The lookup desk
Three things worth having open beside the notes
Operators and their spoken callsigns, abbreviations the course has taught and many it has not, and location indicators. Reference material, kept out of the lesson notes on purpose. The site search reaches in here too.
Screen only. The three tables are not printed: on paper they run to hundreds of pages, and they are a thing to search rather than to read.
Country
323 of 323 operators
Nordic & Baltic37
APF“Amapola”PopulAir, formerly Amapola FlygSwedenCargo
ART“Smart Lynx”SmartLynx AirlinesLatviaLeisure & charter
BBD“Blue Cargo”Bluebird NordicIcelandCargo
BLX“Bluescan”TUI fly NordicSwedenLeisure & charter
BRX“Braathens”Braathens Regional Airways, formerly Golden Air; flies for BRA Braathens Regional AirlinesSwedenRegional
BTI“Airbaltic”airBalticLatviaMainline
DOP“Dancopter”DancopterDenmarkBusiness, helicopter & state
DTR“Danish”Danish Air TransportDenmarkRegional
ELL“Estonian”Estonian AirEstoniaNo longer flying
EST“Reval”Regional Jet, trading as Xfly; stopped flying November 2024EstoniaNo longer flying
FCM“Finncomm”Norra, Nordic Regional AirlinesFinlandRegional
FIN“Finnair”FinnairFinlandMainline
FLI“Faroeline”Atlantic AirwaysFaroe IslandsMainline
FPY“Player”PLAY (Fly Play); stopped flying 29 September 2025IcelandNo longer flying
GJT“Getjet”GetJet AirlinesLithuaniaLeisure & charter
GRL“Greenland”Air GreenlandGreenlandMainline
HKS“Helibus”CHC Helikopter ServiceNorwayBusiness, helicopter & state
ICE“Iceair”IcelandairIcelandMainline
JTD“Jettime”JettimeDenmarkLeisure & charter
KBV“Swecoast”Swedish Coast GuardSwedenBusiness, helicopter & state
LIL“Lithuania Air”Lithuanian Airlines, later FlyLalLithuaniaNo longer flying
LTR“Lufttransport”LufttransportNorwayBusiness, helicopter & state
NAX“Nor Shuttle”Norwegian Air Shuttle, designator retired 31 October 2021, now NOZNorwayDesignator retired
NBT“Longship”Norse Atlantic AirwaysNorwayMainline
NDA“Nordica Air”Nordica; stopped flying November 2024EstoniaNo longer flying
NOR“Norske”Norsk Helikopter, now Bristow Norway, which files as BHLNorwayDesignator retired
NOZ“Nordic”Norwegian Air ShuttleNorwayLow cost
NSW“Nordic”Norwegian Air Sweden, designator retired 31 October 2021, now NSZSwedenDesignator retired
NSZ“Rednose”Norwegian Air SwedenSwedenLow cost
NVD“Nordvind”Avion ExpressLithuaniaLeisure & charter
SAS“Scandinavian”Scandinavian AirlinesSweden / Denmark / NorwayMainline
SCW“Scanwing”Malmö Aviation, later Braathens RegionalSwedenRegional
SRR“Whitestar”Maersk Air Cargo, formerly Star AirDenmarkCargo
SUS“Sunscan”Sun-Air of ScandinaviaDenmarkRegional
SVF“Swedeforce”Swedish Armed ForcesSwedenBusiness, helicopter & state
SWN“Air Sweden”West Atlantic SwedenSwedenCargo
WIF“Wideroe”WiderøeNorwayRegional
Rest of Europe105
ABB“Air Belgium”Air BelgiumBelgiumCargo
