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TOKYO - A Japan Airlines Boeing 787 jet has returned to a Tokyo airport shortly after takeoff for a problem unrelated to the batteries that had forced the aircraft to be grounded.
JAL spokesman Jian Yang said the problem emerged Tuesday with the anti-ice system in a flight to Singapore about an hour after takeoff. The system is needed depending on weather conditions, he said.
It returned to Haneda safely, he said.
The 787 jets were grounded for four months to confirm their safety after their lithium-ion batteries overheated. The batteries are now encased to prevent overheating from spreading.
"Dreamliner" batteries overheated on planes that were in flight in Japan and parked in a Boston airport. The jets resumed commercial flights last month at JAL and All Nippon Airways.