The Mitsubishi Regional Jet (MRJ) aborted two consecutive test flights last week after identifying problems with the aircraft’s air-conditioning system.
In a statement, the programme’s parent firm Mitsubishi Heavy Industries confirmed the air management system on the first flight on August 27 stopped automatically after experiencing a problem with the monitoring function.
The following day (August 28), the OEM said it recognised a similar issue with the same system. The aircraft was on test flights from Japan to its testing centre in Moses Lake, Washington, but landed in Nagoya a little over two hours after takeoff.
Mitsubishi said it is now conducting an investigation into the issues to determine whether the problem lies within the air management system or the monitoring function itself.
“We will decide the date to resume the ferry flight based on the results of inspection,” it said.