contraction word/meaning useage+FC tornado/water spout METARA absolute (temperature) NWSA Alaskan Standard Time (time groups only) NWSA amber GENA arctic (air mass) NWSAAC Aeronautical Center, FAA GENAAC Alaskan Air Command GENAAD Assigned altitude deviation ICAOAAF Army Air Field GENAAL above aerodrome level ICAOAAL Alaskan Region- FAA GENAATM at all times GENAAWF Auxiliary Aviation Weather Facility NWSAAWTA advise at what time able ICAOABBR abbreviate GENABCST automatic broadcast GENABD aboard GENABI Advance boundary information ICAOABM abeam GENABN aerodrome beacon ICAOABND abandon GENABNDT abundant GENABNML abnormal GENABT about GENABV above GENAC Advisory Circular GENAC altocumulus NWSAC assistant chief GENACARS Aircraft communication addressing & reporting system ICAOACAS airborne collision avoidance system ICAOACCAS altocumulus castellanus NWSACCT account GENACCUM accumulate GENACDNT accident GENACDO Air Carrier District Office GENACE Central Region- FAA GENACES access GENACFT aircraft GENACK acknowledge GENACLD above clouds GENACLS automatic carrier landing system GENACLT accelerate GENACN aircraft classification number ICAOACN all concerned notified GENACNOT accident notice GENACP acceptance (message type designator) ICAOACP area command post GENACPT accept GEN

AWC Contractions Sorted by Contraction

ACPY accompany GENACR air carrier GENACRS across GENACSL standing lenticular altocumulus NWSACT active or activated or activity ICAOACT Technical Center- FAA GENACTG acting GENACTV active GENACTVT activate GENACW aircraft control and warning GENACYC anticyclonic NWSAD aerodrome ICAOADAP Airport Development Aid Program GENADC Aerodrome chart ICAOADCF Air Defense Control Facility GENADCON advise or issue instructions to all concerned GENADCUS advise customs GENADDN addition GENADE Air Defense Emergency GENADF automatic direction finder GENADIZ air defense identification zone GENADJ adjacent GENADLO Air Defense Liaision Officer GENADMAP advise by air mail as soon as possible GENADMIN administration GENADMIR administrator GENADMIV administrative GENADO Aerodrome office (specify service) ICAOADO Airport District Office GENADP automatic data processing GENADPE automatic data processing equipment GENADPS automatic data processing systems GENADQT adequate GENADRNDCK adirondack NWSADS address GENADS Air Defense Sector GENADS automatic dependent surveillance ICAOADSPN advise disposition GENADSU automatic dependent surveillance unit ICAOADV advise NWSADVALT allotment advice GENADVC advice GENADVCTN advection NWSADVN advance GENADVY advisory NWSADW air defense warning GENADZ advise GENADZOF advise this office GENADZY advisory GENAEA Eastern Region- FAA GENAEM aircraft and engine mechanic GEN

AENG airways engineer GENAER approach end runway GENAERO aeronautical GENAES aircraft earth station ICAOAEU Europe- Africa- and Middle East Office- FAA GENAEW airborne early warning GENAFB Air Force Base GENAFC area forecast center NWSAFCT affect GENAFD Airport/Facility Directory GENAFDK after dark NWSAFIL filed flight plan in the air GENAFIRM affirmative GENAFIS aerodrome flight information service ICAOAFM affirmative ICAOAFNEA Air Force NOTAM Exchange Area GENAFNEO Air Force NOTAM Exchange Office GENAFREP Air Force Representative to the FAA GENAFRT air freight GENAFS aeronautical fixed service GENAFS airways facilities sector GENAFSFO airways facilities sector field office GENAFSFOU airways facilities sector field office plus unit GENAFSO airways facilities sector office GENAFSS Automated Flight Service Station GENAFT after GENAFTN Aeronautical Fixed Telecommunications Network GENAFTN afternoon GENAGA aerodromes- air routes and ground aids ICAOAGACS automatic ground air/ground communication system GENA-GEAR arresting gear GENAGL above ground level GENAGL Great Lakes Region- FAA GENAGN again GENAGR agree GENAGRMT agreement GENAHD ahead GENAIATSC all international air traffic switching centers GENAIC Aeronautical Information Circular GENAID airport information desk GENAIDC Air traffic services inter-facility data communication ICAOAILS automatic instrument landing system GENAIM Aeronautical Information Manual GENAIP aeronautical information publications (In General) GENAIRAC aeronautical information regulation and control GENAIRCOMNET Air Force Communications Network GENAIREP air report GENAIRMET Airmen's Meteorological Information GENAIROPNET air operations network GENAIS aeronautical information service GENAIS aeronautical information specialist GEN

AIS airport in sight GENAL all (when used as prefix) GENAL annual leave GENALA alighting area GENALACFO all air carrier field offices GENALADLO all air defense liaison officers in region GENALAFFO all airway facilities sector and field offices GENALANO all accident notice offices GENALARTC all air route traffic control centers in region GENALAT all air traffic service personnel in region GENALATAS all air traffic (area) supervisors in region GENALATF all air traffic field facilities GENALATFO all air traffic field offices GEN

ALCKTall offices having send-receive teletypewriter service on circuit GEN

ALCS/C all AT combined station/centers in region GENALCS/T all AT combined station/towers in region GENALCT attempt to locate GENALDA Air Line Dispatchers Association GENALF aloft NWSALFAA all FAA field offices and personnel GENALFAB all FAA offices on Service B GENALFSFO all flight standards field offices GENALFSS all flight service stations in region GENALG along GENALGHNY Allegheny NWS

ALIATSCall international aeronautical telecommunication switching centers GEN

ALIFO all international field offices GENALIFSS all international flight service stations in region GENALNMT alignment GENALNOT alert notice GENALP airport layout plan GENALPA Air Line Pilots Association GENALQDS all quadrants NWSALR alerting ICAOALRAFAC all radar ATC facilities in region GENALRGN all regional offices GENALS approach light system GENALSEC all sectors NWS

ALSF-1standard 2400' high-intensity approach lighting system with sequenced flashers (Category I configuration) GEN

ALSF-2standard 2400' high-intensity approach lighting system with sequenced flashers (Category II configuration) GEN

ALSTG altimeter setting GENALT altitude GENALTA Alberta NWSALTM altimeter GENALTN alternate GENALTN alternate (aerodrome) ICAOALTPT alternate airport GEN

ALTRV altitude reservation GENALTWR all ATC towers in region GENALUTN Aleutian NWSALWF actual wind factor NWSAM ante meridiem NWSAMA area minimum altitude ICAOAMB ambiguity GENAMD amend / amended forecast GEN/AMDT amendment GENAMECH account mechanical GENAMGR airport manager GENAMIS aircraft movement information services GENAMOS Automatic Meteorological Observing System GENAMP amplifier or amplify GENAMPLTD amplitude NWSAMS aeronautical mobile service GENAMS air mass NWSAMS American Meteorological Society NWSAMSL above mean sea level GENAMSS aeronautical mobile satellite service ICAOAMT amount GENANC Aeronautical chart 1:500 000 (followed by name/title) ICAOANCPT anticipate GEN

ANCSAeronautical navigation chart small scale (followed by name/title scale) ICAO

ANE New England Region- FAA GENANF air navigation facility GENANG Air National Guard GENANLYS analysis NWSANM Northwest Mountain Region- FAA GENANMS Automatic Network Management System GENANNC announce GENANRA air navigation radio aids GENANS answer GENANT antenna GEN

AO1ASOS automated observation without recipitation discriminator (rain/snow) METAR

AO2ASOS automated observation with precipitation discriminator (rain/snow) NWS

AOA at or above GENAOB at or below GENAOC aerodrome obstacle chart (followed by type & name/title) ICAOAOC airport operating certificate GENAOCP aircraft out of commission for parts GENAOE airport of entry GENAOPA Aircraft Owners and Pilots Association GENAP airport ICAOAPAP approach path alignment panel GENAPAPI Abbreviated precision approach path indicator ICAOAPCH approach GENAPDC Aircraft parking/docking chart (followed by name/title) ICAO

APL airport lights GENAPLCN Appalachian NWSAPN Apron ICAOAPNT appoint GENAPP approach control or approach control office ICAOAPPR appear GENAPR airports program report GENAPREQ approval request GENAPRNT apparent GENAPROP appropriate GENAPRX approximate GENAPS airborne pulse search radar GENAPSG after passing ICAOAPV approve GENAPVL approval GENARAC Army radar approach control facility GENARB Air Reserve Base GENARC Area chart ICAOARFOR area forecast GENARINC Aeronautical Radio, Incorporated GENARLO Army Liaison Officer GENARMET forecast upper wind and temperature at specified points GENARML airmail GENARND around GENARNG arrange GENARNOT area notice GENARO air traffic services reporting office GENARO Airport Reservations Office GENARP aerodrome reference point ICAOARP airport reference point GENARP airport reservation position GENARP air-report GENARPT airport GENARQ automatic error correction equipment GENARR arrival or arrive GENARS Air Rescue Service (USAF) GENARS special air-report GENARSR air route surveillance radar GENARST arrest GENARSUP area supervisor GENARTC air route traffic control GENARTCC Air Route Traffic Control Center GENARTS Automated Radar Terminal Sytems GENARU Airborne Radar Unit GENARU Airspace Reservation Unit (Canadian) GENAS altostratus NWSAS/R automatic send/receive GENASAP as soon as possible GENASC ascent to GENASCU automatic scanning control unit GENASD airspace docket GEN

ASDA accelerate-stop distance available GENASDE airport surface detection equipment GENASE Altimetry system error ICAOASGN assign GENASI altimeter setting indicator GENASIP airspace flight inspection pilot GENASL above sea level GENASND ascend GENASO Southern Region- FAA GENASOS automated surface observing system NWSASP airport system plan GENASP airspace GENASPH asphalt GENASR airport surveillance radar GENASSOC associate GENASST assistant GENASW Southwest Region- FAA GENATA Air Transport Association of America GENATAR above transmitted as received GENATC air traffic control GENATCA Air Traffic Control Association GENATCBI ATC beacon interrogator GENATCF ATC facility GENATCH attach GENATCOR ATC operations representative GENATCRBS ATC radar beacon system GENATCS ATC specialist GENATCSCC ATC Systems Command Center GENATCT Airport Traffic Control Tower GENATD air traffic division GENATDO airways technical district office GENATFC account traffic GENATFM air traffic flow management ICAOATIS automatic terminal information service GENATLC Atlantic NWSATM air traffic management ICAOATMT attempt GENATN Aeronautical Telecommunications Network ICAOATND attend GENATO aeronautical telecommunications operator GENATOG allowable take-off gross weight GENATP air traffic procedures GENATPAC Air Traffic Procedures Advisory Committee GENATR air transport rating GENATREP air traffic representative GENATS air traffic service GENATSCCP Air Traffic Service Contingency Command Post GENATT American Telephone and Telegraph Company GENATTM at this time GENATTN attention GENATZ aerodrome traffic zone ICAO

