Welcome to the notices to air missions acronym list. NOTAM was known as notices to airmen. This list includes acronyms, abbreviations, and contractions for all NOTAM's. If we missed one check our master acronym list here or let us know!
L L Left L Locator L Logistics L/MF Low/Medium Frequency LA Low Approach LAA Local Airport Advisory LAADR Low Altitude Arrival/Departure Routing LAAS Local Area Augmentation System LAB Laboratory LABRDR Labrador LABS Leased Service A/B System LABS Low Altitude Bombing System LADP Local Airport Deicing Plan LAM Logical Acknowledgment LAN Inland LARCT Last Radio Contact LAT Latitude LAWRS Limited Aviation Weather Reporting Station LB Left Base LB Pounds LC Local Control LCA Locally LCL Local or locally LCT Locate LCTMP Little Change in Temperature LD Long Distance LDA Landing Distance Available LDA Localizer Type Directional Aid LDG Landing LDI Landing Direction Indicator LDIN Lead in Lighting System LEN Length LETFO Letter Follows LF Low Frequency LFC Laminar Flow Control LFNT Low Frequency Intersection LFR Low Frequency Radio Range LFT Lift LGRNG Long Range LGT Light LGTD Lighted LGWV Long Wave LICOF Land Lines Communications Facilities LIFR Low IFR LIH Light Intensity High LIL Light Intensity Low LIM Light Intensity Medium LIN Linearity LIRL Low Intensity Runway Edge Lights LK Lake LKLY Likely LKTYP Like Type LL Landline LLWAS Low Level Wind Shear Alert System LLWS Low Level Wind Shear LLZ Localizer LM Locator Middle LMM Compass locator at ILS middle marker LMT Limit LMT Local Mean Time LN Line LNAV Lateral Navigation LND Land LNDG Landing LO Liaison Officer LO Outer Locator LOA Letter of Agreement LOC Localizer LOCOR Local Coordinator LODISNAV Long Distance Navigation LOEAT Lowest Temperature Equaled for all Time LOEFM Lowest Temperature Equaled for the Month LOESE Lowest Temperature Equaled so Early LOESL Lowest Temperature Equaled so Late LOM Compass locator at ILS outer marker LONG Longitude LONGL Longitudinal LOP Line of Position LORAC Long Range Accuracy LORAN Long Range Air Navigation System LOTMP Lowest Temperature LOXAT Lowest Temperature Exceeded for all Time LOXFM Lowest Temperature Exceeded for the Month LOXSE Lowest Temperature Exceeded so Early LOXSL Lowest Temperature Exceeded so Late LP Left Traffic Pattern LP Linear Polarization LP Liquid Propane LP Localizer Performance Without Vertical Guidance LPV Localizer Performance With Vertical Guidance LR The last message received by me was LRA Landing Rights Airport LRCOM Long Range VHF/UHF Communications LRG Large LRG Long Range LRS Lake Reporting Service LS Left Side LS Last message sent by me was or last message was LSQ Line Squall LSR Loose Snow on Runway LST Local Standard Time LT Turn left after takeoff LTAV Light and Variable LTD Limited LTF Local Training Flight LTFC Landing Traffic LTGCA Lightning Cloud to Air LTGCC Lightning Cloud to Cloud LTGCCCG Lightning Cloud to Cloud Cloud to Ground LTGCG Lightning Cloud to Ground LTGCW Lightning Cloud to Water LTGIC Lightning in Clouds LTL Little LTLCG Little Change LTNG Lightning LTR Later LTR Letter LTT Landline Teletypewriter LTTR Latter LV Leaving LV Light and Variable LVE Leave or leaving LVG Leaving LVL Level LVLOF Level Off LWR Lower LX Low Index LYR Layer or layered or layers M M In RVR indicates visibility less than lowest reportable sensor value (e.g. M600) M In temperature field means “minus” or below zero M Mach number M Maritime (air mass) M Metres (preceded by figures) M Missing (weather reports only) M Mountain Standard Time (time groups only) MA Map Analysis MAA Maximum Authorized (IFR) Altitude MAC Military Airlift Command MACH MACH Number (speed ratio to speed of sound) MACKAY Mackay Radio and Telegraph Company MACVFR Make Altitude Changes VFR MAFAP Minimum Altitude over Facility on Final Approach Course MAG Magnetic MAGSI Minimum Altitude at Glide Slope Intersection Inbound MAINT Maintenance MAL Maintain at Least (altitude) MALS Medium-Intensity Approach Lighting System MALSF Medium-Intensity Approach Light System with