ABR“Contract”ASL Airlines IrelandIrelandCargo
ADR“Adria”Adria AirwaysSloveniaNo longer flying
AEA“Europa”Air EuropaSpainMainline
AEE“Aegean”Aegean AirlinesGreeceMainline
AFL“Aeroflot”AeroflotRussiaMainline
AFR“Airfrans”Air FranceFranceMainline
AMC“Air Malta”Air MaltaMaltaNo longer flying
ANE“Air Nostrum”Air NostrumSpainRegional
ASL“Air Serbia”Air SerbiaSerbiaMainline
AUA“Austrian”Austrian AirlinesAustriaMainline
AUI“Ukraine International”Ukraine International AirlinesUkraineMainline
AUR“Ayline”Aurigny Air ServicesUnited KingdomRegional
AWC“Zap”Titan AirwaysUnited KingdomLeisure & charter
AZA“Alitalia”AlitaliaItalyNo longer flying
BAW“Speedbird”British AirwaysUnited KingdomMainline
BCI“Blue Island”Blue IslandsUnited KingdomRegional
BCS“Postman”European Air Transport Leipzig (DHL)GermanyCargo
BEE“Jersey”FlybeUnited KingdomNo longer flying
BEL“Beeline”Brussels AirlinesBelgiumMainline
BER“Air Berlin”Air BerlinGermanyNo longer flying
BGH“Balkan Holidays”BH AirBulgariaLeisure & charter
BHL“Bristow”Bristow Helicopters, including Bristow NorwayUnited KingdomBusiness, helicopter & state
BOX“German Cargo”AeroLogicGermanyCargo
BRU“Belarus Avia”BelaviaBelarusMainline
CAI“Corendon”Corendon AirlinesTürkiyeLeisure & charter
CCM“Corsica”Air CorsicaFranceRegional
CFE“Flyer”BA CityFlyerUnited KingdomRegional
CFG“Condor”CondorGermanyLeisure & charter
CLH“Hansaline”Lufthansa CityLineGermanyRegional
CLX“Cargolux”Cargolux Airlines InternationalLuxembourgCargo
CND“Dutch Corendon”Corendon Dutch AirlinesNetherlandsLeisure & charter
CRL“Corsair”Corsair InternationalFranceMainline
CSA“CSA-Lines”Czech AirlinesCzech RepublicNo longer flying
CTM“Cotam”French Air ForceFranceBusiness, helicopter & state
CTN“Croatia”Croatia AirlinesCroatiaMainline
CYP“Cyprus”Cyprus AirwaysCyprusMainline
DHK“World Express”DHL Air UKUnited KingdomCargo
DLA“Dolomiti”Air DolomitiItalyRegional
DLH“Lufthansa”LufthansaGermanyMainline
EDW“Edelweiss”Edelweiss AirSwitzerlandLeisure & charter
EIN“Shamrock”Aer LingusIrelandMainline
EJU“Alpine”easyJet EuropeAustriaLow cost
ENT“Enter”Enter AirPolandLeisure & charter
EWG“Eurowings”EurowingsGermanyLow cost
EXS“Channex”Jet2United KingdomLow cost
EZE“Eastflight”Eastern AirwaysUnited KingdomRegional
EZS“Topswiss”easyJet SwitzerlandSwitzerlandLow cost
EZY“Easy”easyJetUnited KingdomLow cost
FHY“Freebird Air”Freebird AirlinesTürkiyeLeisure & charter
FWI“French West”Air CaraïbesFranceMainline
GAF“German Air Force”German Air ForceGermanyBusiness, helicopter & state
GEC“Lufthansa Cargo”Lufthansa CargoGermanyCargo
HOP“Air Hop”Air France HopFranceRegional
IBB“Binter”Binter CanariasSpainRegional
IBE“Iberia”IberiaSpainMainline
IBS“Iberexpres”Iberia ExpressSpainLow cost
ICV“Cargo Med”Cargolux ItaliaItalyCargo
ITY“Itarrow”ITA AirwaysItalyMainline
