The Beechcraft D-18 also known as the “Twin Beech” is a twin engine, low wing, tailwheel aircraft that could carry 6-11 passengers built by Beech Aircraft Corporation of Wichita, Kansas.
This aircraft was produced from 1937 to November 1969, a period of 32 years. There were over 9,000 built making it one of the worlds’ most widely used light aircraft. It had many uses cargo, passenger, VIP aircraft and many uses in the military as transport.
During and after World War Ii it was used by the military besides being a great transport, navigational trainer, bombing trainer, gunnery training, photo recon, drone target puller. The aircraft identifiers when used by the United States Army air Force (USAAF) were C-45 Expeditor, AT-7 Navigator, UC-45 Navigator and with United States Navy (USN) SNB-1 and SNB-2.
In the early pre- WWII days, it was the pre-eminent “business aircraft” and “feeder airliner”. Later it was used in civil purposes as: aerial spraying, sterile insect release, aerial firefighting, air mail delivery, air ambulance, movie productions, skydiving, freight hauling, weapon/drug smuggling (when the smugglers got caught, an aircraft auction occurred) the D-18 was also a skywriter and banner towing.
Many Beech D18s are privately own in the world with 240 registered with the United States Federal Aviation Administration.
On a personal note: I got my first twin-engine time as a young pilot, flying the D-18 on FAA radar testing station in Fontana CA. It was quite a thrill.