Beech C-45G Expeditor

The Beech C-45 Expeditor is one of several aircraft based on the Model 18 Twin Beech. Beech manufactured over 5,000 aircraft during World War II for the U.S. and several foreign governments. Other variants of this aircraft were the AT-11 Kansan bombardier and gunnery trainer, the AT-7 Navigator navigation trainer, and the Navy's SNB-1 and SNB-2 trainers and JRB utility transport.

The C-45 earned the nickname "Bug Smasher" and served as a small transport/liaison aircraft. The aircraft on display at Castle Air Museum served with the Navy at the San Diego Naval Air Station. In 1951 it was part of a program to rebuild AT-7/AT-11/SNB aircraft to C-45 configuration. After military service, it was used as a civilian aircraft by the Department of Agriculture.