JAF“Beauty”TUI fly BelgiumBelgiumLeisure & charter
KLC“City”KLM CityhopperNetherlandsRegional
KLM“KLM”KLM Royal Dutch AirlinesNetherlandsMainline
LGL“Luxair”LuxairLuxembourgMainline
LOG“Logan”LoganairUnited KingdomRegional
LOT“Pollot”LOT Polish AirlinesPolandMainline
LZB“Flying Bulgaria”Bulgaria AirBulgariaMainline
MON“Monarch”Monarch AirlinesUnited KingdomNo longer flying
MPH“Martinair”Martinair CargoNetherlandsCargo
NAF“Netherlands Air Force”Royal Netherlands Air ForceNetherlandsBusiness, helicopter & state
NJE“Fraction”NetJets EuropePortugalBusiness, helicopter & state
NOS“Moonflower”NeosItalyLeisure & charter
NPT“Neptune”West Atlantic UK, formerly Atlantic AirlinesUnited KingdomCargo
OAL“Olympic”Olympic AirGreeceRegional
OAW“Helvetic”Helvetic AirwaysSwitzerlandRegional
OCN“Ocean”Discover AirlinesGermanyLeisure & charter
PBD“Pobeda”PobedaRussiaLow cost
PGT“Sunturk”Pegasus AirlinesTürkiyeLow cost
ROT“Tarom”TAROMRomaniaMainline
RRR“Ascot”Royal Air ForceUnited KingdomBusiness, helicopter & state
RYR“Ryanair”RyanairIrelandLow cost
RYS“Magic Sun”BuzzPolandLow cost
RZO“Air Azores”Azores AirlinesPortugalMainline
SBI“Siberian Airlines”S7 AirlinesRussiaMainline
SDM“Rossiya”Rossiya AirlinesRussiaMainline
SHT“Shuttle”British Airways ShuttleUnited KingdomMainline
SVR“Sverdlovsk Air”Ural AirlinesRussiaMainline
SWR“Swiss”Swiss International Air LinesSwitzerlandMainline
SWT“Swift”SwiftairSpainCargo
SXS“Sunexpress”SunExpressTürkiyeLeisure & charter
TAP“Air Portugal”TAP Air PortugalPortugalMainline
TAY“Quality”ASL Airlines BelgiumBelgiumCargo
TCX“Kestrel”Thomas Cook AirlinesUnited KingdomNo longer flying
TFL“Orange”TUI fly NetherlandsNetherlandsLeisure & charter
THY“Turkish”Turkish AirlinesTürkiyeMainline
TOM“Tomjet”TUI AirwaysUnited KingdomLeisure & charter
TRA“Transavia”TransaviaNetherlandsLow cost
TVF“France Soleil”Transavia FranceFranceLow cost
TVS“Skytravel”SmartwingsCzech RepublicLeisure & charter
UTA“Utair”UtairRussiaMainline
VIR“Virgin”Virgin AtlanticUnited KingdomMainline
VJT“Vista Malta”VistaJet MaltaMaltaBusiness, helicopter & state
VLG“Vueling”VuelingSpainLow cost
VOE“Volotea”VoloteaSpainLow cost
WUK“Wizz Go”Wizz Air UKUnited KingdomLow cost
WZZ“Wizz Air”Wizz AirHungaryLow cost
North America47
AAL“American”American AirlinesUnited StatesMainline
AAY“Allegiant”Allegiant AirUnited StatesLow cost
ABX“Abex”ABX AirUnited StatesCargo
ACA“Air Canada”Air CanadaCanadaMainline
AJT“Amerijet”Amerijet InternationalUnited StatesCargo
AMX“Aeromexico”AeroméxicoMexicoMainline
ASA“Alaska”Alaska AirlinesUnited StatesMainline
ASH“Air Shuttle”Mesa AirlinesUnited StatesRegional
ICAO three-letter designators and the telephony designators spoken on frequency, from ICAO Doc 8585. A first pass, not the whole register: check anything you rely on operationally.