Sequenced Flashers MALSR Medium-Intensity Approach Lighting System With Runway Alignment Indicator MAM Maintenance Assumes Monitor MAN Manitoba MAN Manual MANAM Manual Amendment MANOP Manual of Operations MAP Aeronautical Maps and Charts MAP Missed Approach Point MAPS Meteorological Aeronautical Presentation System MAPT Missed Approach Point MAR At sea MARPT Municipal Airport MARSA Military Assumes Responsibility for Separation of Aircraft MAS Manual A1 Simplex MAS Military Alert System MAX Maximum MB Marker Beacon MB Millibars MCA Minimum Crossing Altitude MCAS Marine Corps Air Station MCAS(H) Marine Corps Air Station (Helicopter) MCK Maintenance Check MCS Master Control Station MCW Modulated Continuous Wave MCZNE Minimum When Control Zone Effective MDA Minimum Descent Altitude MDF Medium Frequency Direction Finding Station MDFR Make Descent From MDFY Modify MDH Minimum Descent Height MDT Moderate MDZ Modernize MDZN Modernization MEA Minimum En Route Altitude MECH Mechanic MED Medical MED Medium MEDEVAC Medical Emergency Evacuation MEGG Merging MEHT Minimum Eye Height Over Threshold MEML Memorial MET Meteorological aviation routine weather report METOF Meteorological Officer METRO Metropolitan MEX Mexico MF Medium Frequency MFL Maintain Flight Level MFOB Minimum Fuel on Board MFPOF Master Flight Plan on File MFS Military Flight Service MFV Forward visibility more than (miles) MFXT Meter Fix Time MGAT Make Good a Track of (degrees) MGMT Make Good a Magnetic Track of (degrees) MGMT Management MGR Manager MHA Minimum Holding Altitude MHDF Medium and High Frequency Direction Finding Station MHDG Magnetic Heading MHFR Military Height Finder Radar MHKVLY Mohawk Valley MHVDF Medium High and Very High Frequency Direction Finding Station MHz Megahertz MI Manufacturing Inspector MI Mile MI Shallow MID Middle MID Midpoint (related to RVR) MID/ASIA Middle East/Asia Region MIDIZ MidCanada Identification Zone MIDN Midnight MIDPT Midpoint MIFG Patches of shallow fog not deeper than two meters MIJI Meaconing Intrusion Jamming Interference MIL Military MIMNO Mimeographic Notice MIN Minute MINIT Minutes in Trail MIREQ Minimum Requirements Specified MIRL Medium Intensity Runway Edge Lights MIS Missing MISC Miscellaneous MISG Missing MISL Missile MIT Miles in Trail MITO Minimum Interval Takeoff MKCT Make Check Turn MKD Marked MKR Marker MKR Marker Radio Beacon MLS Microwave Landing System MLTLVL Melting Level MM Middle Marker MM Millimeter MMACH Maintain Mach MMO Main Meteorological Office MNLD Mainland MNLY Mainly MNM Minimum MNPS Minimum Navigation Performance Specification MNPSA Minimum Navigation Performance Specification Airspace MNT Monitor MNTN Maintain MNVR Maneuver MOA Memorandum of Agreement MOA Military Operations Area MOC Minimum Obstacle Clearance MOCA Minimum Obstruction Clearance Altitude MOD Moderate MOD Modulate or modulation or modulator MOGR Moderate or Greater MON Above mountains MONOK Monitor resumed normal operation MONOS Monitor out of service MONTR Monitor MOPS Minimum Operational Performance Standards MOPTAR Multiobject Phase Tracking and Ranging MOREPS Monitor Station Reports MOT Ministry of Transport (Canada) MOTNE Meteorological Operational Telecommunications Network Europe MOV Move MPH Miles Per Hour MPP Merit Promotion Program MPS Meters Per Second MPVA Maintain a Position VFR and Advise MRA Minimum Reception Altitude MRG Medium Range MRGL Marginal MRM Maintenance Returns Monitor MRNG Morning MRP ATS/MET Reporting Point MRR Mechanical Reliability Report MRTM Maritime MRU Military Radar Unit MS Minus MSA Minimum Safe/sector Altitude MSAW Minimum Safe Altitude Warning MSG Message MSGCTR Message Center MSL Mean Sea Level MSR Message (transmission identification) has been misrouted MSSR Monopulse Secondary Surveillance Radar MSTLY Mostly MSTR Moisture MT Mountain MTCA Minimum Terrain Clearance Altitude MTI Moving Target Indicator MTN Mountain MTR Military Training Route MTRL Material MTRY Momentary MTU Metric Units MTW Mountain Wave MU Friction value representing runway surface