Fault detected in main battery charger of Japan’s ANA, a Boeing 787 Dreamliner

Published on : Monday, November 18, 2013

ANA-LOGOA fault was detected in the main battery charger of the world’s biggest fleet of Boeing Co (BA.N) 787 Dreamliners, Japan’s ANA Holdings Inc (9202.T) operating the world’s biggest fleet . The crew detected the fault in the aircraft, the battery was immediately replaced.

The fault was identified during regular maintenance of the aircraft and the replacement was done immediately. ANA sent the faulty charger to maker Thales SA (TCFP.PA) in France.

Boeing’s state-of-the-art jet, has two large lithium-ion batteries that provide backup power to aircraft systems. The meltdown of two of those batteries, one on an ANA flight in Japan and one on a Japan Airlines (9201.T) jet in Boston, prompted aviation authorities to ground the 787 fleet for more than three months.

While minor faults are not uncommon with aircraft, aviation industry watchers nonetheless remain sensitive to any new glitches with the 787, particularly any related to the batteries.

After the earlier battery incidents, Boeing redesigned the power pack and charger system, adding insulation and a steel box to contain any further meltdowns and a specialized vent to eject any smoke outside the aircraft. The root cause for overheating has yet to be identified by the United States and Japan.

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