ICAO Airline Designator & Telephony
WEST ISLE AIR, INC. (ANACORTES, WA)
SCHWEITZER ENGINEERING LABORATORIES, INC.
INDIANA STATE UNIVERSITY
TRI-STATE AERO, INC. (EVANSVILLE, IL)
COURIER SERVICES, INC. (TEMPE, AZ)
SMITHAIR, INC. (ATLANTA, GA)
