King Air C-90

After 507 C90s and 347 E90s were constructed, the Model C90-1 went into production. It had PT6A-21 engines and pressurisation system upgrades. Built were 54. With updated PT6A-135A engines, hydraulic landing gear, and a triple-fed electrical bus, the F90-1 was introduced the following year and went into production; only 33 were made by the time manufacturing ceased in 1985. The Model C90A, which included the F90-revised 1's engine cowlings, came out shortly after the C90-1. In 1987, the C90A's MTOW was increased and certified at 10,100 lb (4,580 kg). Up until 1992, 235 of the C90A model had been produced, all but 74 of which possessed the enhanced MTOW. 1992 saw the production of just two C90As before the Model C90B, which had an improved airframe, four-bladed propellers, and propeller synchrophasing in an effort to quiet the cabin, was introduced. The first C90B in production was equipped with the 10,000th PT6 engine to be supplied to Beechcraft, and this model also featured PT6A-21s. The C90SE (Special Edition), a less expensive model with three-bladed propellers, a standard interior, and mechanical instruments in place of the Electronic Flight Instrument System (EFIS) installed in the C90B, was introduced in 1994. By the time C90B and C90SE manufacture ceased in late 2005, 456 of each model had been delivered.