NAGOYA, Japan -- Mitsubishi Aircraft's MRJ passenger jet prototype No. 3 has touched down in the U.S. state of Washington, where it will be tested for airworthiness, the Japanese company announced Monday.
The plane joins three other prototypes of the Mitsubishi Regional Jet, Japan's first homegrown commercial jetliner, that had arrived previously. All four prototypes will undergo testing in the western U.S. state.
According to the company, the jet left Nagoya Airport on March 13, but returned after an oil leak in a hydraulic line was found after it took off from an airport in Hawaii.
After parts were replaced and it received another safety check, the airplane left Hawaii on Saturday and arrived in Washington the same day, the company said.
Mitsubishi Aircraft has postponed the planned delivery date of its first MRJs to 2020, citing design changes, including to its wiring.