ASPORAC (RAD/RIAD)...
Back in 1999 a friend and I decided to change the airline descriptors to more appropriate codes. We called it ASPORAC but I don't recall what it meant. RAD (Revised Airline Descriptors) and RIAD (Revised International Airline Descriptors) were other possibilities.
| New code | Airline and Internet address | Country | IATA code | ICAO code | Notes |
| ADR | Adria Airways | Slovenia | JP | ADR | + |
| AER | Aer Lingus | Republic of Ireland | EI | EIN | R |
| ARI | Aeroflot Russian International Airlines |
Russian Federation | SU | AFL | |
| ARG | Aerolineas Argentinas | Argentina | AR | ARG | + |
| ARL | Aero Lloyd | Germany | YP | AEF | |
| AMX | Aeromexico | Mexico | AM | AMX | + |
| A2K | Air 2000 | United Kingdom | DP | AMM | |
| AAF | Air Afrique | Ivory Coast | RK | RKA | |
| ALG | Air Algérie | Algeria | AH | DAH | |
| AXP | Airborne Express | United States | GB | ABX | C |
| ACA | Air Canada | Canada | AC | ACA | + |
| ACH | Air China | China | CA | CCA | |
| AFR | Air France | France | AF | AFR | + |
| AIN | Air India | India | AI | AIC | |
| AJM | Air Jamaica | Jamaica | JM | AJM | + |
| ALK | AirLanka | Sri Lanka | UL | ALK | + |
| LIB | Air Liberté | France | VD | LIB | + |
| MLT | Air Malta | Malta | KM | AMC | |
| ANZ | Air New Zealand | New Zealand | NZ | ANZ | + |
| ATI | Airtours International | United Kingdom | VZ | AIH | |
| ATS | Air Transat | Canada | TS | TSC | |
| AUK | Air UK | United Kingdom | UK | UKA | |
| AZB | Air Zimbabwe | Zimbabwe | UM | AZW | |
| ALS | Alaska Airlines | United States | AS | ASA | |
| ALI | Alitalia | Italy | AZ | AZA | |
| ANA | All Nippon Airways | Japan | NH | ANA | + |
| AMR | American Airlines | United States | AA | AAL | |
| ATA | American Trans Air | United States | TZ | AMT | |
| AWA | America West Airlines | United States | HP | AWE | |
| ANS | Ansett Australia | Australia | AN | AAA | |
| ASN | Asiana Airlines | South Korea | OZ | AAR | |
| ATL | Atlas Air | United States | 5Y | GTI | C |
| AUS | Austrian Airlines | Austria | OS | AUA | |
| BLK | Balkan Bulgarian Airlines | Bulgaria | LZ | LAZ | |
| BMN | Biman Bangladesh Airlines | Bangladesh | BG | BBC | |
| BRA | Braathens SAFE | Norway | BU | BRA | + |
| BR | Britannia Airways | United Kingdom | BY | BAL | |
| BAW | British Airways | United Kingdom | BA | BAW | + |
| BMA | British Midland Airways | United Kingdom | BD | BMA | + |
| BWI | BWIA International | Trinidad and Tobago | BW | BWA | |
| CAN | Canadian Airlines | Canada | CP | CDN | |
| CGL | Cargolux | Grand Duchy of Luxembourg | CV | CLX | C |
| CPA | Cathay Pacific Airways | China | CX | CPA | + |
| CHN | China Airlines | Taiwan | CI | CAL | |
| CDR | Condor | Germany | DE | CFG | |
| CON | Continental Airlines | United States | CO | COA | |
| CRO | Croatia Airlines | Croatia | OU | CTN | |
| CSA | Czech Airlines | Czech Republic | OK | CSA | + |
| CUB | Cubana | Cuba | CU | CUB | + |
| CYP | Cyprus Airways | Cyprus | CY | CYP | + |
| DAL | Delta Air Lines | United States | DL | DAL | + |
| DHL | DHL Worldwide Express | United States | ER | DHL | C + |
| EGY | Egyptair | Egypt | MS | MSR | |
| EAI | EL AL Israel Airlines | Israel | LY | EIA | |
| EWW | Emery Worldwide | United States | EB | EWW | C + |
| EMR | Emirates | United Arab Emirates | EK | UAE | |
| EST | Estonian Air | Estonia | OV | ELL | |
| ETH | Ethiopian Airlines | Ethiopia | ET | ETH | + |
| ERW | Eurowings | Germany | EW | EWG | |
| EVA | Eva Airways | Taiwan | BR | EVA | + |
| EIA | Evergreen International | United States | EZ | EIA | C |
| FDX | FedEx | United States | FM | FDX | + |
| FIN | Finnair | Finland | AY | FIN | + |
| GRD | Garuda Indonesia | Indonesia | GA | GIA | |
