As of February 2015.

ISO8859-15 encoding:

http://occurs.lineum.org.uk/public/misc/aviation/ICAO_Operating_Agency_Designators.csv.gz

UTF-8 encoding:

http://occurs.lineum.org.uk/public/misc/aviation/ICAO_Operating_Agency_Designators.csv.gz

Columns are RADIO-TELEPHONY IDENTIFIER, OPERATING AGENCY, COUNTRY, FLIGHTPLAN DESIGNATOR . No header row.

Example:


BUZZARD,BUTANE BUZZARD AVIATION CORPORATION,UNITED KINGDOM,BZZ
BYGONE,BYGONE AVIATION LLC (GUYMON OK),UNITED STATES,BYG
BYLINA,BYLINA JOINT-STOCK COMPANY,RUSSIAN FEDERATION,BYL
CABAIR LONDON,CABAIR HELICOPTERS LTD,UNITED KINGDOM,...
CABI,CABI,UKRAINE,CBI
CABOAEREO,AEREO CABO S.A. DE C.V.,MEXICO,CBV
CABORCA,TAXIS AEREOS DE CABORCA S.A. DE C.V.,MEXICO,TXB