The plane is reported to be carrying more than 300 passengers and is believed to have collided with a Japanese coast guard aircraft as it was travelling down the runway. It seems like Japan can't really catch a break at the moment after the earthquake in Ishikawa. This certainly is an extremely rare accident to see happen in the aviation industry.
Update: It is being reported that five of the six crew member on the coast guard aircraft have died as a result of the collision.
