What appeared to be smoke was seen coming from the landing gear of a Japan Airlines Co. plane after it landed Thursday morning at New Chitose Airport near Sapporo, JAL and firefighters said.
None of the 503 passengers and 13 crew members aboard the Boeing 777 was injured, JAL said. Firefighters were unable to see the cause of the problem after spraying water on the landing gear, the airline said.
The flight originated at Tokyo's Haneda Airport. The emergency escape chutes were not deployed.
Officials in the control tower saw what appeared to be smoke coming from the landing gear under the right wing, JAL said.
The airliner came to a halt on a taxiway before moving to a parking slot where the passengers were unloaded.
After the landing, the cockpit gauges indicated a problem in the hydraulic system, JAL said, noting that oil may have leaked onto the landing gear brakes.
Airport authorities closed one of the two 3,000-meter runways for about 30 minutes, sending some incoming flights to other airports in Hokkaido and delays of up to 95 minutes for departures.