Two Beech C-45 Expeditors

The Beechcraft Model 18, or "Twin Beech", as it was better known, is a 6-11 place, twin-engine, low-wing, conventional-gear aircraft that was manufactured by the Beech Aircraft Corporation of Wichita, Kansas. This model saw service during and after World War II in a number of versions including the United States Army Air Forces C-45 Expeditor, AT-7 Navigator, AT-11 Kansan, and for the United States Navy, UC-45J Navigator and the SNB-1 Kansan. An estimated aggregate total time in service for the aircraft time is in excess of 20,000,000 hours of flight time.

The Beech 18 is the most modified US-certified aircraft design, with over 200 FAA approved Supplemental Type Certificates on record for the aircraft.