Tokyo-based Mitsubishi Heavy Industries Ltd. picked its contractors to supply major parts, including avionics, for the Mitsubishi Regional Jet (MRJ). Mitsubishi said Parker Aerospace, based in California, will develop the hydraulic system; Hamilton Sundstrand Corp., a unit of United Technologies, will supply electrical power and air management systems, an auxiliary power unit and other key systems; and Rockwell Collins, based in Cedar Rapids, Iowa, will manufacture a flight control system. Tokyo-based Japanese company Nabtesco Corp. will work with Rockwell Collins on the flight control system, and Sumitomo Precision products Co. Ltd, based in the western city of Hyogo, will produce landing gear. Earlier, the company chose Pratt & Whitney as an engine supplier. The twin-engine jet is to seat about 70 to 90 people and is slated for delivery as early as 2012. The jet, to be made with lightweight carbon fiber composite, is designed to consume about 20 percent less fuel than rival jets, the company said.