ICAO Airline Designator & Telephony
OPERATIONAL SUPPORT AIRLIFT COMMAND (OSACOM) (FORT BELVOIR, VA)
COLUMBIA HELICOPTERS, INC. (LAKE CHARLES, LA)
SYSTEC 2000, INC (WATERFORD, MI)
PALLAS AVIATION
SOUTHERN SEAPLANE, INC. (BELLE CHASSE, LA)
TANANA AIR SERVICES (TANANA, AK)
