Tokyo: Mitsubishi Heavy Industries said Tuesday it had abandoned its struggling project to develop a passenger plane, a decade after the jet was due for commercial rollout.
The Japanese company said its SpaceJet, which suffered repeated delivery delays and technical glitches, had "failed to confirm sufficient business viability".
The development of the twin-engine plane for short flights had marked a new chapter for Japan's aviation sector, which last launched a commercial airliner in 1962.
But the project -- started in 2008 under the name Mitsubishi Regional Jet, with the first deliveries planned for 2013 -- had big trouble getting off the ground.
Some test flights were aborted because of air conditioning defects and other software problems, and the delays meant revisions to the original design were required.
It was "difficult to obtain understanding and necessary cooperation from global partners", and "further extensive funding" was needed to get the plane's design approved, Mitsubishi Heavy said.
North American regulations, pilot shortages and the need to find "decarbonisation solutions" also contributed to the project's demise, the company said.
The jet programme, which was backed by the Japanese government and major firms including Toyota, changed its name to SpaceJet in 2019.
Mitsubishi Heavy said its decision "will have no material impact on MHI's financial results".