The King Air 90 was the first model King Air produced by Raytheon Beechcraft. By 1968 there were 400 in production. The King Air 90 is great for short range business and leisure charter. The main difference in King Air 90 models is the kind of engines used. The King Air 90 can accommodate up to six passengers, has a enclosable potty, cruises at 235 mph, has a range of 1000 miles, and has an interior cabin of 4.5W x 12.6L x 4.8H.