The Beechcraft Super King Air family is part of a line of twin-turboprop aircraft produced by Beechcraft. The Model 200 and Model 300 series were originally marketed as the "Super King Air" family, but the "Super" was dropped in 1996. They form the King Air line together with the King Air Model 90 and 100 series.
Beechcraft currently offers the 250 (design. B200GT and the larger 350i (B300) models. The 350ER (B300CER]) is available to government, military and commercial customers for special mission operations such as aerial survey, air ambulance, flight inspection and surveillance. The Beechcraft 1900 regional airliner was derived from the Model B200 King Air.
The Super King Air family has been in continuous production since 1974,[ the longest production run of any civilian turboprop aircraft in its class. It outlasted all of its previous competitors; the only other pressurized multi engine turboprop utility aircraft now in production is the Piaggio P.180 Avanti.