The water supply at Tokyo's Haneda Airport has been fully restored after a days-long suspension.
The Japan Airport Terminal Company suspended the water supply to the airport's two terminals for domestic flights on Wednesday after salt was detected in a water tank and tap water at a facility for washing aircraft.
Sightings of a possible drone have caused runway closures and flight disruptions at Kansai International Airport in Osaka, western Japan.
The airport's operator says that shortly after 10 p.m. on Thursday, the pilot of a plane on approach to the airport reported sighting what appeared to be the light of a drone.
Flight operations at Osaka International Airport in western Japan have been disrupted after a knife was found during a security check.
Police were notified on Thursday morning that the knife was found in the bag of a male passenger who had gone through a security gate in the airport's southern inspection area, which is mainly used by All Nippon Airways.
Officials at the operator of Fukuoka Airport in western Japan have mistakenly sent the entry passcodes for some doors in the airport building to media outlets.
They say they planned to send the codes by fax to shops and companies in the airport terminal on Monday evening. That was as part of measures to step up security ahead of a meeting of G20 finance ministers and central bank governors in Fukuoka City next month.
A counterterrorism drill with an emphasis on providing guidance in foreign languages has been held at Tokyo's Haneda airport in the lead up to the Tokyo Olympic and Paralympic Games next year.
The drill was held on Wednesday at two railway stations that directly service the airport's international passenger terminal. About 250 people, including railway officials and police officers, took part.
Japan's Defense Ministry has reported that a US military Osprey aircraft made an emergency landing at Osaka International Airport in western Japan on Monday afternoon.
The tilt-rotor aircraft is stationed at US Marine Corps Futenma Air Station in Okinawa Prefecture. The ministry said it was flying to Naval Air Facility Atsugi in Kanagawa Prefecture from Marine Corp Air Station Iwakuni in Yamaguchi Prefecture.