physical GEN PIB Pre-flight information bulletin ICAO PIBAL pilot balloon observation NWS PIC pilot in command GEN PIR precision instrument runway GEN PIREP pilot weather report GEN PIRFC pilot requests forecast GEN PISE