conditions MUA Maximum Usable Altitude MUF Maximum Usable Frequency MULT Multiple MUNI Municipal MV Millivolt MVA Minimum Vector Altitude MVDF Medium and very high frequency direction finding station MVFR Maintain VFR MVFR Marginal VFR MVSP Maintain Visual Separation MWO Meteorological Watch Office MWRC Maintain Well to Right of Course MWTCS Modernized Weather Teletypewriter Communications System MXD Mixed N N North or northern latitude N/A Not Applicable NA National Air Traffic Controllers Association NA Not Authorized NAAS Naval Auxiliary Air Station NAATS National Association of Air Traffic Control Specialists NAB Not Above NACOS National Communications Schedule NADIN National Airspace Data Interchange Network NAF Naval Air Facility NAFEC National Aviation Facilities Experimental Center NANAC National Aircraft Noise Abatement Council NAP Not at Present NAPRS National Airspace Performance Reporting System NAR North American Route NAR Not According to Routine NAS National Airspace System NAS Naval Air Station NAS Navigation and Collision Avoidance System NASA National Aeronautics and Space Administration NASC National AIS System Centre NASEO National Airways System Engineering Office NASP National Airport System Plan NAT North Atlantic NAT Not ARTS tracked NATL National NATR No Additional Traffic Reported NATS Noise Abatement Test System NAV Navigation NAVAID Navigational Aid NAVLO Navy Liaison Officer NAVREP Navy Representative NB New Brunswick NB Northbound NBCAP National Beacon Code Allocation Plan NBFR Not Before NBND Northbound NBRHD Neighborhood NC National Air Transport Coordinating Committee NC No Change NCDC National Climatic Data Center NCE No Change in Estimates NCS National Communications System NCWX No Change in Weather NDB Nondirectional Radio Beacon NDB/DME NDB and DME (collocated) NDBLO Not to Descend Below NE Northeast NEB Northeastbound NEC Necessary NEF No Further Clearance Required NEG Negative NELY Northeasterly NERN Northeastern NESS National Environmental Satellite Service NETR No Essential Traffic Reported NEW ENG New England NFDC National Flight Data Center NFDD National Flight Data Digest NFLD Newfoundland NFQ Night Frequency NFT No Filing Time NFU Not For Us NG National Guard NGT Night NHD Not Heard NICS National Airspace System Interfacility Communications System NIL None NIL Unable to transmit NIS Not in System NL No Layers NLT Not Later Than NM Nautical Mile NMBR Number NMC National Meteorological Center NML Normal NMN No Middle Name NMR Nautical Mile Radius NMRS Numerous NNE North North East NNERN North North Eastern NNEWD North North Eastward NNW North North west NNWRN North North Western NNWWD North Westward NO Not available NOAA National Oceanic and Atmospheric Administration NOAC No Action Necessary NOF NOTAM Office NOFIN No Further Information NOHOL Not Holding NOIFN No Information NOM National Communications Center NOMAD Naval Oceanographic Meteorological Automatic Device NONEG Negative replies not required NONRVSM Non-RVSM Capable Flight NOPAC North Pacific NOPAR Do not pass to Air Defense radar NOPT No Procedure Turn Required NORAC No Radio Contact NORAD North American Aerospace Defense Command NORDO No Radio NOREC No Record NOREP No Report NORIV No Arrival Report NORPI No pilot balloon observation will be filed next collection unless weather changes significantly NORR No Reply Received NORST No Restrictions NOS National Ocean Service NOSI now Simultaneous NOSIG No Significant Change NOSPL No Special Observations Taken (weather reports only) NOSUM NOTAM Summary NOTAM Notice to Air Missions NOTAM Notice to Airmen (No longer used) NOZ Normal operating zone NPI Nonprecision Instrument NPRL No Parallel Traffic NPRM Notice of Proposed Rulemaking NPRS Nonpersistent NR Near NR Number NRAB Naval Reserve Air Base NRD No Record of Destination NRH No Reply Heard NRP North American Route Program NRV Nonrevenue NRW Narrow NS Nimbostratus NS Nova Scotia NSC No Significant Clouds NSC Nonstandard C/A Code NSCSWD No Small Craft or Storm Warning are Being Displayed NSP