Japan’s first commercial jet, The Mitsubishi Regional Jet (MRJ) – developed by Mitsubishi Heavy Industries, in half a century made its maiden flight on Wednesday. The two-engine aircraft, approximately 35 metres (115ft) long, flew smoothly upward into clear skies in central Japan. It is an important milestone for an ambitious effort by Japan to develop its aerospace industry. The flight seems to have gone well, with the Guardian reporting that it “flew smoothly upward…