AUGRA authority granted GENAURBO Aurora Borealis NWSAUREQ authority is requested GENAUTH authority GENAUTH authorized ICAOAUTO automatic GENAUTOB automatic weather reporting system GENAUW all up weight (gross weight) GENAUX auxiliary GENAUZ authorize GENAVBL available GENAVG average GENAVGAS aviation gasoline GENAVN aviation GENAWANS Aviation Weather and NOTAM System GENAWBE automatic weather broadcast equipment GENAWOS automatic weather observing/reporting system GENAWP aviation weather processors NWSAWP Western-Pacific Region- FAA GENAWS air weather service (USAF) GENAWT await or awaiting GENAWX account weather GENAWY airway GENAXPS air express GENAZM azimuth GEN

Bbeginning of precipitation (time in minutes) (weather reports only) NWS

B Bering Standard Time (time groups only) NWSB blue GENBA braking action GENBACLIN baroclinic or baroclinic prognosis NWSBAFVC bids accepted for the following vacancies GENBAL balance GENBASE cloud base GENBASOPS Base Operations Office GENBATROP barotropic or barotropic prognosis NWSBC back course GENBC British Columbia NWSBC patches METARBCFG fog patches NWSBCH beach NWSBCKG backing NWSBCM back course marker GENBCM become GENBCN beacon GENBCST broadcast GENBCSTN broadcast station GENBDA Bermuda NWSBDR border GENBDSLD bids solicited GEN

BECMGbecoming (expected between 2 digit beginning hour and 2 digit ending hour) TAF

BFDK before dark NWSBFR before GENBGN began or begin GENBHND behind GENBINOVC breaks in overcast NWSBKN broken METARBL blowing METARBLD build NWSBLDG building ICAOBLDU blowing dust METARBLDUP buildup NWSBLKHLS Black Hills NWSBLKT blanket NWSBLN balloon GENBLO below GENBLO below clouds ICAOBLSA blowing sand METARBLSN blowing snow METARBLW below ICAOBLZD blizzard NWSBMBR bomber GENBMS basic meteorological services NWSBND bound GENBNDRY boundary NWSBNTH beneath GENBOMB bombimg GENBOVC base of overcast NWSBPS bytes per second GENBR branch GENBR mist METARBRAF braking action fair GENBRAG braking action good GENBRAN braking action nil GENBRAP braking action poor GENBRF brief NWSBRG bearing GENBRGT bright GENBRITE bright radar indicator tower equipment GENBRK break NWSBRKG braking ICAOBRKHIC breaks in higher overcast NWSBRKSHR Berkshire NWSBRM barometer NWSBS commercial broadcasting station ICAOBSAF bids solicited as follows GENBTL between layers ICAOBTN between GENBTR better GENBTWN between NWS

BUEC backup emergency communication GENBUL bulletin GENBUR bureau GENBUS business GENBY blowing spray (weather reports only) METARBYD beyond GENBZR buzzer (radar) GENC celsius GENC Central Standard Time (time groups only) NWSC centre (runway ID) ICAOC continental (air mass) NWSCAB Civil Aeronautics Board GENCACT civil air carrier turbojet GENCADO Chief Airport District Office GENCAM Canadian Armed Forces Transport Command GENCAN Canada NWSCANFORCE Canadian Armed Force GENCANO catalogue number GENCANOT Canadian NOTAM GENCANR Canadian NORAD Region GENCAO change of appointing office GENCAP Civil Air Patrol GENCAP/IS combined approach control/international station GENCAPT captain GENCARA check area airports GENCARF central altitude reservation function GENCARIB Caribbean NWSCARU Canadian Airspace Reservation Unit GENCAS collision avoidance system GENCASCDS cascades NWSCAT category GENCAT clear air turbulence GENCAUFN caution advised until further notice GENCAVOK cloud and visiblity OK NWS

CAVUclear or scattered clouds and visibility greater than ten miles NWS

CAWS common aviation weather subsystem NWSCB cumulonimbus NWSCBMAM cumulonimbus mamma NWSCC carbon copy GENCC cirrocumulus NWSCCA continental control area GENCCC Central Computer Complex GENCCC Regional Communications Control Center GENCCD City (or County) Civil Defense Director at____ GENCCLKWS counterclockwise NWSCCRU complete crew GENCCSL standing lenticular cirrocumulus NWSCCTLR chief controller GENCCUS cleared Customs GENCD candela ICAO

CD civil defense GENCD clearance delivery GENCDC computer display channel GENCDFNT cold front NWSCDN coordination ICAOCDO communications duty officer GENCE communications equipment GENCELNAV celestial navigation GENCENGR civil engineer GENCERAP combined center/RAPCON GENCERT certificate GENCERTIF certification GENCF change frequency to ICAOCFAD composite flight data processing GENCFADC Canadian Forces Air Defense Command GENCFCF central flow control function GENCFM confirm GENCFM Confirm or I confirm ICAOCFN confine GENCFP cold front passage NWSCFWSU central flow weather service unit GENCFY clarify GENCG Coast Guard GENCGAS Coast Guard Air Station GENCGL circling guidance light ICAOCGLS Coast Guard LORAN Station GENCGSTN congestion GENCH channel ICAO

CH

This is a channel-continuity-check of transmission to permit comparison of your record of channel-sequence numbers of messages received on the channel ICAO

CHAP chapter GENCHARC characteristic GENCHC chance NWSCHG change GENCHM chemicals GENCHNL channel GENCHOK check okay GENCHRG charge GENCHSPK Chesapeake NWSCHTR charter GENCI cirrus NWSCIC controller in charge GENCIDIN common ICAO data interchange network ICAOCIFRR Common IFR Room GENCIG ceiling NWS

CINCNORADCommander in Chief- North American Aerospace Defense-Command GEN

CIRNOT circuit notice GENCIT near or over large towns ICAOCIV civil ICAO

CK check ICAOCKT circuit GENCL centre line ICAOCL closing station GENCLA clear type of ice formation ICAOCLBN crash locator beacon GENCLBR calibration GENCLD cloud NWSCLG calling ICAOCLKWS clockwise GENCLN colon GENCLNC clearance GENCLODA closing date GENCLOTO close this office GENCLR clear NWSCLRS clear and smooth NWSCLSD closed GENCLU circuit line up GENCM centimeter ICAOCMA comma GENCMB climb to or climbing to ICAOCMNC commence GENCMPCT compact GENCMPL complete or completed or completion ICAOCMPLT complete GENCMPLX complex GENCMPSN composition GENCMPT component GENCMS construction maintenance supervisor GENCMSN commission GENCNCL cancel NWSCNCNT concurrently GENCNCT connect GENCNDN Canadian NWSCNL cancel GENCNS communications, navigation and surveillance ICAOCNSTNT consistent GENCNTR center GENCNTRL central GENCNTRLN centerline GENCNVG converge GENCNVRT convert GENCNVSN conversion GENCNVTV convective NWSCO company GENCO county GENCOB close of business GENCOLL collect GENCOM communication GENCOMB combine GENCOML commercial GEN

COMLO compass locator GENCOMPR compare GENCOMPRT compartment GENCONC concrete GENCOND condition GENCONF confidential GENCONFDC confidence NWSCONFIGN configuration GENCONR Continental NORAD Region GENCONS continues ICAOCONSO CONSOLAN Facility GENCONSOL consol beacon GENCONSOLAN low or medium frequency long range navigational aid GENCONST construction GENCONT continue or continuously GENCONTDVD Continental Divide NWSCONTR contract GENCONTRAILS condensation trails NWSCOORD coordinate GENCOORD Coordinates ICAOCOP changeover point GENCOPCOM Controllers’ Operations and Procedures Committee GENCOR correct or corrected or correction GENCOREQ confirming requisition follows GENCOT at the coast ICAOCOV cover ICAOCP circular polarization GENCPA crash phone activated GENCPBL capable GENCPD coupled GENCPDLC Controller-pilot data link communications ICAOCPF complete power failure GENCPL current flight plan ICAOCPME calibration performance monitoring equipment GENCPN air transport pulse radar navigation aid GENCPS air transport pulse radar search GENCPTY capacity GENCRAD composite radar data processing GENCRAF civil reserve air fleet GENCRC circle GENCRC Cyclic redundancy check ICAOCRCHF crew chief GENCRLC circulate GENCRS course GENCRT cathode ray tube GENCRTFY certify GENCRYPTO cryptographic GENCRZ cruise ICAOCS Call sign ICAOCS cirrostratus NWSCS/C combined station/center GEN

CS/T combined station/tower GENCSDR consider GENCSDRBL considerable GENCSLDT consolidate GENCST coast NWSCTA control area ICAOCTC contact GENCTGY category NWSCTL control GENCTLA control area GENCTLB control boundary GENCTLR controller GENCTLZ control zone GENCTN caution GENCTR control zone ICAOCTRAC common terminal radar approach control GENCTSKLS Catskills NWSCU cumulus NWSCUF cumuliform ICAOCUFRA cumulus fractus NWSCUSNO customs has been notified GENCUST customs ICAOCVN convene GENCVR Cockpit voice recorder ICAOCVR cover GENCW continuous wave ICAOCWM change weight manifest GENCWSU central weather service unit GENCWY clearway ICAOCYC cyclonic NWSCYCLGN cyclogenesis NWSCYL cylinder GENCZM coastal zone management GEND danger area ICAODA decision altitude ICAODABRK daybreak NWSDAE district airport engineer GENDAIRE direct altitude and identification readout equipment GENDALGT daylight GENDAP do all possible GENDASI digital altimeter setting indicator GEND-ATIS Data link automatic terminal information service ICAODB decibel GENDB describe GENDBA doing business as GENDBASI digital barometer altimeter setting indicator GENDBL double GENDBTF doubtful GENDC direct current GENDCA Defense Communications Agency GEN

DCAVUclear or scattered clouds and visibility greater than ten remainder of report missing (weather reports only) NWS

DCD double channel duplex ICAODCF deputy chief GENDCKG docking ICAODCMSN decommission GENDCMT document GENDCPC Direct conroller-pilot communications ICAODCR decrease GENDCS defense communications system GENDCS double channel simplex GENDCT direct ICAODDM difference in depth of modulation GENDE From (used to precede the call sign of the calling station) ICAODECCO Defense Commercial Communications Office GENDEF defense GENDEFCON Defense Readiness Conditions GENDEG degree GENDELPHO deliver by telephone GENDEMOL demolition GENDENEB fog dispersal operations ICAODEP departure GENDEPT department GENDES descend to or descending to ICAODESTN destination GENDEW distant early warning GENDEWIZ distant early warning identification zone GENDF direction finder GENDFCLT difficult GENDFDR Digital flight data recorder ICAODFL daily flight log GENDFNT definite GENDFRS differs GENDFSTN direction finding station GENDFTI distance from touchdown indicator GENDFUS diffuse GENDGCGO dangerous cargo GENDGNL diagonal GENDGR danger GENDH decision height GENDIAM diameter GENDIF diffuse ICAODIR director GENDISABLD disabled GENDISC discontinue GENDISEM disseminate GENDIST distance ICAODIST district GENDISTR distribute GENDIV divert ICAODIV division GEN