Nonstandard Holding Pattern NSSFC National Severe Storm Forecast Center NSTP Nonstop NSW No Significant Weather NTAP National Track Analysis Program NTAP Notices To Airmen Publication NTE Not to Exceed NTFND No Trouble Found NTFY Notify NTL National NTO Name to NTRP No Traffic Reported NTSB National Transportation Safety Board NTZ No Transgression Zone NUDET Nuclear Detonation NVA Negative Vorticity Advection NW Northwest NWB Northwestbound NWLY Northwesterly NWRN Northwestern NWS National Weather Service NWSO Naval Weather Service Office NXT Next O O/F On File O/R On Request O/T Overtime OA Overhead Approach OAC Oceanic Area Control OAG Official Airline Guide OANDR Operation and Regulation OAOI On and Off Instruments OARTS Oceanic Air Route Tracking System OAS Obstacle Assessment Surface OAT Outside Air Temperature OB On Board OBL Obliterate OBND Outbound OBS Observation OBSC Obscure obscured or obscuring OBST Obstacle OBST Obstruct OBSTN Obstruction OC Obstruction Chart OC On Course OCA Obstacle Clearance Altitude OCA Oceanic Control Area OCAC Oceanic OCAS Out of Controlled Airspace OCFNT Occluded Front OCH Obstacle Clearance Height OCL Obstacle Clearance Limit OCLD Occlude OCLN Occlusion OCNL Occasional OCR Occur OCS Obstacle clearance surface OCTLA Out of Control Area ODALS Omnidirectional Approach Lighting System ODAPS Oceanic Display and Planning System OFAS Overseas Flight Assistance Service OFC Office OFFL Official OFM Out For Maintenance OFP Occluded Frontal Passage OFP Original Flight Plan OFSHR Offshore OFW Off Watch OFXT Outer Fix Time OFZ Obstacle free zone OG On Ground OGN Originate OHD Overhead OI On Instruments OINT Omni Intersection OIS Operational Information System OJT On The Job Training OK Operating Normally OK We agree or it is correct OLDI On Line Data Interchange OLS Optical Landing System OM Outer Marker OMSG Our Message OMTNS Over Mountains ONER Oceanic Navigational Error Report ONSHR On Shore ONT Ontario ONW On Watch OOT Out of Tolerance OPA Opaque white type of ice formation OPC Operational Control OPDT Opposite Direction Traffic OPER Operate OPMET Operational Meteorological (information) OPN Open OPN Operation OPNML Operations Normal OPR Operate Operator Operational OPS Operations OPSNET Operations Network ORD Order ORGPHC Orographic ORIG Original ORL Overrun Lights ORS Over Range Station OSV Ocean Station Vessel OT Oral Notice OT On Time OTAS On Top and Smooth OTFC Overflight Traffic OTLK Outlook OTP On Top OTR Other OTRW Otherwise OTS Organized Track System OTS Out of Service OUBD Outbound OV Location (PIREP only) OVC Overcast OVD Overdue OVHD Overhead OVLA Overlay OVNGT Overnight OVR Over OVRN Overrun OVSEA Overseas OVTK Overtake OW One Way OWF Optimum Working Frequency OXY Oxygen P P In RVR indicates visibility greater than highest reportable sensor value P Pacific Standard Time P Polar (air mass) P Precision approach terrain chart P Prohibited Area P/CG Pilot Controller Glossary P6SM Visibility greater than 6 SM (TAF only) PA Precision Approach PA Pressure Altitude PAC Pacific PACF Parent FSS assumes control of part time FSS PADRA Pass to Air Defense Radar PAEW Personnel and Equipment Working PAJA Parachute Jumping Activities PALS Precision Approach Lighting System PALT Present Altitude PANS Procedures for Air Navigation Services PAP ProAirPilot PAPI Precision Approach Path Indicator PAR Precision Approach Radar PARA Paragraph PAREN Parenthesis PARL Parallel PARROT Position Adjustable Range Reference Orientation Transponder PAT Pattern PATWAS Pilots Automatic Telephone Weather Answering Service PAU Present Address Unknown PAX Passenger PBCT Proposed Boundary Crossing Time PBL Probable PBS Public Buildings Service PCA Positive Control Area PCD Proceed PCK Pilot Check PCL Pilot Controlled Lighting PCN Pavement Classification Number PCPN Precipitation PCS Permanent Change of Station PD Period PDAR Preferential Arrival/Departure Route PDC Predeparture Clearance PDDC Proceed Directly on Course PDMT Predominant PDMT Predominate PDOP Position Dilution of