| GLF | Gulf Air | Bahrain | GF | GFA | |
| HPG | Hapag-Lloyd | Germany | HF | HLF | |
| HVL | HeavyLift | United Kingdom | NP | HLA | C |
| IBE | Iberia | Spain | IB | IBE | + |
| ICE | Icelandair | Iceland | FI | ICE | + |
| IND | Indian Airlines | India | IC | IAC | |
| IRN | Iran Air | Iran | IR | IRA | |
| JAL | Japan Airlines | Japan | JL | JAL | + |
| KLM | KLM Royal Dutch Airlines | Netherlands | KL | KLM | + |
| KAL | Korean Air | South Korea | KE | KAL | + |
| KWT | Kuwait Airways | Kuwait | KU | KAC | |
| LAN | LAN Chile | Chile | LA | LAN | + |
| LDA | Lauda Air | Austria | NG | LDA | + |
| LIT | Lithuanian Airlines | Lithuania | TE | LIL | |
| LOT | LOT Polish Airlines | Poland | LO | LOT | + |
| LTU | LTU International Airways | Germany | LT | LTU | + |
| LHS | Lufthansa | Germany | LH | DLH | |
| LUX | Luxair | Grand Duchy of Luxembourg | LG | LGI | |
| MAL | Malaysia Airlines | Malaysia | MH | MAS | |
| MLV | Malév Hungarian | Hungary | MA | MAH | |
| MAR | Martinair Holland | Netherlands | MA | MAH | |
| MEX | Mexicana | Mexico | MX | AMX | |
| MEA | Middle East Airlines | Lebanon | ME | MEA | + |
| MON | Monarch Airlines | United Kingdom | ZB | MON | + |
| NIG | Nigeria Airways | Nigeria | WT | NGA | |
| NWA | Northwest Airlines | United States | NW | NWA | + |
| OAW | Olympic Airways | Greece | OA | OAL | |
| PIA | Pakistan International Airlines | Pakistan | PK | PIA | + |
| PHI | Philippine Airlines | Philippines | PR | PAL | |
| QAN | QANTAS Airways | Australia | QF | QFA | R |
| RAM | Royal Air Maroc | Morocco | AT | RAM | + |
| RJA | Royal Jordanian Airlines | Jordan | RJ | RJA | + |
| RYN | Ryanair | Ireland | RY | RYR | |
| SAB | SABENA | Belgium | SN | SAB | + |
| SAS | SAS Scandinavian Airlines System | Sweden | SK | SAS | + |
| SDA | Saudia | Saudi Arabia | SV | SVA | |
| SIA | Singapore Airlines | Singapore | SQ | SIA | + |
| SAA | South African Airways | South Africa | SA | SAA | + |
| SWA | Southwest Airlines | United States | WN | SAL | |
| SWS | Swissair | Switzerland | SR | SWR | |
| SYR | Syrianair | Syria | RB | SYR | + |
| TAP | TAP Air Portugal | Portugal | TP | TAP | + |
| TRM | Tarom Romanian | Romania | RO | ROT | |
| TAI | Thai International | Thailand | TG | THA | |
| TWA | Trans World Airlines | United States | TW | TWA | + |
| TNS | Tunisair | Tunisia | TU | TAR | |
| TRK | Turkish Airlines | Turkey | TK | THY | |
| UAL | United Airlines | United States | UA | UAL | + |
| UPS | United Parcel Service | United States | 5X | UPS | C + |
| USA | US Airways | United States | US | USA | + |
| VRG | VARIG | Brazil | RG | VRG | + |
| VSP | VASP | Brazil | VP | VSP | + |
| VAA | Virgin Atlantic Airways | United Kingdom | VS | VAA | R |
| Major Airline | New code | Regional Airline | Region | Former code(s) |
| AER | ALC | Aer Lingus Commuter | Republic of Ireland | |
| ARG | ALA | Austral Lineas Aereas | Argentina | AU |
| AMX | AXP | Aeromexpress | Mexico | QO |
| A2K | C3K | Canada 3000 Airlines | Charters from Canada | 2T |
| AAF | ABK | Air Burkina | Burkina Faso | VH |
| AAF | AML | Air Mali | Mali | L9 |
| AAF | AMT | Air Mauritanie | Mauritania | MR |
| ACA* | ABC | Air BC | Western Canada | ZX |
| ACA* | ANV | Air Nova | Eeastern Canada | QK |
| ACA* | AON | Air Ontario | Ontario | GX |
| ACA* | NWT | NWT Air | Northern Canada | NV |
| AFR | ACT | Air Charter | Charters from Paris | SF |
| AJM | AJE | Air Jamaica Express | Jamaica | |
| LIB | NVL | Nouvelair Tunisie | Tunisia | BJ |
| MLT | MAC | Malta Air Charter | Malta | |
| ANZ* | ANL | Air Nelson | North Island | NZ |
| ANZ* | EGL | Eagle Air | New Zealand | NZ |
| ANZ* | MCA | Mount Cook Airlines | North and South Island | NM |
