The aircraft was designed to carry passengers in all weather conditions from airports with relatively short runways. It is capable of flying in excess of 600 miles (970 km), although few operators use its full-fuel range. In terms of the number of aircraft built and its continued use by many passenger airlines and other users, it is one of the most popular 19-passenger airliners in history.

While the 1900C had become a popular regional airliner, Beechcraft undertook a substantial redesign of the aircraft, and in 1991 introduced a new version called the 1900D.

The 1900 and 1900C, like most 19-passenger airliners and small business jets, have fairly small passenger cabins, with ceilings so low that passengers cannot walk through the interior without bending forward. The 1900D was designed to remedy this by providing a “stand-up cabin”, which would allow most passengers to walk upright. It is one of only two 19-seat airliners with this feature, the other being the British Aerospace Jetstream 31/32.

Because the taller passenger cabin adds both weight and drag to the airplane, other elements of the 1900D were also changed. More powerful engines and modified propellers were installed, winglets were added to reduce drag and increase the wings’ efficiency, and the tail was made larger in response to the more powerful engines. The cockpit was updated with an Electronic Flight Instrument System (EFIS). The 1900D was certified under the then-new FAR Part 23 “Commuter Category” standards, which had replaced the earlier SFAR 41C. Since the UD serial numbers were already in use by the military 1900s, the 1900D airplanes have serial numbers beginning with UE. The 1900D is the most popular version of the airliner, with 439 of the 1900D built.

The B1900D can be used as a small cargo aircraft if seats are removed, and cargo loaded via the large rear door.

Aircraft of similar capability, configuration and era: Antonov An-38, British Aerospace Jetstream 31, de Havilland Canada DHC-6 Twin Otter, Dornier Do 228, Embraer EMB 110 Bandeirante, Fairchild Swearingen Metroliner, Harbin Y-12, Let L-410 Turbolet.