Asiana Airlines flight to LAX is holding and dumping fuel.
Flight #OZ202 from Seoul to Los Angeles is experiencing technical problems.
The flight turned around East of Japan before diversion to Tokyo.
The aircraft is an A380 (reg. HL7626) which is 9 years old.
UPDATE #1
Crew is currently holding at 9,000ft since over one hour.
UPDATE #2
The flight is diverting to Tokyo Narita due to a medical emergency on board.
UPDATE #3
Flight #OZ202 has landed on runway 14L at Tokyo Narita.
UPDATE #3
The A380 departed Tokyo to LAX.
Long haul aircraft such as the Airbus A380 and Boeing B777 are equipped to jettison fuel in emergency situations only. According to CAA guidelines fuel should be dumped over the sea or if this is not possible it should be above 10,000 feet to allow the fuel to evaporate before reaching the ground.