Beechcraft D18/RC-45J 1.5m PNPE flite Beechcraft D18 RC 45J 1. 5m RC Airplane Introduction The design of the Twin Beech D18 proved so adaptable that Beechcraft Aircraft Corporation eventually produced 32 versions and more than 9,000 total aircraft from 1937 to 1969. They served in a wide variety of roles, from passenger transport to mail carrier, and even as a military trainer for navigators and bombardiers. The original E flite Beechcraft D18 1. 5m quickly became known as the