Notices to Airmen Contractions NOTAM CONTRACTIONS This list contains most of the commonly used contractions currently in use in Notices to Airmen (NOTAMS) and the standard aviation weather products, such as METAR/TAF, area forecasts, SIGMETs, AIRMETs, etc. Contraction Decode Contraction Decode A BRG Bearing ABN Airport Beacon BYD Beyond ABV Above ACC Area Control Center (ARTCC) C ACCUM Accumulate CAAS Class A Airspace ACFT Aircraft CAT Category ACR Air Carrier CBAS Class B Airspace ACT Active CBSA Class B Surface Area ADJ Adjacent CCAS Class C Airspace ADZD Advised CCLKWS Counterclockwise AFD Airport Facility Directory CCSA Class C Surface Area AGL Above ground level CD Clearance Delivery ALS Approach Light System CDAS Class D Airspace ALT Altitude CDSA Class D Surface Area ALTM Altimeter CEAS Class E Airspace ALTN Alternate CESA Class E Surface Area ALTNLY Alternately CFR Code of Federal Regulations ALSTG Altimeter Setting CGAS Class G Airspace AMDT Amendment CHG Change AMGR Airport Manager CIG Ceiling AMOS Automatic Meteorological Observing System CK Check AP Airport CL Centerline APCH Approach CLKWS Clockwise AP LGT Airport Lights CLR Clearance, clear(s), cleared to APP Approach control CLSD Closed ARFF Aircraft Rescue & Fire Fighting CMB Climb ARR Arrive, arrival CMSND Commissioned ASOS Automated Surface Observing System CNL Cancel ASPH Asphalt COM Communications ATC Air Traffic Control CONC Concrete ATCSCC Air Traffic Control System Command Center CPD Coupled ATIS Automatic Terminal Information Service CRS Course AUTH Authority CTC Contact AUTOB Automatic Weather Reporting System CTL Control AVBL Available AWOS Automatic Weather Observing/Reporting System D AWY Airway DALGT Daylight AZM Azimuth DCMSND Decommissioned DCT Direct B DEGS Degrees BA FAIR Braking action fair DEP Depart/Departure BA NIL Braking action nil DEPPROC Departure procedures BA POOR Braking action poor DH Decision Height BC Back Course DISABLD Disabled BCN Beacon DIST Distance BERM Snowbank(s) Containing Earth/Gravel DLA Delay or delayed BLW Below DLT Delete BND Bound DLY Daily 1 Contractions Notices to Airmen Contraction Decode Contraction Decode DME Distance Measuring Equipment HR Hour DMSTN Demonstration DP Dew Point Temperature I DRFT Snowbank(s) Caused By Wind Action IAF Initial approach fix DSPLCD Displaced IAP Instrument Approach Procedure INBD Inbound E ID Identification E East IDENT Identify/Identifier/Identification EB Eastbound IF Intermediate fix EFAS En Route Flight Advisory Service ILS Instrument Landing System ELEV Elevation IM Inner Marker ENG Engine IMC Instrument Meteorological Conditions ENRT En route IN Inch/Inches ENTR Entire INDEFLY Indefinitely EXC Except INFO Information INOP Inoperative F INSTR Instrument FAC Facility or facilities INT Intersection FAF Final Approach fix INTL International FAN MKR Fan Marker INTST Intensity FDC Flight Data Center IR Ice On Runway(s) FI/T Flight inspection temporary FI/P Flight inspection permanent K FM From KT Knots FREQ Frequency FNA Final approach L FPM Feet per minute L Left FREQ Frequency LAA Local Airport Advisory FRH Fly Runway Heading LAT Latitude FRI Friday LAWRS Limited Aviation Weather Reporting Station FRZN Frozen LB Pound/Pounds FSS Automated/Flight Service Station LC Local Control FT Foot, feet LOC Local/Locally/Location LCTD Located G LDA Localizer Type Directional Aid GC Ground Control LGT Light or lighting GCA Ground Control Approach LGTD Lighted GOVT Government LIRL Low Intensity Runway Lights GP Glide Path LLWAS Low Level Wind Shear Alert System GPS Global Positioning System LM Compass Locator at ILS Middle Marker GRVL Gravel LDG Landing LLZ Localizer H LO Compass Locator at ILS Outer Marker HAA Height Above Airport LONG Longitude HAT Height Above Touchdown LRN Loran HDG Heading LSR Loose Snow on Runway(s) HEL Helicopter LT Left Turn HELI Heliport HIRL High Intensity Runway Lights M HIWAS Hazardous Inflight Weather Advisory Service MAG Magnetic HLDG Holding MAINT Maintain, maintenance HOL Holiday MALS Medium Intensity Approach Light System HP Holding Pattern 2 Notices to Airmen Contractions Contraction Decode Contraction Decode Medium Intensity Approach Light System with P MALSF Sequenced Flashers PAEW Personnel and Equipment Working Medium Intensity Approach Light System with MALSR PAPI Precision Approach Path Indicator Runway Alignment Indicator Lights PAR Precision Approach Radar MAPT Missed Approach Point PARL Parallel MCA Minimum Crossing Altitude PAT Pattern MDA Minimum Descent Altitude PAX Passenger MEA Minimum Enroute Altitude PCL Pilot Controlled Lighting MED Medium PERM Permanent/Permanently MIN Minute PJE Parachute jumping exercise MIRL Medium Intensity Runway Lights PLA Practice Low Approach MLS Microwave Landing System PLW Plow/Plowed MM Middle Marker