DKTS Dakotas NWSDLA delay GENDLIC Data link initiation capability ICAODLT delete GENDLVR deliver GENDLVY delivery GENDLY daily GENDLY Daily ICAODMAAC Defense Mapping Agency Aerospace Center GENDMAHC Defense Mapping Agency Hydrographic Center GENDME distance measuring equipment GENDMEG DME-collocated with glide slope GENDMEL DME-collocated with localizer GENDMER DME-tactical air navigation with DME only commissioned GENDMEV DME-collocated with VOR GENDMG damage GENDMNT dominant GENDMO Directives Management Officer, FAA GENDMSH diminish NWSDMSTN demonstration GENDNA Defense Nuclear Agency GENDNG danger ICAODNS dense NWSDNSLP downslope NWSDNSTRM downstream NWSDO Deputy Commander for Operations GENDO ditto GENDOB date of birth GENDOC Department of Commerce GENDOD Department of Defense GENDOE Department of Energy GENDOLLY data link GENDOM domestic ICAODOT Department of Transportation GENDP deep NWSDP dew point temperature ICAODPNG deepening NWSDPT depth ICAODPTH depth NWSDR direct route GENDR low drifting METARDRCT direct GENDRCTN direction GENDRDU low drifting dust METARDRFT drift NWSDRG during ICAODRIR direct readout infrared GENDRSA low drifting sand METARDRSN low drifting snow METARDRZL drizzle NWSDS domestic services (island operations) GEN

DS dust storm METARDSB double sideband ICAODSGND designated GENDSIPT dissipate NWSDSN Defense Switching Network GENDSNT distant GENDSPL display GENDSPLC displace GENDSPN disposition GENDSPRL dispersal GENDSR desire GENDSRGD disregard GENDST distort GENDSTC distance GENDTE data terminal equipment GENDTF data transmission feature GENDTG date time group GENDTHR Displaced runway threshold ICAODTL detail GENDTLN international dateline NWSDTR data transmission request GENDTRM determine GENDTRT deteriorate NWSDTS Diplomatic Telecommunications Service GENDTW dual tandem wheels ICAODU widespread dust METARDUATS direct user access terminal system GENDUC dense upper cloud ICAODUPE duplicate GEN

DUPEThis is a duplicate message (to be used in AFS as a procedure signal) ICAO

DUR duration ICAODURG during GENDURN duration GENDV distinguished visitors GENDVFR defense VFR GENDVLP develop GEND-VOLMET Data link VOLMET ICAODVOR doppler VHF omni-directional radio range ICAODVRG diverge GENDVRSN diversion GENDVV downward vertical velocity NWSDW dual wheels ICAODWG drawing GENDWNDFTS downdrafts NWSDWPNT dew point NWSDX duplex GENDZ drizzle ICAOE east or eastern longitude ICAOE Eastern Standard Time (time groups only) NWS

Eending of precipitation (time in minutes) (weather reports only) NWS

E equatorial (air mass) NWSE/G engine-generator GENE/R exchange and repair GENEARTS en route automated radar tracking system GENEB eastbound ICAOEBND eastbound GENECM electronic counter measures GENECOM en route communications GENECSP electronic specialist GENEDA early departure authorized GENEEE Error (to be used in AFS as a procedure signal) ICAOEEM electronic equipment modification GENEENGR electrical engineer GENEEP end exercise point GENEET estimated elapsed time ICAOEFA entire field available GENEFAS en route flight advisory service GENEFCT effect GENEFF effective GENEFTO encrypt for transmission only GENEG emergency gear GENEGECON electronic geographic coordinator navigation system GENEHF extremely high frequency (30000 to 300000 MHz) ICAOEIT electronic installation technician GENELAT estimated latitude GENELBA emergency location beacon - aircraft ICAOELEC electric GENELECN electrician GENELEV elevate or elevation GENELIP elliptical GENELMT electronic mechanic technician GENELNGT elongate NWSELONG estimated longitude GENELR extra long range ICAOELSW elsewhere GENELT emergency locator transmitter GENEM emission ICAOEMBD embedded (in cloud layer) ICAOEMBDD embedded NWSEMDO Engineering and Manufacturing District Office GENEMERG emergency GENEMI electronic maintenance inspector GENEMSU environment meteorological support unit NWSEMT electronic maintenance technician GENENCTR encounter GENEND stop-end (related to RVR) ICAOENDCE endurance GENENDG ending GENENE east-north east ICAO

ENERN east-northeastern (weather reports only) NWSENEWD east-northeastward (weather reports only) NWSENG engine GENENGR engineer GENENHNCD enhanced GENENHNCMNT enhancement GENENR en-route ICAOENRC Enroute chart (followed by name/title) ICAOENRT en route GENENTR entire GENEOBT estimated off-block time ICAOEOD entered on duty GENEOF expected operations forecast NWSEQCRT equipment certified GENEQPT equipment ICAOEQUIP equipment GENER here ICAOERAD en route radar (broadband) GENERY early GENESCAT emergency security control of air traffic GENESE east-south east ICAOESEC en route secondary radar beacon (broadband) GENESERN east-southeastern (weather reports only) NWSESEWD east-southeastward (weather reports only) NWSESNTL essential GENEST estimate or estimation GENESTAB establish GENESV expanded service volume GENET electronic technician GENETA estimated time of arrival GENETC et cetera GENETD estimated time of departure GENETE estimated time en route GENETO estimated time over significant point ICAOEU electronic unit GENEUO emergency use only GENEV every ICAOEVAC evacuation GENEVAL evaluate or evaluation GENEVE evening GENEVS electronic voice switching system GENEXAM examination GENEXC except ICAOEXCH exchange GENEXCLD exclude GENEXCLV exclusive GENEXCP except GENEXCT execute GENEXDLVY expedite delivery GENEXEC executive GENEXEC-1 President on board civil aircraft GEN

EXEC-1F President’s family is aboard aircraft GENEXEC-2 Vice President is aboard civil aircraft GENEXEC-2F Vice President’s family is aboard aircraft GENEXER exercise ICAOEXP expect ICAOEXPC expect GENEXPED expedite GENEXPHO expedite delivery by telephone GENEXPS express GENEXREP expedite mail reply GENEXSEC extra section GENEXSHI expedite shipment GENEXTD extend GENEXTN extension GENEXTRAP extrapolate NWSEXTRM extreme NWSEXTSV extensive GENF fahrenheit GENF flight inspection GENFA area forecast NWSFA CENTER Aviation Area Forecast Center GENFAA Federal Aviation Administration GENFAAP federal aid to airports program GENFAAR FAA requirements GENFAC facility GENFACF facility chief GENFAD fuel advisory departure GENFAF final approach fix GENFAFAB FSS assumes flight-plan area and Service B GENFAH fahrenheit NWSFAL facilitation of international air transport ICAOFAM familiar or familiarization GENFAMAE following amendment authorized effective GENFAP final approach point ICAOFAR Federal Aviation Regulations GENFATFL FSS assumes control of tower frequencies and lights GENFAX facsimile GENFBO fixed-base operator GENFC funnel cloud METARFCC Federal Communications Commission GENFCO facility coordination officer GENFCST forecast GENFCWOS FAA Contract Weather Observing Station GENFDAT flight data GENFDC Flight Data Center GENFDDL frequency division data link GENFDPS Flight data processing system ICAOFE flight engineer GENFEW 1 or 2 octas (eighths) cloud coverage METARFFLT familiarization flight GENFFMN fixed federal monitoring network GEN

FG fog METARFGSB FSS guarding Service B GENFI/P flight information (permanent) GENFI/T flight information (temporary) GENFIBI filed but impracticable to transmit NWSFIC Flight Information Center GENFIDO Flight Inspection District Office GENFIFO Flight Inspection Field Office GENFIFO-H Flight Inspection Field Office - High Altitude GENFIG figure GENFIG flight inspection group GENFIL filament GENFILG filling NWSFILS florescan instrument landing system GENFINO weather report will not be filed for transmission NWSFIR Flight Information Region GENFIRAV first available GENFIRB Flight Information Region Boundary GENFIRG firing GENFIS flight information service GENFISA automated flight information service ICAOFL flash advisory NWSFL flight level GENFLCTN fluctuation GENFLD field ICAOFLDST flood stage NWSFLG falling NWSFLG flashing ICAOFLIDAP flight data position GENFLIP flight information publication GENFLORL fluorescent runway lighting (floodlight system) GENFLR flares ICAOFLRY flurry NWSFLT flight GENFLTCK flight check GENFLTO flight orders GENFLTWO flight watch outlet GENFLUC fluctuating ICAOFLW follow GENFLWIS flood warning issued NWSFM fan marker GENFM from GENFMH fan marker located with radio beacon GENFMO frequency management officer GENFMS Flight management system ICAOFMT format GENFMU flow management unit ICAOFNA final approach ICAOFNCTN function GENFNT front NWSFNTGNS frontogenesis NWS

FNTLYS frontolysis NWSFOB fuel on board GENFONE telephone GENFORNN forenoon NWSFP flight plan GENFPDI flight path deviation indicator GENFPL filed flight plan ICAOFPM feet per minute GENFPN fixed pulse radar navigation aid GENFPNO flight plan not received GENFPR flight plan route GENFQT frequent GENFR fuel remaining GENFRC full route clearance GENFREQ frequency GENFRFAB FSS returns flight-plan area and Service B GENFRM form GENFRMG forming NWSFRMN formation GENFRNG firing ICAOFROPA frontal passage NWSFROSFC frontal surface NWSFRQ frequent ICAOFRSB FSS returns Service B GENFRST frost NWSFRTFL FSS returns control of tower frequencies and lights GENFRWF forecast wind factor NWSFRZ freeze NWSFRZLVL freezing level NWSFRZN frozen NWSFSDO Flight Standards District Office GENFSNFO Flight Standards National Field Office GENFSP flight strip printer GENFSS Flight Service Station GEN

FSSCOMFlight Services Station Operations and Procedures- Committee GEN

FT feet GENFT filing time GENFT foot GENFTAR following transmitted as received (message handling) GENFTHR farther or further GENFTS Federal Telecommunications System GENFU smoke METARFURN furnish GENFW/SIFR fixed wing special IFR GENFW/SVFR fixed wing special VFR GENFWA flight watch area GENFWC Fleet Weather Central NWSFWCS flight watch control station GENFWD forward GENFWDC forward collect GEN

FWP flight watch point GENFWRNG fire warning GENFWS flight watch specialist GENFWU flight watch unit GENFYI for your information GENFZ supercooled/freezing METARFZDZ freezing drizzle METARFZFG freezing fog METARFZRA freezing rain METARG Green ICAOG gusts reaching (knots) (weather reports only) NWSG/A ground to air ICAOG/A/G ground to air and air to ground ICAOGA general aviation GENGA glide angle GEN

