ICAO Airline Designator & Telephony
MARTIN COMPANIES (KILGORE, TX)
CENTRAL AIR SOUTHWEST, INC. (CUSHING, OK)
CASTLE AVIATION, INC. (RAVENNA, OH)
AIRSHOWS AMERICA THE PATRIOTS (BYRON, CA)
DELTA AIR LINES, INC.
AIR AURORA, INC. (SUGAR GROVE, IL)
