Japan's transport ministry is examining if the pilot of a coast guard plane that collided with a Japan Airlines passenger jet misinterpreted an air traffic controller's words, making him think he was cleared for takeoff.

The transport ministry released communication records, following Tuesday's fatal collision of the coast guard plane and a Japan Airline's Airbus A350 on a runway at Tokyo's Haneda Airport.

The transcript showed that the controller called the coast guard plane "No.1," and instructed the plane to taxi to a holding point short of the runway.

The ministry says "No.1" in this case meant the plane was allowed to jump the queue of the aircraft that were waiting to take off.

The ministry adds that this "No.1" only indicated the order for planes to take off after the JAL aircraft landed.

While the air traffic controller gave no further instructions, the coast guard plane entered the runway, leading to the collision.

Five of the six coast guard members on board were killed. The captain survived, with serious injuries.

All 379 passengers and crew on the JAL plane were safely evacuated. Fifteen passengers who sustained injuries or felt unwell received medical treatment.