GAGo ahead, resume sending (to be used in AFS as a procedure signal) ICAO

GADO General Aviation District Office GENGBA give better address GENGBL government bill of lading GENGBR give better reference GENGC ground control GENGCA ground control approach GENGCI ground control intercept GENGEN general GENGENOT general notice GENGEO geographic GENGEOREF geographical reference GENGES ground earth station ICAOGHZ gigahertz GENGICG glaze icing NWSGLD glider ICAOGLDR glider GENGLFALSK Gulf of Alaska NWSGLFCAL Gulf of California NWSGLFMEX Gulf of Mexico NWSGLFSTLAWR Gulf of St. Lawrence NWSGLONASS global navigation satellite system ICAOGLONASS Global orbiting navigation satellite system ICAOGMC Ground movement chart (followed by name/title) ICAOGMT Greenwich Mean Time GENGND ground GENGNDCK ground check ICAOGNDFG ground fog NWSGNSS global navigation satellite system (in general) ICAOGNTR generator GENGOV Governor GENGOVT government GENGP glide path GENGQA get quick answer GENGR hail (greater than 3/4") METAR

GRAD gradient NWSGRADU gradual ICAOGRASS grass landing area ICAOGRBL garble GENGRBNKS Grand Banks NWSGRDL gradual NWSGRID grid point values of processed meteorological data ICAOGRTLKS Great Lakes NWSGRVL gravel GENGS glide slope GENGS snow pellets/small hail (less than 3/4") METARGSA General Services Administration GENGSDO General Safety District Office GENGSI general safety inspector GENGSTS gusts NWSGSTY gusty NWSGTCL Great Circle GENGTR greater GENGUND Geoid undulation ICAOGV ground visibility NWSGVG giving GENGVH government vehicle GENGWT gross weight GENH24 continuous 24-hour service ICAOHAA height above airport GENHADA Hawaiian Defense Area GENHADD Hawaiian Air Defense Division GENHADIZ Hawaiian Air Defense Identification Zone GENHAL height above landing GENHANG Hawaiian Air National Guard GENHAT height above touchdown GENHAZ hazard GENHBN hazard beacon ICAOHCVIS high clouds visible NWSHDF high frequency direction finding station ICAOHDFRZ hard freeze NWSHDG heading ICAOHDSVLY Hudson Valley NWSHDTA high density traffic airport GENHEL helicopter GENHELI heliport GENHF high frequency GENHGT height GENHHE household effects GENHI high NWSHIALS high intensity approach light system GENHIBAL high altitude balloon GENHIEAT highest temperature equaled for all time NWSHIEFM highest temperature equaled for the month NWSHIESE highest temperature equaled so early NWSHIESL highest temperature equaled so late NWS

HIFOR high level forecast NWSHIRL high intensity runway lights GENHITMP highest temperature NWSHIWAS hazardous inflight weather advisory service GENHIXAT highest temperature exceeded for all time NWSHIXFM highest temperature exceeded for the month NWSHIXSE highest temperature exceeded so early NWSHIXSL highest temperature exceeded so late NWSHJ sunrise to sunset ICAOHLDG holding ICAOHLF half GENHLSTO hailstones NWSHLTP hilltop NWSHN sunset to sunrise ICAOHND hundred GENHNGR hangar GENHO service available to meet operational requirements ICAOHOL holiday GENHOP helicopter operations GENHOSP hospital aircraft ICAOHP holding pattern GENHPA hectopascal ICAOHQ headquarters GENHR here GENHR hour GENHRZN horizon GENHS service available during scheduled operations ICAOHTN heterodyne GENHTR heater GENHURCN hurricane NWSHUREP hurricane report NWSHV high voltage GENHVDF high and very high frequency direction finding stations ICAOHVY heavy GENHWVR however GENHWY highway GENHX high index NWSHX no specific working hours ICAOHYD hydraulic GENHYDRO hydrographic GENHYR higher ICAOHZ haze METARHz hertz GEN

IAARCInternational Administrative Aeronautical Radio-Conference GEN

IAC instrument approach chart (followed by name/title) ICAOIAF initial approach fix GENIAO in and out of clouds ICAOIAP instrument approach procedure GENIAR intersection of air routes ICAOIATA International Air Transport Association GEN

IATSCInternational Aeronautical Telecommunications-Switching Center GEN

IAW in accordance with GENIBN identification beacon ICAOIC ice crystals (weather reports only) METARICAO International Civil Aviation Organization GENICG icing NWSICGIC icing in clouds NWSICGICIP icing in clouds and precipitation NWSICGIP icing in precipitation NWSID identification GENIDAT interfacility data GENIDENT identify or identifier or identification GENIDP individual development plan GENIF intermediate approach fix ICAOIF intermediate fix GENIFF identification friend/foe ICAOIFIM International Flight Information Manual GENIFO International Field Office GENIFO interphone GENIFONO interphone (service F) not operative GENIFORO interphone (service F) resumed operation GENIFR instrument flight rules GENIFSS International Flight Service Station GENIFUN if unable GENIGA international general aviation ICAOIGIA Interagency Group on International Aviation GENIIA if incorrect advise GENIISD if incorrect service direct GENILS instrument landing system GENILSP ILS-partial GENIM inner marker GENIMC instrument meteorological conditions GENIMDT immediate NWSIMF interrogation sign GENIMG immigration ICAOIMI Intensity unknown (weather reports only) ICAOIMP impracticable GENIMPL impulse GENIMPR improve ICAOIMPT important GENIMT immediate or immediately GENIN inch GENINA initial approach ICAOINADQT inadequate GENINATS interruption of air traffic services GENINBD inbound ICAOINC in clouds ICAOINC incorporated GENINCL include GENINCLV inclusive GEN

INCOMP incomplete GENINCOR incorrect GENINCR increase GENINDC indicate GENINDEF indefinite GENINDUS industrial GENINF inland navigation facility GENINFO information GENINIT initial training GENINLD inland NWSINOF if not off GENINOP inoperative GENINP if not possible GENINPR in progress ICAOINREQ information request GENINS inertial navigation system ICAOINSP inspect GENINST instrument GENINSTA interstate GENINSTBY instability NWSINSTL install GENINSTR instruct GENINSTR instrument ICAOINSUF insufficient scheduled time available GENINSUF unable to finish GENINT intersection ICAOINTCNTL intercontinental GENINTCP intercept GENINTD intend GENINTER intermittent ICAOINTFC interference GENINTL international GENINTMD intermediate GENINTMT intermittent GENINTNS intentions GENINTR interior NWSINTRG interrogator ICAOINTRMTRGN Inter-Mountain Region NWSINTRP interrupt GENINTS intense NWSINTSF intensify or intensifying ICAOINTSFY intensify NWSINTST intensity GENINTVL interval GENINTXN intersection GENINVES investigate GENINVRN inversion NWSINVSTAR investigate and report GENIOVC in overcast NWSIP instructor pilot GENIPV improve GEN

IR ice on runway NWSIR IFR military training route GENIRAC Interdepartmental Radio Advisory Committee GENIREG irregular GENIS island GENISA international standard atmosphere ICAOISB independent sideband ICAOISMGR Island Manager GENISMLS interim standard microwave landing system GENISOL isolate GENITNRNT itinerant GENITRY itinerary GENITU International Telecommunications Union GENJAL jet approach landing charts GENJCTN junction GENJOUR journeyman GENJTST jet stream ICAOJTSTR jet stream NWSK Cold (air mass) NWSKC kilocycles GENKEPOA keep this office advised GENKFRST killing frost NWSKG kilogram GENKHZ kilohertz GENKM kilometers GENKMH kilometers per hour ICAOKPA kilopascal ICAOKT knots GENKW kilowatt GENL Left ICAOL locator ICAOL logistics GENL/MF low/medium frequency GENLAA local airport advisory GENLAB laboratory GENLABRDR labrador NWSLABS low altitude bombing system GENLAM logical acknowledgement ICAOLAN inland ICAOLAT latitude GENLAWRS Limited Aviation Weather Reporting Station GENLB pounds (weight) GENLC local control GENLCL local or locally GENLCT locate GENLCTMP little change in temperature NWSLD long distance GENLDA landing distance available ICAOLDG landing ICAOLDI landing direction indicator ICAOLDIN lead in lighting system GEN

LEN length ICAOLETFO letter follows GENLF low frequency GENLFC laminar flow control GENLFNT low frequency intersection GENLFR low frequency radio range GENLFT lift NWSLGRNG long range NWSLGT light GENLGTD lighted ICAOLGWV long wave GENLICOF land lines communications facilities GENLIFR low IFR (weather reports only) NWSLIH light intensity high ICAOLIL light intensity low ICAOLIM light intensity medium ICAOLIN linearity GENLIRL low intensity runway edge lights GENLK lake NWSLKLY likely GENLL landline GENLLWAS low level wind shear alert system GENLLWS low level wind shear GENLLZ localizer ICAOLM locator middle ICAOLMM compass locator at ILS middle marker GENLMT limit GENLMT Local Mean Time ICAOLN line GENLND land GENLNDG landing GENLO liaison officer GENLO outer locator ICAOLOA letter of agreement GENLOC localizer GENLOC locally ICAOLOCOR local coordinator GENLODISNAV long distance navigation GENLOEAT lowest temperature equaled for all time NWSLOEFM lowest temperature equaled for the month NWSLOESE lowest temperature equaled so early NWSLOESL lowest temperature equaled so late NWSLOM compass locator at ILS outer marker GENLONG longitude GENLONGL longitudinal GENLOP line of position GENLORAC long range accuracy GENLORAN long range air navigation system GENLOTMP lowest temperature NWSLOXAT lowest temperature exceeded for all time NWSLOXFM lowest temperature exceeded for the month NWS

LOXSE lowest temperature exceeded so early NWSLOXSL lowest temperature exceeded so late NWSLP liquid propane GENLR The last message received by me was …. ICAOLRA landing rights airport GENLRCOM long range VHF/UHF communications GENLRG large GENLRG long range GENLRS lake reporting service GEN

LSThe last message sent by me was …or last message was… ICAO

LSQ line squall ICAOLSR loose snow on runway NWSLST Local Standard Time GENLTAV light and variable GENLTD limited ICAOLTGCA lightning cloud-to-air NWSLTGCC lightning cloud-to-cloud NWSLTGCCCG lightning cloud-to-cloud,cloud to ground NWSLTGCG lightning cloud-to-ground NWSLTGCW lightning cloud-to-water NWSLTGIC lightning in clouds NWSLTL little GENLTLCG little change NWSLTNG lightning NWSLTR later GENLTR letter GENLTT landline teletypewriter ICAOLTTR latter GENLV leaving GENLV light and variable ICAOLVE leave or leaving ICAOLWR lower GENLX low index NWSLYR layer or layered or layers NWS

Min RVR indicates visibility less than lowest reportable sensor value (e.g. M600) METAR

M in temperature field means "minus" or below zero METARM Mach number GENM maritime (air mass) NWSM metres (preceded by figures) ICAOM missing (weather reports only) NWSM Mountain Standard Time (time groups only) NWSMA map analysis NWSMAA maximum authorized (IFR) altitude GENMAC Military Airlift Command GENMACKAY Mackay Radio and Telegraph Company GENMAG magnetic GENMAGSI minimum altitude at glide slope intersection inbound GENMAINT maintenance GENMALS medium intensity approach lighting system GEN

