Japan Airlines (JL/JAL) returned Boeing 787-8 JA834J to service early morning on January 28th with flight JL2, which took off from Tokyo/Haneda (HND/RJTT) at 0022 local time. It arrived eight hours and a half later at San Francisco (SFO/KSFO) without any abnormalities. The aircraft was grounded on January 14th after
a battery problem was discovered during a check-up at Tokyo/Narita
(NRT/RJAA), while it was being prepared for a flight to
Bangkok/Suvarnabhumi (BKK/VTBS) as flight JL707. (Battery problem grounds a JAL Boeing 787.)
The damaged battery had a venting valve for one of the eight cells activated and liquid had leaked inside. It has now been replaced by a new one, and after finding no problems testing with the new battery, the Japan Civil Aviation Bureau (JCAB) gave permission to return the aircraft to service. The damaged battery is still under investigation and JCAB officials have quoted "it's not something we will know today or tomorrow", suggesting it is likely to take a much longer time.
Source: Aviation Wire (in Japanese)
The damaged battery had a venting valve for one of the eight cells activated and liquid had leaked inside. It has now been replaced by a new one, and after finding no problems testing with the new battery, the Japan Civil Aviation Bureau (JCAB) gave permission to return the aircraft to service. The damaged battery is still under investigation and JCAB officials have quoted "it's not something we will know today or tomorrow", suggesting it is likely to take a much longer time.
Source: Aviation Wire (in Japanese)
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