Precision PDR Preferential Departure Route (Stage A) PDW Priority Delayed Weather PEN Peninsula PENT Penetrate or penetration PER Performance PERCOM Peripheral Communications PERF Perforator PERM Permanent PFSV Pilot to Forecaster Service PGTSND Puget Sound PHYS Physical PIB Preflight Information Bulletin PIBAL Pilot Balloon Observation PIC Pilot in Command PIR Precision Instrument Runway PIREP Pilot Weather Report PIRFC Pilot Requests Forecast PISE No pilot balloon observation due to unfavorable sea conditions PISO No pilot balloon observation due to snow PIT Pilot Instructor Training PIWI No pilot balloon observation due to high, or gusty, surface wind PJE Parachute Jumping Exercise PK WND Peak Wind PL Ice Pellets PLA Practice Low Approach PLASI Pulsating Visual Approach Slope Indicators PLAT Present Latitude PLF Private Line Telephone PLN Flight Plan PLOB Place of Birth PLONG Present Longitude PLS Please PLT Private Line Teletypewriter PLVL Present Level PLW Plow (snow) PM Post Meridiem PMSN Permission PMT Permit PN Prior Notice Required PNHDL Panhandle PNR Point of No Return PO Dust Devils PO Post Office PO Purchase Order POA Privately Owned Aircraft POB Persons On Board POC Proceed or Proceeding On Course POS Positive POSS Possible POV Privately Owned Vehicle PP Pay Period (number) PPI Plan Position Indicator PPINA Radar weather report not available (or omitted for a reason different than those otherwise stated) PPINE Radar weather report no echoes observed PPINO Radar weather report equipment inoperative due to breakdown PPIOK Radar weather report equipment operation resumed PPIOM Radar weather report equipment inoperative due to maintenance PPR Prior Permission Required PPS Propose PPSN Present Position PR Partial PR Photo Reconnaissance PRBL Probable PRBLTY Probability PRBO Position Relief Briefing Observed PRCF Parent FSS returns control of part time FSS PRCHT Parachute PRCTN Precaution PRECD Precede PREF Preferred PRES Pressure PRESFR Pressure Falling Rapidly PRESRR Pressure Rising Rapidly PREV Previous PRFG Fog Partial PRI Primary PRIM Primary PRIN Principal PRIND Present Indications Are PRIRA Primary Radar PRJMP Pressure Jump (weather reports only) PRKG Parking PRN Pseudo Random Noise PROB Probability PROB30 Probability 30 Percent PROB40 Probability 40 Percent PROC Procedure PROCD Proceed PROG Prognosis or prognostic PROG Progress PROP Propeller PROPA Propagation PROSIG Procedure Signal PROV Provisional PRP Prepare PRSNT Present PRST Persist PRVD Provide PS Passenger Service PS Plus PSBL Possible PSBT Pilot Self Briefing Terminal PSG Passage PSG Passing PSGR Passenger PSN Position PSNAL Personal PSNL Personnel PSNRP Position Report PSP Pierced Steel Planking PSR Packed Snow on Runway PSR Primary Surveillance radar PSRI Position Subject to Return of Incumbent PSRS Position Subject to Rotating Shifts PST Pacific Standard Time PT Procedure Turn PTC Plan to Clear PTC Positive Target Control PTCHY Pitchy PTCP Participate PTLY Partly PTN Portion PTN Procedure Turn PTP Point To Point PTR Printer PTS Polar Track Structure PUB Public PUBL Publish PUP Pickup PVA Positive Vorticity Advection PVASI Pulsating Visual Approach Slope Indicator PVL Prevail PVLT Prevalent PVT Private PWB Pilot Weather Briefing PWI Proximity Warning Indicator PWINO Precipitation identifier information not available (weather reports only) PWR Power PWRNO Power Failure PWROK Power Restored PY Spray Q QDL Question asking for a series of bearings typically used in ICAO QDM Magnetic Heading QDR Magnetic Bearing QFE Atmospheric pressure at airport elevation QFLOW Quota Flow Control Procedures QFU Magnetic orientation of runway QJH Shall I run my test tape/a test sentence QLFY Qualify QLTY Quality QN Question QNH Altimeter subscale setting to obtain elevation when on the ground QNTY Quantity QSP Question asking for free of charge relay in ICAO QSTNRY Quasi Stationary QTA Shall I cancel telegram number? QTE True bearing QTR Quarter QUAD Quadrant QUE Quebec QUJ Questions asking for TRUE track in degrees and time in ICAO