MALSFmedium intensity approach lighting system with sequenced flashers GEN

MALSRmedium intensity approach lighting system with runway alignment indicator lights GEN

MAM maintenance assumes monitor GENMAN Manitoba NWSMAN manual GENMANAM manual amendment GENMANOP manual of operations GENMAP aeronautical maps and charts ICAOMAP missed approach point GENMAPS Meteorological Aeronautical Presentation System GENMAPT missed approach point ICAOMAR at sea ICAOMARPT municipal airport GENMARSA military assumes responsibility for separation of aircraft GENMAS manual A1 simplex ICAOMAS military alert system GENMAX maximum GENMB marker beacon GENMB millibars GENMCA minimum crossing altitude GENMCAS Marine Corps Air Station GENMCAS(H) Marine Corps Air Station (Helicopter) GENMCK maintenance check GENMCW modulated continous wave ICAOMCZNE minimum when control zone effective GENMDA minimum descent altitude GENMDF medium frequency direction finding station ICAOMDFY modify GENMDH minimum descent height ICAOMDT moderate GENMDZ modernize GENMDZN modernization GENMEA minimum en route altitude GENMECH mechanic GENMED medical GENMED medium GENMEGG merging NWSMEHT minimum eye height over threshold ICAOMEML memorial GENMET meteorological GENMETAR aviation routine weather report ICAOMETOF meteorological officer GENMETRO metropolitan GENMEX Mexico NWSMF medium frequency GENMFS military flight service GENMGMT management GENMGR manager GENMHA minimum holding altitude GEN

MHDFmedium and high frequency direction-finding station (same location) ICAO

MHDG magnetic heading GENMHFR military height finder radar GENMHKVLY Mohawk Valley NWS

MHVDFmedium high and very high frequency direction-finding station (same location) ICAO

MHz megahertz GENMI manufacturing inspector GENMI mile GENMI shallow METARMID middle GENMID mid-point (related to RVR) ICAOMIDIZ Mid-Canada Identification Zone GENMIDN midnight NWSMIDPT midpoint GENMIFG patches of shallow fog not deeper than two meters NWSMIFG shallow fog METARMIL military GENMIMNO mimeographic notice GENMIN minute GENMIREQ minimum requirements specified GENMIRL medium intensity runway edge lights GENMIS Missing …(transmission identification) ICAOMISC miscellaneous GENMISG missing GENMISL missile GENMKD marked GENMKR marker GENMKR marker radio beacon ICAOMLS microwave landing system GENMLTLVL melting level NWSMM millimeter GENMMO main meteorological office NWSMNLD mainland NWSMNLY mainly GENMNM minimum ICAOMNT monitor ICAOMNTN maintain ICAOMNVR maneuver GENMOA memorandum of agreement GENMOA military operations area GENMOC minimum obstacle clearance (required) ICAOMOCA minimum obstruction clearance altitude GENMOD modulate or modulation or modulator GENMOGR moderate or greater NWSMON above mountains ICAOMONOK monitor resumed normal operation GENMONOS monitor out of service GENMONTR monitor NWSMOPS Minimum operational performance standards ICAO

MOPTAR multi-object phase tracking and ranging GENMOREPS monitor station reports GENMOT Ministry of Transport (Canada) GEN

MOTNEMeteorological Operational Telecommunications-Network Europe ICAO

MOV move NWSMPH miles per hour GENMPP Merit Promotion Program GENMPS meters per second ICAOMRA minimum reception altitude GENMRG medium range GENMRGL marginal NWSMRM maintenance returns monitor GENMRNG morning NWSMRP ATS/MET reporting point ICAOMRR mechanical reliability report GENMRTM maritime NWSMRU Military Radar Unit GENMS minus NWSMSA minimum safe/sector altitude GENMSAW minimum safe altitude warning GENMSG message GENMSGCTR message center GENMSL mean sea level GEN

MSRMessage …(transmission identification) has been misrouted ICAO

MSSR Monopulse secondary surveillance radar ICAOMSTLY mostly NWSMSTR moisture NWSMT mountain ICAOMTCA minimum terrain clearance altitude GENMTN mountain NWSMTR military training route GENMTRL material GENMTRY momentary GENMTU metric units ICAOMTW mountain wave ICAO

MUdesignate a friction value representing runway surface conditions (Greek letter) GEN

MUA maximum usable altitude GENMUF maximum usable frequency GENMULT multiple GENMUNI municipal GENMV millivolt GENMVA minimum vector altitude GEN

MVDFmedium and very high frequency direction-finding station (same location) ICAO

MVFR marginal VFR NWSMWO Meteorological Watch Office ICAO

MWTCSmodernized weather teletypewriter communications system GEN

MXD mixed NWSN north or northern latitude ICAON/A not applicable GENNA not authorized GENNAAS Naval Auxiliary Air Station GENNAATS National Association of Air Traffic Control Specialists GENNAB not above GENNACOS national communications schedule GENNADIN National Airspace Data Interchange Network GENNAF Naval Air Facility GENNAFEC National Aviation Facilities Experimental Center GENNANAC National Aircraft Noise Abatement Council GENNAP not at present GENNAR North American Route GENNAR not according to routine GENNAS National Airspace System GENNAS Naval Air Station GENNASA National Aeronautics and Space Administration GENNASC National AIS system centre ICAONASP National Airport System Plan GENNAT North Atlantic GENNATCAS Navigation, ATC, and Collision Avoidance System GENNATCC National Air Transport Coordinating Committee GENNATCOM National Communications Center GENNATL national GENNATS noise abatement test system GENNAV navigation GENNAVAID navigational aid GENNAVLO Navy Liaison Officer GENNAVREP Navy Representative to the FAA GENNB New Brunswick NWSNB northbound ICAONBCAP national beacon code allocation plan GENNBFR not before ICAONBND northbound GENNBRHD neighborhood GENNC no change GENNCDC National Climatic Data Center GENNCS National Communications System GENNCWX no change in weather NWSNDB nondirectional radio beacon GENNDB/DME NDB and DME (collocated) GENNE north-east ICAONEB north-eastbound ICAONEC necessary GENNEG negative GENNELY northeasterly (weather reports only) NWSNERN northeastern NWSNESS national environmental satellite service GENNEW ENG New England NWSNFDC National Flight Data Center GEN

NFDD National Flight Data Digest GENNFLD Newfoundland NWSNFQ night frequency GENNFT no filing time GENNFU not for us GENNG National Guard GENNGT night NWS

NICSNational Airspace System Interfacility Communications System GEN

NIL none GENNIL unable to transmit GENNIS not in system GENNL no layers NWSNLT not later than GENNM nautical mile GENNMBR number NWSNMC National Meteorological Center GENNML normal GENNMN no middle name GENNMR nautical mile radius GENNMRS numerous GENNNE north-north east ICAONNERN north-northeastern (weather reports only) NWSNNEWD north-northeastward (weather reports only) NWSNNW north-north west ICAONNWRN north-northwestern (weather reports only) NWSNNWWD north-westward (weather reports only) NWSNO No (negative) ICAONO not available METARNOAA National Oceanic and Atmospheric Administration GENNOAC no action necessary GENNOF NOTAM Office GENNOFIN no further information GENNOIFN no information GENNOMAD Naval Oceanographic Meteorological Automatic Device GENNONEG negative replies not required GENNOPT no procedure turn required GENNORAD North American Aerospace Defense Command GENNORDO no radio GENNOREC no record GENNOREP no report GEN

NORPIno pilot balloon observation will be filed next collection unless weather changes significantly NWS

NORR no reply received GENNORST no restrictions GENNOS National Ocean Service GENNOSI now simultaneous GENNOSIG no significant change ICAONOSPL no special observations taken (weather reports only) NWSNOSUM NOTAM Summary GENNOTAM Notice to Airmen GEN

NOZ normal operating zone GENNOZ Normal operating zone ICAONPI nonprecision instrument GENNPRS nonpersistent NWSNR near GENNR number GENNRAB Naval Reserve Air Base GENNRD no record of destination GENNRH no reply heard ICAONRV nonrevenue GENNRW narrow GENNS nimbostratus NWSNS Nova Scotia NWSNSC no significant cloud ICAONSCSWD no small craft or storm warning are being displayed NWSNSP nonstandard holding pattern GENNSSFC National Severe Storm Forecast Center GENNSTP nonstop GENNSW no significant weather METARNTE not to exceed GENNTFND no trouble found GENNTFY notify GENNTL National ICAONTO name to GENNTSB National Transportation Safety Board GENNTZ No transgression zone ICAONUDET nuclear detonation GENNVA negative vorticity advection NWSNW north-west ICAONWB north-westbound ICAONWLY northwesterly (weather reports only) NWSNWRN northwestern (weather reports only) NWSNWS National Weather Service GENNWSO Naval Weather Service Office GENNXT next GENO/F on file GENO/R on request GENO/T overtime GENOAC oceanic area control GENOAG Official Airline Guide GENOANDR operation and regulation GENOARTS oceanic air route tracking system GENOAS obstacle assessment surface ICAOOAT outside air temperature GENOB on board GENOBL obliterate GENOBS observation NWSOBSC obscure NWSOBST obstacle ICAOOBST obstruct GENOBSTN obstruction GEN

OC obstruction chart GENOCA obstacle clearance altitude ICAOOCA oceanic control area ICAOOCAC oceanic ATC GENOCFNT occuluded front NWSOCH obstacle clearance height ICAOOCL obstacle clearance limit ICAOOCLD occlude NWSOCLN occlusion NWSOCNL occasional GENOCR occur GENOCS obstacle clearance surface ICAOODALS omnidirectional approach lighting system GENOFAS overseas flight assistance service GENOFC office GENOFFL official GENOFM out for maintenance GENOFP occluded frontal passage NWSOFP original flight plan GENOFSHR offshore NWSOFW off watch GENOFZ Obstacle free zone ICAOOGN Originate ICAOOHD overhead ICAOOINT omni intersection GENOJT on-the-job training GENOK operating normally GENOK We agree or it is correct ICAOOLDI On line data interchange ICAOOM outer marker GENOMSG our message GENOMTNS over mountains NWSONSHR on shore NWSONT Ontario NWSONW on watch GENOOT out of tolerance GENOPA opaque, white type of ice formation ICAOOPC operational control ICAOOPDT opposite direction traffic GENOPER operate GENOPMET operational meteorological (information) ICAOOPN open ICAOOPN operation GENOPNML operations normal GENOPR operate, operator, operational ICAOOPS operations ICAOORD order, indication of ICAOORGPHC orographic NWSORIG original GENORL overrun lights GENOSV ocean station vessel NWS

OTAS on top and smooth NWSOTFC overflight traffic GENOTLK outlook NWSOTR other GENOTRW otherwise GENOTS organized track system GENOTS out of service GENOUBD outbound ICAOOVC overcast NWSOVD overdue GENOVHD overhead GENOVLA overlay GENOVNGT overnight GENOVR over GENOVRN overrun GENOVSEA overseas GENOVTK overtake GENOW one way GENOWF optimum working frequency GENOXY oxygen GEN

