The DHC-8, which was on its way to transport supplies to Niigata in response to the Noto Peninsula earthquake which happened the day before, had taxied onto runway 34R via taxiway C5 as JL516 was on final approach.
After touching down, the A350 struck the DHC-8. The nose section of the A350 suffered severe damage. The Airbus slid over the runway for about 1700 meters, until it veered to the right, coming to stop next to the runway just before the intersection with C11, and a fire erupted in both aircraft.
All occupants of the A350 evacuated safely via L1, R1 and L4 doors. One passenger suffered injury of crack(s) in rib(s), another one a bruise, the third people a sprain. 12 others also sent to hospital due to feeling unwell. Another passenger’s bone bruise on shin bone was reported a month later.
The captain of the DHC-8 Japan Coast Guard aircraft also survived with severe burn injuries. The remaining crew of five were killed in the accident.

Communications released by Ministry of Land, Infrastructure, Transport and Tourism indicate that JL516 had been cleared to land on runway 34R. JA722A had been instructed to hold short on taxiway C5. This instruction was read back correctly, however, the survived captain of DHC-8 asserted just after the accident that he had been cleared for takeoff, which is contrary to the ATC record.

Additionally, it appears the stop bar lights for taxiway C5 (and other taxiways) was unserviceable, as per Notam published on December 25: “STOP-BAR-LGT FOR C1 THRU C14-U/S”.