Mitsubishi Aircraft Corp. on Saturday finally unveiled Japan's first homegrown passenger jet following three delays.

The subsidiary of Mitsubishi Heavy Industries Ltd. rolled out the new twin-engine Mitsubishi Regional Jet at a plant in the town of Toyoyama, Aichi Prefecture, where the midsize aircraft was built with help from the state and other companies.

With its maiden flight due next spring, the Nagoya-based firm plans to start testing this year and delivery in 2017. It has been delayed three times.