Pin RVR indicates visibility greater than highest reportable sensor value (e.g. P600FT) METAR

P Pacific Standard Time (time group only) NWSP polar (air mass) NWSP prohibited area ICAOP/CG pilot controller glossary GENP6SM visibility greater than 6 SM (TAF only) METARPA precision approach GENPA pressure altitude GENPAC Pacific NWSPACF parent FSS assumes control of part-time FSS GENPAEW personnel and equipment working GENPAJA parachute jumping activities GENPALS precision approach lighting system ICAOPANS procedures for air navigation services ICAOPAPI precision approach path indicator GENPAR precision approach radar GENPARA paragraph GENPAREN parenthesis GENPARL parallel ICAOPAT pattern GENPATC Precision approach terrain chart ICAOPATWAS pilots automatic telephone weather answering service GENPAU present address unknown GENPAX passenger ICAOPBCT proposed boundary crossing time GENPBL probable NWSPBS public buildings service GENPCA positive control area GENPCD proceed ICAOPCL pilot controlled lighting GEN

PCL Pilot controlled lighting ICAOPCN pavement classification number ICAOPCPN precipitation NWSPCS permanent change of station GENPD period GENPDAR preferential arrival/departure route (Stage A) GENPDC Pre-departure clearance ICAOPDMT predominant NWSPDMT predominate NWSPDR preferential departure route (Stage A) GENPDW priority delayed weather NWSPEN peninsula NWSPER performance ICAOPERCOM peripheral communications GENPERF perforator GENPERM permanent GENPFSV pilot to forecaster service GENPGTSND Puget Sound NWSPHYS physical GENPIB Pre-flight information bulletin ICAOPIBAL pilot balloon observation NWSPIC pilot in command GENPIR precision instrument runway GENPIREP pilot weather report GENPIRFC pilot requests forecast GEN

PISEno pilot balloon observation due to unfavorable sea conditions NWS

PISO no pilot balloon observation due to snow NWSPIT pilot instructor training GEN

PIWIno pilot balloon observation due to high or gusty surfacewind NWS

PJE parachute jumping exercise ICAOPK WND peak wind (weather reports only) NWSPL ice pellets METARPLF private line telephone GENPLN flight plan ICAOPLOB place of birth GENPLS please GENPLT private line teletypewriter GENPLVL present level ICAOPLW plow (snow) NWSPM post meridiem GENPMSN permission GENPMT permit GENPN prior notice required ICAOPNHDL panhandle NWSPO dust devils METARPO post office GENPO purchase order GENPOA privately owned aircraft GENPOB persons on board ICAO

POS positive GENPOSS possible ICAOPOV privately owned vehicle GENPP pay period (number) GENPPI plan position indicator ICAO

PPINAradar weather report not available (or omitted for a reason different than those otherwise stated) NWS

PPINE radar weather report no echoes observed NWS

PPINOradar weather report equipment inoperative due to breakdown NWS

PPIOK radar weather report equipment operation resumed NWS

PPIOMradar weather report equipment inoperative due to maintenance NWS

PPR prior permission required GENPPS propose GENPR partial METARPR photo reconnaissance GENPRBL probable GENPRBLTY probability NWSPRCF parent FSS returns control of part-time FSS GENPRCHT parachute GENPRCTN precaution GENPRECD precede GENPRES pressure GENPRESFR pressure falling rapidly NWSPRESRR pressure rising rapidly NWSPREV previous GENPRFG fog partial METARPRI primary ICAOPRIM primary GENPRIN principal GENPRIND present indications are GENPRIRA primary radar GENPRJMP pressure jump (weather reports only) NWSPRKG parking ICAOPRN pseudo random noise GENPROB probability ICAOPROB30 slight chance METARPROB40 probability 40 percent METARPROC procedure GENPROCD proceed GENPROG prognosis or prognostic NWSPROG progress GENPROP propeller GENPROPA propagation GENPROSIG procedure signal GENPROV provisional ICAOPRP prepare GENPRSNT present NWSPRST persist GENPRVD provide GEN

PS passenger service GENPS plus NWSPSBL possible GENPSBT pilot self-briefing terminal GENPSG passage NWSPSG passing NWSPSGR passenger GENPSN position GENPSNAL personal GENPSNL personnel GENPSP pierced steel planking ICAOPSR packed snow on runway NWSPSR Primary surveillance radar ICAOPSRI position subject to return of incumbent GENPSRS position subject to rotating shifts GENPST Pacific Standard Time GENPT procedure turn GENPTCHY patchy NWSPTCP participate GENPTLY partly NWSPTN portion GENPTN procedure turn ICAOPTR printer GENPTS polar track structure ICAOPUB public GENPUBL publish GENPUP pickup GENPVA positive vorticity advection NWSPVASI pulsating/steady visual approach slope indicator GENPVL prevail GENPVLT prevalent GENPVT private GENPWB pilot weather briefing GEN

PWINOprecipitation identifier information not available (weather reports only) NWS

PWR power GENPWRNO power failure GENPWROK power restored GENPY spray METARQDM magnetic heading ICAOQDR magnetic bearing ICAOQFE atmospheric pressure at airport elevation ICAOQFLOW quota flow control procedures GENQFU magnetic orientation of runway ICAOQLFY qualify GENQLTY quality GENQN question GEN

QNHaltimeter sub-scale setting to obtain elevation when on the ground ICAO

QNTY quantity GENQSTNRY quasistationary NWS

QTE true bearing ICAOQTR quarter GENQUAD quadrant GENQUE Quebec NWSR Acknowledgement of receipt (message handling) GENR Received (acknowledgement of receipt) ICAOR restricted area (followed by identification) ICAOR right (runway identification) ICAOR runway (used in RVR measurement) METARR/O receive only GENR/OC receive, only centers GENRA rain METARRAAF Royal Australian Air Force GENRABA no RAWIN obs., no balloons available NWSRABAL radiosonde balloon wind data NWSRABAR radiosonde balloon release NWSRAC rules of the air and air traffic services ICAORACFI radio and communication facilities inoperative GENRACO no RAWIN obs., communications out NWSRACON radar responder beacon GENRADAT radiosonde observation data NWSRADNO report missing account radio failure NWSRADON radar beacon GENRADU weather radar analysis and development unit GENRAF Royal Air Force GENRAFC regional area forecast center ICAORAFI radiosonde observation not filed NWSRAFRZ radiosonde observation freezing levels NWSRAG ragged ICAORAG runway arresting gear ICAORAGF remote air-ground facility GENRAHE no RAWIN obs., no gas available NWSRAI runway alignment indicator ICAORAICG radiosonde observation icing at NWSRAIL runway alignment indicator lights GENRAIM Receiver autonomous integrity monitoring ICAORAM returned account mechanical GENRAOB radiosonde observation NWSRAPCON radar approach control GENRAPI radiosonde report already sent in PIBAL collection GENRARAD radar advisory GENRAREP radar weather report NWSRASC Regional AIS system centre ICAORASH rain showers ICAORASN rain and snow or showers of rain and snow METARRATCF radar ATC facility (USN) GENRAVU radiosonde analysis and verification unit NWSRAWE no RAWIN obs. unfavorable weather NWSRAWI no RAWIN obs. high and gusty winds NWSRAWIN upper winds obs. (by radio methods) NWSRAWX returned account weather GEN

RB rescue boat ICAORBDE radar bright display equipment GENRBN radio beacon GENRBS radar bomb scoring GENRC road reconnaissance GENRCA reach cruising altitude ICAORCAG remote communications air/ground facility GENRCC Rescue Coordination Center GENRCD radar cloud detection report NWSRCDNA radar cloud detection report not available NWSRCDNE radar cloud detection report no echoes observed NWSRCDNO radar cloud detector inoperative due to breakdown until NWSRCDOM radar cloud detector inoperative due to maintenance until NWSRCF radio communication failure ICAORCF radiocommunication failure ICAORCH reach GENRCKY Rockies (mountains) NWSRCL runway center line ICAORCLL runway center line lights ICAORCLM runway centerline marking GENRCLR radio communications link repeater GENRCLS runway centerline light system GENRCLT radio communications link terminal GENRCMD recommend GENRCN Royal Canadian Navy GENRCO remote communication outlet GENRCOM en route communications GENRCPT receipt GENRCR runway condition reading GENRCRD record GENRCV receive GENRCVNO receiving capability out GENRDARA regional and domestic air route area GENRDAT radar data (digitized) GENRDC reduce GENRDG ridge NWSRDH eference datum height (ILS) ICAORDL radial ICAORDO radio ICAORDS radius GENRDSP redispatch GENRDSPA redispatch accepted GENRDWND radar dome wind NWSRE regard GENREBAT reference BATCS report GENREC receive ICAORECLR recleared ICAORECON reconnaissance GENRECON reference conversation GENREDL runway edge light ICAOREF reference GEN

REFONE reference our telephone conversation GENREFORM reference form GENREG registration ICAOREG regulation GENREIL runway end identifier lights GENREINV reference invoice GENRELBL reliable GENRELCT relocate GENRELET reference letter GENREMES reference message GENREMT relief electronic maintenance technician GENRENL runway end light ICAORENOT regional office notice GENREP report or reporting point ICAOREP represent or representative GENREP research project GENREPAML reply by airmail GENREPBS reference PBS message GENREPERF reperforator GENREPMES reply by message GENREPML reply by mail GENREPTWX reply by TWX GENREQ request GENREQID request if desired GENREQON request consideration GENREQRCM request your recommendation GENREQSTD requested GENRERTE reroute ICAORES reserve GENRES resident GENRESA Runway end safety area ICAORESP response GENRESTR restrict NWSRF radio frequency GENRFI radio frequency interference GENRFI ready for issue GENRFL refuel GENRFS refuse GENRG range (lights) ICAORGD ragged NWSRGLR regular GENRGN region GENRH relative humidity NWSRHC Right-hand circuit ICAORHI range height indicator GENRHINO radar echo height information not available NWSRHINO radar range height indicator not operating on scan NWSRIF reclearance in flight ICAORIF reduction in force GENRIMAT must ride company material GENRIOGD Rio Grande NWS

RIS reports identification symbol GENRITE right (direction of turn) ICAORL report leaving ICAORLA relay to ICAORLANO relay equipment out of operation GENRLAOK relay equipment resumed operation GENRLBG relative bearing GENRLCE request level change en route ICAORLLS runway lead-in lighting system ICAORLNA request level not available ICAORLS release GENRLSTN relay station GENRLTV relative GENRLV relieve GENRLVL report level GENRMK remark ICAORMLR radar microwave link repeater GENRMLT radar microwave link terminal GENRMN remain GENRMRK remark GENRNAV area navigation GENRNFL rainfall NWSRNG Army National Guard GENRNG radio range ICAORNP required navigation performance ICAORO regional office GENRO regulated output GENROBEPS radar operating below prescribed standard NWSROBEX regional OPMET bulletin exchange ICAOROC rate of climb ICAOROCC NORAD Region Operations Control Center GENROD rate of descent ICAOROFOR route forcast ICAOROLET reference letter from our office GENROMEMO reference our memorandum GENROMES reference message from our office GENRON remaining overnight GENROPBS reference PBS message from our office GENRORQN reference requisition from our office GENROT rotate GENROTEL reference telegram from our office GENROTG rotating GENROTWX reference our TWX GENRPD rapid NWSRPFOD reported for duty GENRPI Radar position indicator ICAORPL repetitive flight plan ICAORPLC replace GENRPM rotation per minute GENRPR repair GENRPRT report GEN

