The Citation CJ1, introduced in 2000 as an evolution of the original CitationJet, brought enhanced capabilities and refinements. It retained the Williams FJ44-1A engines but introduced improvements in fuel efficiency and operational costs. The CJ1 also featured the advanced Rockwell Collins Pro Line 21 avionics suite, offering pilots greater situational awareness and ease of navigation. With a similar range to the original CJ and a slightly increased cruising speed of 389 knots, the CJ1 was designed to accommodate up to five passengers in a cabin that refined comfort and functionality, making it an ideal choice for small business and private owners seeking a blend of performance and luxury.