PN Prior Notice Required MNM Minimum PPR Prior Permission Required MNT Monitor/Monitoring/Monitored PREV Previous MOC Minimum Obstruction Clearance PRN Psuedo random noise MON Monday PROC Procedure MRA Minimum reception altitude PROP Propeller MSA Minimum Safe Altitude/Minimum Sector Altitude PSR Packed Snow on Runway(s) MSAW Minimum Safe Altitude Warning PTCHY Patchy MSG Message PTN Procedure Turn MSL Mean Sea Level PVT Private MU MU meters MUD Mud R MUNI Municipal RAIL Runway Alignment Indicator Lights Remote Automatic Meteorological Observing RAMOS N System N North RCAG Remote Communication Air/Ground Facility NA Not Authorized RCL Runway Centerline NAV Navigation RCLL Runway Centerline Light System NB Northbound RCO Remote Communication Outlet NDB Nondirectional Radio Beacon REC Receive/Receiver NE Northeast RELCTD Relocated NGT Night REIL Runway End Identifier Lights NM Nautical Mile(s) REP Report NMR Nautical Mile Radius RLLS Runway Lead'in Lights System NONSTD Nonstandard RMNDR Remainder NOPT No Procedure Turn Required RNAV Area Navigation NR Number RPLC Replace NTAP Notice To Airmen Publication RQRD Required NW Northwest RRL Runway Remaining Lights RSR En Route Surveillance Radar O RSVN Reservation OBSC Obscured RT Right Turn OBST Obstruction RTE Route OM Outer Marker RTR Remote Transmitter/Receiver OPR Operate RTS Return to Service OPS Operation RUF Rough ORIG Original RVR Runway Visual Range OTS Out of Service RVRM Runway Visual Range Midpoint OVR Over RVRR Runway Visual Range Rollout RVRT Runway Visual Range Touchdown 3 Contractions Notices to Airmen Contraction Decode Contraction Decode RWY Runway TIL Until S TKOF Takeoff S South TM Traffic Management SA Sand, sanded TMPA Traffic Management Program Alert SAT Saturday TRML Terminal SAWR Supplementary Aviation Weather Reporting Station TRNG Training SB Southbound TRSN Transition SDF Simplified Directional Facility TSNT Transient SE Southeast TUE Tuesday SFL Sequence Flashing Lights TWR Tower SID Standard Instrument Departure TWY Taxiway SIMUL Simultaneous SIR Packed or Compacted Snow and Ice on Runway(s) U SKED Scheduled UFN Until further notice SLR Slush on Runway(s) UNAVBL Unavailable SN Snow UNLGTD Unlighted SNBNK Snowbank(s) Caused by Plowing UNMKD Unmarked SNGL Single UNMNT Unmonitored SPD Speed UNREL Unreliable Simplified Short Approach Lighting System with UNUSBL Unusable SSALF Sequenced Flashers Simplified Short Approach Lighting System with V SSALR Runway Alignment Indicator Lights VASI Visual Approach Slope Indicator SSALS Simplified Short Approach Lighting System VDP Visual Descent Point SSR Secondary Surveillance Radar VGSI Visual Glide Slope Indicator STA Straight'in Approach VIA By Way Of STAR Standard Terminal Arrival VICE Instead/Versus SUN Sunday VIS Visibility SVC Service VMC Visual Meteorological Conditions SW Southwest VOL Volume SWEPT Swept or Broom/Broomed VOR VHF Omni'Directional Radio Range VORTAC VOR and TACAN (colocated) T W T Temperature W West TAA Terminal Arrival Area WB Westbound TACAN Tactical Air Navigational Aid WED Wednesday TAR Terminal area surveillance radar WEF With effect from or effective from TDZ Touchdown Zone WI Within TDZ LG Touchdown zone lights WIE With immediate effect or effective immediately TEMPO Temporary WKDAYS Monday through Friday TFC Traffic WKEND Saturday and Sunday TFR Temporary Flight Restriction WND Wind TGL Touch and Go Landings WPT Waypoint THN Thin WSR Wet Snow on Runway(s) THR Threshold WTR Water on Runway(s) THRU Through WX Weather THU Thursday 4 Notices to Airmen Contractions WEATHER CONTRACTIONS Contraction Decode Contraction Decode A BECMG Becoming (expected between 2 digit beginning A Absolute (temperature) hour and 2 digit ending hour) (TAF) A Alaskan Standard Time (time groups only) BFDK Before Dark A Arctic (air mass) BINOVC Breaks in Overcast A01 Automated Observation without Precipitation BKN Broken Discriminator (rain/snow) (METAR) BL Between Layers A02 Automated Observation with Precipitation BL Blowing (METAR) Discriminator (rain/snow) (METAR) BLD Build AAWF Auxiliary Aviation Weather Facility BLDUP Buildup AC Altocumulus BLKHLS Black Hills ACC Altocumulus Castellanus BLKT Blanket ACSL Standing Lenticular Altocumulus BLZD Blizzard ACYC Anticyclonic BMS Basic Meteorological Services ADRNDCK Adirondack BNDRY Boundary ADV Advise BOVC Base of Overcast ADVCTN Advection BR Mist (METAR) ADVY Advisory BRF Brief AFC Area Forecast Center BRKHIC Breaks in Higher Overcast AFDK After Dark BRKSHR Berkshire ALF Aloft BRM Barometer ALGHNY Allegheny BTWN Between ALQDS All Quadrants ALSEC All Sectors C ALTA Alberta C Central Standard Time (time groups only) ALUTN Aleutian C Continental (air mass) ALWF Actual Wind Factor CAN Canada AM Ante Meridiem CARIB Caribbean AMD Amended Forecast (TAF) CASCDS