A United 777-200 departs from Washington-Dulles (Photo: AirlineGeeks | Ben Suskind)

United, Japan Suspend Operations of PW4000 Boeing 777s

Through a Notice to Airmen released Sunday, the Japanese aeronautical authority reported that it had decided to prohibit the operations of Boeing 777s with Pratt & Whitney 4000 engines until further notice. This prevents the operation of 32 aircraft owned by Japan Airlines and All Nippon Airways as well as the overflight and takeoff or landing in Japanese territory by all aircraft with the engines. The measure, taken by Japan's Ministry of Lands, Infrastructure, Transport and Tourism affects 13 aircraft…