RPS radar position symbol ICAORPT repeat GENRPT Repeat or I repeat ICAORQ Indication of a request ICAORQ request GENRQMNTS requirements ICAORQN requisition GENRQP request flight plan ICAORQP request permission GENRQR require GENRQRP request reply GENRQS request supplementary flight plan ICAORR low or medium frequency radio range stations GENRR radar range station GENRR report reaching ICAORRCVR remote receiver GENRRL runway remaining lights GENRRP runway reference point GENRRPD runway reference point downwind GENRRPU runway reference point upwind GENRS receiver station GENRS record special observation (weather reports only) NWSRSC rescue sub-center ICAORSCD runway surface condition ICAORSCU rescue GENRSG rising NWSRSN reason GENRSOPN resumed operation GENRSP responder beacon ICAORSR en route surveillance radar ICAORSTR restrict GENRSU runway supervisory unit GENRSVN reservation GENRT round trip GENRTD delayed ICAORTE route GENRTF radiotelephone GENRTG radiotelegraph GENRTHL runway threshold light ICAORTMTR remote transmitter GENRTN return ICAORTND retained GENRTNE routine GENRTRD retard GENRTRN return GENRTS return to service GENRTT radioteletypewriter GENRTZL runway touchdown zone light ICAORUF rough NWSRUFORM reference your form GENRULET reference letter from your office GEN

RUMEMO reference your memorandum GENRUMES reference message from your office GENRURQN reference requisition from your office GENRUT standard regional route transmitting frequencies ICAORUTEL reference telegram from your office GENRUTWX reference your TWX GENRV rescue vessel ICAORVO runway visibility by observer GENRVR runway visual range GENRVRA RVR ten minute average GENRVRANO RVR ten minute average not available GENRVRENO RVR ten minute extremes not available GENRVRM RVR midpoint GENRVRMNO RVR midpoint not available GENRVRNO RVR not available GENRVRR RVR rollout GENRVRRNO RVR rollout not available GENRVRT RVR touchdown GENRVRTNO RVR touchdown not available GENRVS revise GENRVV runway visibility value GENRVVNO RVV not available GENRWY runway ICAORY runway GENS South or southern latitude ICAOS/A semi-annual GENS/RC send/receive center GENSA duststorm, sandstorm, rising dust or sand METARSA record observation (weather reports only) NWSSA sandstorm or dusting ICAOSA surveillance approach GENSABH simultaneous automatic broadcast homer GENSADT same direction traffic GENSAFI semi-automatic flight inspection GENSAFI semi-automatic flight inspection aircraft GENSALS short approach lighting system GENSALS simple approach lighting system ICAOSAN sanitary ICAOSAO surface aviation observation NWSSAP as soon as possible ICAOSAPD speed at pilots discretion GENSAR search and rescue GENSARPS standards and recommended practices ICAOSASK Saskatchewan NWSSATCOM satellite communication ICAOSATFY satisfy or satisfactory GENSAVASI simplified abbreviated visual approach slope indicator GENSAWRS supplementary aviation weather reporting station GENSB southbound ICAOSBSD subside NWSSC stratocumulus NWS

SCAN self-correcting automatic navigation GENSCANO automatic scanning unit out of service GENSCAOK automatic scanning unit returned to service GENSCAT security control of air traffic GENSCATANA security control of air traffic and air navigation aids GENSCC System Command Center GENSCLN semicolon GENSCND second (in line) GENSCS single channel simplex GENSCSL standing lenticular stratocumulus NWSSCT scattered NWSSCTR sector GENSCTY security GENSDB scheduled data base GENSDBY standby GENSDF simplified directional facility GENSE south-east ICAOSE system engineer GENSEADRM seadrome GENSEB south-eastbound ICAOSEC second (time) GENSECMR sector manager GENSECRA secondary radar GENSECT sector ICAOSEL space environment laboratory GENSELS severe local storms NWSSELY southeasterly (weather reports only) NWSSENS sensitivity GENSEPN separation GENSEQ sequence GENSER service ICAOSERN southeastern (weather reports only) NWSSES supervisory electronics specialist GENSESC space environment service center GENSEV severe ICAOSF standard form GENSFA single frequency approach GENSFC surface GENSFERICS atmospherics NWSSFL sequence flashing lights GENSFO sector field office GENSFU sector field unit GENSG snow grains (weather reports only) METARSGD signed GENSGD solar-geophysical data NWSSGFNT significant GENSGL signal GENSH showers METARSHF super high frequency GENSHFT shift (weather reports only) NWSSHGR hail showers METAR

SHGS hail showers (small) METARSHLW shallow NWSSHORN short range navigation system GENSHP standard holding procedure GENSHPL ice pellet showers METARSHRA rain showers METARSHRT short GENSHRTLY shortly NWSSHRTWV shortwave GENSHSN snow showers METARSHTDN shutdown GENSHWR shower NWSSI straight-in approach GENSIA standard instrument approach GENSIAP standard instrument approach procedure GENSID standard instrument departure GENSIERNEV Sierra Nevada NWSSIF selective identification feature ICAOSIG signature GENSIGMET significant meteorological information GENSIGWX significant weather ICAOSIMUL simultaneous GENSIR snow and ice on runway NWSSIWL single isolated wheel load ICAOSJP standard jet penetration GENSKC sky clear METARSKED schedule GENSL sea level GENSL sick leave GENSLCT select GENSLD solid NWSSLGT slight GENSLMM simultaneous compass locator at middle marker GENSLO slow GENSLOM simultaneous compass locator at outer marker GENSLP sea level pressure METARSLP slope GENSLP speed limiting point ICAOSLR slush on runway NWSSLRAP standard low frequency range approach GENSLS side lobe suppression GENSLT sleet NWSSLW slow ICAOSM statute mile GENSMC squawk mode code GENSMC surface movement control ICAOSML small GENSMR statute mile radius GENSMR surface movement radar ICAOSMRY summary GENSMS synchronous meteorological satellite GEN

SMS systems maintenance sector GENSMT submit GENSMTH smooth NWSSMTM sometime GENSMWHT somewhat GENSN snow METARSN strategic navigation GENSN systems navigation GENSNBNK snowbank NWSSND sand or sanded or sanding GENSNFLK snowflake NWSSNGL single GENSNOINCR snow depth increase in past hour NWS

SNOWTAM

NOTAM reporting the presence or removal of hazardous conditions due to snow, ice, slush or standing water associated with snow, slush or ice on the movement area ICAO

SNSH snow showers ICAOSNW snow NWSSNWFL snowfall NWSSOCC NORAD Sector Operations Control Center GENSOMSG see our message GENSOP standard operating procedure GENSORAP standard omni range approach GENSP standard holding pattern GENSP station pressure NWSSPAN stored program for alpha numerics GENSPB seaplane base GENSPCLY especially GENSPD speed GENSPEC specification GENSPECI aviation selected special weather report METARSPKL sprinkle NWSSPL special GENSPL supplementary flight plan ICAOSPLNS south plains NWSSPOT spot wind ICAOSPRD spread NWSSPRL spiral GENSQ squall METARSQDN squadron GENSQLN squall line NWSSR standard range approach GENSR sunrise GENSRA surveillance radar approach ICAOSRCH search GEN

SREsurveillance radar element of precision approach radar system ICAO

SRG short range ICAOSRND surround GENSRPN special requisition priority number GENSRR search and rescue region ICAO

SRY secondary ICAOSS sandstorm METARSS sunset GEN

SSALFsimplified short approach lighting system with sequenced flashers GEN

SSALRsimplified short approach lighting system with runway alignment indicator lights GEN

SSALS simplified short approach lighting system GENSSB single sideband ICAOSSE south-south east ICAOSSERN south-southeastern (weather reports only) NWSSSEWD south-southeastward (weather reports only) NWSSSR secondary surveillance radar GENSST supersonic transport ICAOSSW south-south west ICAOSSWRN south-southwestern (weather reports only) NWSSSWWD south-southwestward (weather reports only) NWSST saint GENST stratus NWSSTA straight in approach ICAOSTADMR station administrator GENSTAGN stagnation NWSSTALO stabilized local oscillator GENSTAR standard terminal arrival GENSTBL stable GENSTD standard GENSTDY steady GENSTF stratiform ICAOSTFRA stratus fractus NWSSTFRM stratiform NWSSTG strong NWSSTLT satellite GENSTM storm NWSSTMGR station manager GENSTN station GENSTNR stationary ICAOSTNRY stationary NWSSTOL short take-off and landing GENSTRO stereo routes GENSTS status ICAOSTWL stopway light ICAOSTWY stopway GENSUB substitute GENSUBFIX subject to correction GENSUBJ subject to ICAOSUF sufficient GENSUG suggest GENSUP supply GENSUPCHG supercharge GENSUPPL supplement GENSUPPS regional supplementary procedures ICAO

SUPR superior GENSUPSD supersede GENSUPT superintendent GENSUPVR supervisor GENSUSP suspend GENSVC service GENSVCBL serviceable ICAOSVFR special VFR GENSVG serving GENSVN space vehicle number GENSVR severe GENSVRL several GENSW south-west ICAOSWAP severe weather avoidance plan GENSWB scheduled weather broadcast GENSWB south-westbound ICAOSWLG swelling NWSSWLY southwesterly (weather reports only) NWSSWRN southwestern (weather reports only) NWSSWY stopway ICAOSX stability index NWSSXN section NWSSYD release subject your discretion GENSYNOP synoptic NWSSYNS synopsis NWSSYS see your service GENSYS system GENT Temperature ICAOT trace (weather reports only) NWST training GENT tropical (air mass) NWST true (bearing) GENT/R transportation request GENTA total aboard GENTA transition altitude ICAOTAC terminal area chart GENTACAN tactical air navigational aid GENTACLO tactical air command liaison officer GENTACR tactical air navigation GENTAF aerodrome forcast ICAOTAF terminal forecast METARTAIL tail wind ICAOTAND tandum GENTANDA time and attendance report GEN

TAPERtemporary appointment pending establishment of a register GEN

TAR terminal area surveillance radar ICAOTARS terminal automated radar services GENTARS Tethered Aerostat Radar System GENTAS true air speed GENTASR terminal area surveillance radar GEN

