Mitsubishi Aircraft Corp., trying to keep its new regional jet on track after a series of delays, was forced to cancel a demo flight for the world's aerospace industry Tuesday after the jet was hit by a truck.

The collision, which follows the jet's debut at the show Monday, will not interrupt marketing efforts. But it will do nothing to help the Mitsubishi Regional Jet pull in orders at a time when giants Airbus SE and Boeing Co. are extending their grip to the smaller end of the market.

The 90-seat MRJ, Japan's great hope for reviving a dormant commercial aviation industry, was launched a decade ago. Five delays later, it is now expected to enter service with carrier ANA Holdings Inc. in 2020, compared with the initial target of 2013.