The Beechcraft King Air series has its roots in the 1951 Twin Bonanza. That aircraft model was enlarged and re-engined to become the Model 65 Queen Air. The Queen Air design changed to incorporate a swept tail and pressurization. With the addition of Pratt & Whitney turboprop engines, the Queen Air became the Model 90 King Air. The King Air 90 led to the stretched King Air 100, which in turn had a T-Tail added to become the King Air 200. Increased gross weights and more powerful engines made the King Air 200 into a King Air 300. A stretch to the fuselage added more room and the 300 became the King Air 350 with 350ER released in 2007 and 350i in 2009.
The Beechcraft 350 model variants are utilised worldwide by government, military, air ambulance, charter, RPT and special mission operations such as aerial survey, flight inspection and surveillance.
The 350i has a range of 1,530 nm (2,833 km), speed of 310 kts (574 kmph), a maximum operating altitude of 35,000 ft, MTOW 15,000 lb (6,803 kg), Collins Proline 21 avionics and powered by two P&W Canada PT6A -60A turboprop engines