| AUK | LIA | Leisure International Airways | Europe | |
| ALS | HRZ | Horizon Air | United States Pacific Northwest | QX |
| ALS* | ERA | ERA Aviation | Alaska | 7H |
| ALS* | LAB | LAB Flying Service | Alaska | JF |
| ALS* | PEN | Peninsula Airways (Penair) | Alaska | KS |
| ALI | AVI | Avianova | Italy and Europe | RD |
| ALI | EFL | EuroFly | Charters from Milan | EEZ |
| ALI | AEU | Air Europe | Charters from Milan | PE |
| ANA | ANP | Air Nippon | Japan | |
| AMR* | EXC | Executive Airlines | Caribbean | NA |
| AMR* | WWA | Wings West Airlines | Southwest United States | RM |
| AMR* | FLG | Flagship Airlines | United States East Coast | 8N |
| AMR* | SIM | Simmons Airlines | United States Midwest | MQ |
| AWA* | MWA | Mountain West Airlines [AWA* and UAL*] |
Southwest United States | HP |
| AWA* | DSA | Desert Sun Airlines | Southwest United States | HP |
| ANS | ANZ | Ansett New Zealand | New Zealand | ZQ |
| ANS | SWA | Skywest Airlines | Western Australia | YT |
| ANS | KEN | Kendell Airlines | Southeast Australia | KD |
| ANS | AAS | Aeropelican Air Services | Southeast Australia | PO |
| AUS | AAT | Austrian Airtransport | Charters | AAT |
| AUS | TYR | Tyrolean Airways | Europe | VO |
| BAW | DBA | Deutsche BA | Germany | DI |
| BAW | TAT | TAT European Airlines | France and Europe | IJ |
| BAW* | BRY | Brymon Airways | United Kingdom | BA |
| BAW* | CFE | City Flyer Express | United Kingdom and Europe | FD |
| BAW* | GBA | GB Airways | North Africa | GT |
| BAW* | LOG | Loganair | Scotland | LC |
| BAW* | MRS | Maersk Air | Europe | VB |
| BAW* | MAE | Manx Airlines Europe | United Kingdom and Europe | JE |
| BAW | SUN | Sun-Air | Scandinavia | |
| BAW | COM | Comair | South Africa | |
| BMA | MNX | Manx Airlines | United Kingdom | JE |
| BWI | LIA | LIAT | Caribbean and Venezuela | LI |
| CAN | CRA | Canadian Regional Airlines | Canada and United States | |
| CAN | CAI | Calm Air International | Central Canada | |
| CAN | ALM | Air Alma | Quebec province | |
| CAN | INT | Inter-Canadien | Eastern Canada | |
| CAN | CNO | Canadian North | Northern Canada | |
| CPA | DGN | Dragonair | China | KA |
| CHN | MAN | Mandarin Airlines | Oceania and Vancouver | AE |
| CHN | FEA | Far Eastern Air Transport | China | EF |
| CON | CXP | Continental Express | United States | CO |
| CON | CMI | Continental Micronesia | United States Trust Territory | CS |
| CYP | ECA | Eurocypria Airlines | European charters from Cyprus | UI |
| DAL* | ASA | Atlantic Southeast Airlines | Southeast United States | EV |
| DAL* | BXP | Business Express | Northeast United States | HQ |
| DAL* | COM | Comair | Eastern United States | OH |
| DAL* | SWA | Skywest Airlines | Southwest United States | OO |
| EGY | SHO | Shorouk Air [maybe defunct] | Charters from Egypt | 7Q |
| EAI | SOI | Sun d’Or International Airlines | Charters from Israel | ERO |
| EAI | NAA | North American Airlines | United States | XG |
| EVA | MAK | Makung Airlines | Taiwan | B7 |
| EVA | GCA | Great China Airlines | Taiwan | IF |
| EVA | TWN | Taiwan Airlines [EVA intends to acquire it] | Taiwan | WG |
| FIN | FAV | Finnaviation | Finland | FA |
| FIN | KAR | Karair | Finland | KR |
| GRD | MNA | Merpati Nusantara Airlines | Indonesia | MZ |
| IBE | BCA | Binter Canarias | Canary Islands | NT |
| IBE | BME | Binter Mediterraneo | Mediterranean | AX |
| IBE | VVA | Viva Air | Charters from Palma de Mallorca | FV |
| IBE | AVC | Aviaco | Spain | AO |
| IRN | IAT | Iran Air Tours | Charters | IRB |
| JAL | JAA | Japan Asia Airways | Japan, Taipei and Hong Kong | EG |
| JAL | JAC | Japan Air Charter | Japan and Hawaii | JZ/JAC |