TAWOG travel arrangements without government expense GENTBJT turbojet GENTC tropical cyclone ICAOTCA terminal control area GENTCAS traffic alert and collision avoidance system GENTCH threshold crossing height GENTCHD threshold crossing height downwind GENTCHU threshold crossing height upwind GENTCNTL trans-continental GENTCOM terminal communications GENTCU towering cumulus NWSTD transmitter distributer GENTDA today GENTDEL time delay GENTDO tornado ICAOTDY temporary duty GENTDZ touchdown zone GENTDZL touchdown zone light (system) GENTECR technical reason ICAOTEL telecommunications GENTEL telephone ICAOTELAU teleautograph GENTELCO telephone company GENTELCON telephone conference GENTELEX telephone exchange GENTELRY telegraph reply GENTEMP temperature GENTEMPO temporary METARTEND trend ICAOTERPS terminal instrument procedures GENTET tetrahedron GENTF terrain following GENTFC traffic GENTFZ traffic zone GENTGL touch and go landing GENTGS taxiing guidance system ICAOTHD thunderhead NWSTHDR thunder NWSTHK thick NWSTHLD threshold GENTHN thin NWSTHRFTR thereafter GENTHRU through GENTHRUT throughout GENTHSD thousand GENTHTN threaten GENTIBA Traffic information broadcast by aircraft ICAOTIL until GENTIPS terminal information processing system GENTKOF take-off GENTLRNC tolerance GEN

TLTP too long to print GENTMA terminal control area ICAOTMPRY temporary GENTMT transmit GENTMW tomorrow GENTNA turn altitude ICAOTNDCY tendency GENTNGT tonight GENTNH turn height ICAOTNTV tentative GENTO travel order GENTOC to be continued GENTOC top of climb ICAOTOD time of delivery GENTODA take-off distance available ICAOTOG take-off gross weight GENTOP cloud top NWSTOR time of receipt GENTORA take-off run available ICAOTOT time of transmission GENTOVC top of overcast NWSTP turning point ICAOTPG topping NWSTR track ICAOTR VFR low altitude training routes GENTRA temporary reserved airspace ICAOTRACAB terminal radar approach control in tower cab GENTRACON terminal radar approach control facility GENTRAD terminal radar GENTRANS transmit or transmitter ICAOTRBL trouble GENTRCV tri-color visual approach slope indicator GENTRIB tributary NWSTRLVL transition level ICAOTRML terminal GENTRMT terminate GENTRNG training GENTRNSP transport GENTROF trough NWSTROP tropopause NWSTRPCD tropical continental (air mass) NWSTRPCL tropical NWSTRPLYR trapping layer NWSTRRN terrain GENTRSA terminal radar service area GENTRSN transition GENTRTD treated GENTS team supervisor GENTS thunderstorm METARTS transmitter station GENTSATLC Trans-Atlantic GEN

TSEC terminal secondary radar beacon GENTSFR transfer GENTSGR thunderstorm with hail METARTSGS thunderstorm with small hail METARTSMNO transmitting capability out of service GENTSMOK transmitting capability returned to service GENTSNT transient GENTSO technical standard order GENTSPAC Trans-Pacific GENTSPL thunderstorm with ice pellets METARTSRA thunderstorm with rain METARTSSA thunderstorm with duststorm or sandstorm METARTSSN thunderstorm with snow METARTSTM thunderstorm NWSTT teletypewriter GENTTS teletype switching facilities GENTTY teletypewriter station GENTURB turbulence ICAOTURBC turbulence NWSTURBT turbulent NWST-VASIS T visual approach slope indicator system ICAOTVL travel GENTVOR terminal VOR GENTWD toward GENTWEB transcribed weather broadcast GENTWI twilight GENTWR aerodrome control tower ICAOTWR tower GENTWRG towering NWSTWX teletypewriter exchange service GENTWY taxiway GENTWYL taxiway link ICAOTXT Text ICAOTYP type aircraft ICAOTYPH typhoon ICAOTYPNO teletypewriter communications out of service GENTYPOK teletypewriter communications returned to service GENU Intensity unknown (weather reports only) NWSU/S unserviceable ICAOUAC upper area control center ICAOUAG upper atmosphere geophysics NWSUAR upper air route ICAOUDDF up and down drafts NWSUDF ultra high frequency direction finding station ICAOUFA until further advised GENUFN until further notice GENUFO unidentified flying object GENUHDT unable higher due traffic ICAOUHDT unable higher due traffic ICAOUHF ultra high frequency GENUIC upper information center ICAO

UIR upper flight information region ICAOULR untra long range ICAOUN unable GENUNA unable ICAOUNAP unable to approve ICAOUNAPV unable to approve GENUNATNDD unattended GENUNAVBL unavailable GENUNDLD undelivered GENUNEC unnecessary GENUNHRD unheard GENUNID unidentified GENUNKN unknown GENUNL unlimited GENUNLGTD unlighted GENUNMON unable to monitor GENUNOFFL unofficial GENUNRDBL unreadable GENUNREL unreliable ICAOUNRELBL unreliable GENUNRSTD unrestricted GENUNSATFY unsatisfactory GENUNSBL unseasonable NWSUNSKED unscheduled GENUNSTBL unstable NWSUNSTDY unsteady NWSUNSTL unsettle NWSUNUSBL unusable GENUP unknown precipitation METARUPDFTS up drafts NWSUPDT update NWSUPR upper NWSUPSLP upslope NWSUPSTRM upstream NWSUQOT unquote GENURAUZ you are authorized GENURG urgent GENURIZR your recommendation is requested GENUSA U.S. Army GENUSAF U.S. Air Force GENUSAFIB U.S. Army Aviation Flight Information GENUSBL usable GENUSCG U.S. Coast Guard GENUSMC U.S. Marine Corps GENUSN U.S. Navy GENUSNOF United States NOTAM Office GENUSNS United States NOTAM System GENUSP urgent special observation (weather reports only) NWSUTA upper control area ICAOUTC Coordinated Universal Time GEN

UTCOK Coordinated Universal Time Coordinate Check Completed GENUVV upward vertical velocity NWSUWNDS upper winds NWSV Variable (weather reports only) NWSVA volcanic ash METARVAC visual approach chart ICAOVAC Visual approach chart (followed by name/title) ICAOVAL in valleys ICAOVAN runway control van ICAOVAPS V/STOL approach system GENVAR magnetic variation ICAOVAR visual-aural radio range ICAOVARN variation GENVASI visual approach slope indicator GENVASIS visual approach slope indicator system ICAOVASIS Visual approack slope indicator systems ICAOVC vicinity METARVCFG fog in vicinity METARVCNTY vicinity GENVDF very high frequency direction-finding station ICAOVDP visual descent point GENVER vertical ICAOVFLT visual flight GENVFR visual flight rules GENVFY verify GENVHF very high frequency GENVIA by way of GENVIP very important person ICAOVIP visual integrated presentation GENVIS visibility GENVLCTY velocity NWSVLF very low frequency GENVLNT violent NWSVLR very long range ICAOVLY valley NWSVM voice modulation GENVMC visual meteorological conditions GENVOL volume GENVOLMET meteorological information for aircraft in flight ICAOVOPR voice operated relay GENVOR VHF omni-directional radio range GENVOR/DME VOR and DME (collocated) GENVORTAC VOR and TACAN (collocated) GENVOT VOR test signal GENVOT vorticity GENVOU voucher GENVR veer NWSVR VFR military training routes GENVRB variable ICAOVRBL variable GEN

VRG visual reference gate GENVRISL Vancouver Island, BC NWSVRT MOTN vertical motion NWSVSA by visual reference to the ground ICAOVSB visible GENVSBY visibility NWSVSBYDR visibility decreasing rapidly NWSVSBYIR visibility increasing rapidly NWSVSL vessel GENVSP vertical speed ICAOVSPI visual glide path indicator GENVSTOL vertical/short take-off and landing GENVTOL vertical take-off and landing ICAOVV vertical visibility (indefinite ceiling) METARW warm (air mass) NWSW west or western longitude ICAOW white ICAOWA AIRMET NWSWAC world aeronautical chart GEN

WACWorld aeronautical chart - ICAO 1:1 000, 000(followed by name/title) ICAO

WAFC world area forcast center ICAOWAIOP will accept, if offered, the position GENWB westbound ICAOWBAR wing bar lights ICAOWBRBN will be reported by NOTAM GENWBRH Weather Bureau Regional Headquarters GENWBTS whereabouts GENWCLC watch check list completed GENWDC-1 World Data Centers in Western Europe NWSWDC-2 World Data Centers throughout rest of world NWSWDI wind direction indicator ICAOWDLY widely NWSWDSPR widespread GENWDSPRD widespread NWSWEA weather NWSWEF with effect from, or effective from ICAOWFP warm front passage NWSWG working group GENWGS-84 World geodetic system 1984 ICAOWI within GENWIBIS will be issued GENWID width ICAOWIE with immediate effect or effective immediately ICAOWILCO will comply GENWINT winter NWSWINTEM forcast upper wind and temperature for aviation ICAOWIP work in progress GENWK weak GENWKDAY weekday GENWKEND weekend GEN

WKN weaken GENWL will GENWLAV will advise GENWMO World Meteorological Organization GENWMSC Weather Message Switching Center GENWND wind NWSWNW west-north west ICAOWNWRN west-northwestern (weather reports only) NWSWNWWD west-northwestward (weather reports only) NWSWO Washington Office GENWO without GENWP waypoint GENWPLTO western plateau NWSWPM words per minute GENWPT waypoint ICAOWR wet runway NWSWRM warm NWSWRMFNT warm front NWSWRNG warning NWSWRS worse GENWS SIGMET NWSWS wind shear ICAOWSCMO Weather Service Contract Meteorological Observatory GENWSFO Weather Service Forecast Office GENWSHFT wind shift NWSWSO Weather Service Office GENWSOM weather service operations manual NWSWSR wet snow on runway NWSWSSF National Weather Service Support Facility GENWSSU National Weather Service Support Unit GENWSTCH wasatch range NWSWSW west-south west ICAOWSWRN west-southwestern (weather reports only) NWSWSWWD west-southwestward (weather reports only) NWSWT weight GENWTR water NWSWTSPT waterspout NWSWU Western Union Telegraph Company GENWV wave NWSWW severe weather forecast NWSWWW World wide web ICAOWX weather GENWXCON weather reconnaissance flight pilot report NWSWYAIO will you accept-if offered- the position of GENX Cross ICAOX obscured sky condition NWSXBAR crossbar ICAOXCP except NWSXH special handling service for aircraft GENXNG crossing ICAOXPC expect NWS

XPLOS explosive GENXREP auxiliary report GENXS atmospherics ICAOXTAL crystal GEN

XXheavy (to qualify weather phenomena- e.g. XXRA - heavy rain) ICAO

Y Yukon Standard Time (time groups only) NWSYCZ yellow caution zone (runway lighting) ICAOYD yards ICAOYDA yesterday GENYES Yes (affirmative) ICAOYKN Yukon NWSYLSTN Yellowstone NWSYMSG your message GENYMSGD your message date GENYR your ICAOZ Greenwich Mean Time GENZI zonal index NWSZI zone of interior NWSZM Z marker (VHF station location marker) GEN

ZRNOfreezing rain information not available (weather reports only) NWS