| KLM | CTH | KLM Cityhopper | Europe | HN |
| KLM | TRA | Transavia Airlines | Spain | |
| KLM | ALM | ALM Antillean Airlines | Netherlands Antilles | |
| KLM | KEH | KLM Era Helicopters | North Sea | |
| LAN | LDC | Ladeco Airlines | Chile | UC |
| LDA | LAS | Lauda Air SpA | Milan and Caribbean | |
| LTU | LSI | LTU Süd International Airways | Charters from Munich | LTS |
| LTU | LTE | LTE International Airways | Europe and Canary Islands | XO |
| LHS | CTL | Lufthansa Cityline | Germany and Europe | CL |
| LHS | CON | Contact Air | Germany | 3T |
| LHS | SXP | Sunexpress [LHS and TRK] | Turkey | XQ |
| LUX | LXC | Luxair Commuter | Luxembourg | |
| MAL | RAC | Royal Air Cambodge | Cambodia | VJ |
| MAL | PEL | Pelangi Air | Malaysia | 9P |
| MAL | AMD | Air Maldives | Maldives | L6 |
| MEX | CRB | Aerocaribe | Mexico | QA |
| MEX | CZM | Aerocozumel | Mexico | AZ |
| NWA | XPA | Express Airlines | Central United States | II |
| NWA | BXP | Business Express [DAL*] | Northeast United States | HQ |
| NWA | HRZ | Horizon Air [owned by ALS] | United States Pacific Northwest | QX |
| NWA | MES | Mesaba Airlines | Northcentral United States | XJ |
| OAW | OAV | Olympic Aviation | Greece | 7U |
| OAW | MAC | Macedonian Airlines | Charters | M7 |
| QAN | AAA | Australia-Asia Airlines | Taiwan | |
| QAN | AXP | Australianair Express | ||
| QAN | ALK | Airlink | Northeast Australia | |
| QAN | EAA | Eastern Australia Airlines | Eastern Australia | |
| QAN | SAA | Southern Australia Airlines | Southern Australia | |
| RJA | ARW | Arab Wings | Middle East | |
| RJA | RYW | Royal Wings | Middle East | |
| RYN | RUK | Ryanair UK | United Kingdom and Europe | |
| SAB | SOB | Sobelair | Charters | S3 |
| SAB | DAT | Delta Air Transport | Europe | DAT |
| SAS | GLA | Greenlandair (Gröenlandsfly) | Greenland | GL |
| SAS | SPN | Spanair | Spain | JK |
| SAS | COM | SAS Commuter | Scandinavia | |
| SIA | SLK | SilkAir | Southeast Asia | MI |
| SAA | ALI | Alliance Airlines | Africa and Europe | Y2 |
| SAA | SXP | SA Express | Southern Africa | YB |
| SAA | ALA | SA Airlink (Airlink Airlines) | South Africa | |
| SWS | CRS | Crossair | Europe | LX |
| TAP | AMC | Air Macau | Macau | NX |
| TPA | AST | Air São Tomé e Principe | Eastern Africa | GJ |
| TWA* | TSA | Trans States Airlines | United States | 9N |
| TNS | TIN | Tuninter | Tunisia | UG |
| TNS | TAV | Tunisavia | Tunisia | TT |
| TRK | KTA | Kibris Turkish Airlines (Kibris Turk Hava Yollari) | Turkey and London | YK |
| TRK | SXP | Sunexpress [TRK and LHS] | Turkey | XQ |
| UAL* | AWS | Air Wisconsin | Northern United States | UA |
| UAL* | ACA | Atlantic Coast Airlines | United States East Coast | DH |
| UAL* | GLA | Great Lakes Aviation | Northcentral United States | ZK |
| UAL* | MWA | Mountain West Airlines [UAL* and AWA*] | Southwest United States | UA |
| UAL* | WST | WestAir | United States West Coast | OE |
| USA | USS | USAir Shuttle | Northeast United States | TB |
| USA* | ALL | Allegheny Commuter | Pennsylvania | US |
| USA* | CCA | CCAir | Southeast United States | ED |
| USA* | CHA | Chautauqua Airlines | Northeast United States | US |
| USA* | COM | Commutair | Northeast United States | US |
| USA* | PIA | Paradise Island Airlines | Florida | BK |
| USA* | PSA | PSA Airlines | US | |
| USA* | PMA | Piedmont Airlines | Eastern North America | PI |
| USA* | LXP | Liberty Express | Northeast United States | US |
| USA* | AMW | Air Midwest | United States Midwest | ZV |
| USA* | FGA | Florida Gulf Airlines | Florida | |
| VRG | RSA | Rio-Sul Serviços Aéreos Regionais SA | Southern states of Brazil | SL |
| VRG | NLA | Nordeste Linhas Aéreas Regionais | Northern Brazil | JH |