Last week, governments around the world earth dream plane, and Boeing stop after the delivery of a question lithium ion battery in the second all Nippon airways company of national advertisers (ANA) of 787 aircraft, flight, the plane was forced to emergency landing in western Japan.
More and more research and Boeing executives are work around the clock to determine is what reason creates two of the event, the federal aviation administration said that the release of flammable chemicals, and may cause a fire broke out in the plane, the electrical room.
There are the root cause of the failure of the battery, there is no clear answer, but the U.S. national transportation safety board statement eliminated by Japanese researchers have proposed a possible answers.
It also emphasizes the investigation, including the world of manufacturing battery system complexity, may point to a design problem, may need more time to deal with than in a wrong a batch of battery cell.
"From Japan airlines B - 787 aircraft flight recorder data test shows that the APU (APU) battery not more than its design voltage for 32 v," NTSB early published on Sunday, said in a statement.
Last Friday, Japan's security officials told reporters, excessive power may have overheated battery in the last week, was forced to emergency landing in Japan takamatsu airport all Nippon airways plane have a dream.
"The NTSB want to help victim of an injustice, and said:" a people familiar with the investigation did not authorized to speak publicly.
The investigators have lithium ion batteries battery fire start, Japan airlines plane, APU, and some other from the plane, remove the components, including electrical wiring harness and battery management circuit boards, NTSB said in a statement.
On Tuesday, the researchers will in Arizona Tucson, Arizona at the charger for battery test and inspection, and download the APU controller nonvolatile memory, in the establishment of the APU facilities similar test plan. Has been sent to download or check Boeing Seattle factories and manufacturer, the other part in Japan.
British meggie, PLC, make the charger unit, Securaplane technology co., LTD., says it will support us study.
United technology company, the establishment of the auxiliary power plant and electrical system is the main supplier of the relevant person in charge in 787 also said they will cooperate with investigation.
National transportation safety board's decision, to Securaplane facilities, triggered a new problem, the safety of the lithium ion battery and stay in the heart of the survey.
Although 787 lithium ion battery technology in civil aviation is the most active users, the industry's test, FAA has approved its use in several different plane, each by the "special conditions".
The federal aviation administration said: "lithium ion battery are more prone to self sustaining temperature and pressure increases, may lead to internal fault," in 2006, when it is new lighting system, the A380 airbus use lithium battery.
Securaplane, it first in charger to start the work, in 2004, November 2006 suffered millions of dollars in compensation, the use of lithium ion battery in testing explosion and cause fire burned the administration building.
Boeing spokesman mark Birtel said, later in 2006 to determine the fire investigation has cause incorrect test set, not cell design. He refused to comment on the current 787 survey.
After the fire, a group called Michael Leon former Securaplane employee sued the company, claiming that he was fired for improving safety concerns charger and assembly body documents and finished the difference between the charger.
Leon suit, and then fired.
The federal aviation administration (FAA) announced Sunday that it has in 2008 and 2009 survey Leon safety complaints, but think he charges mainly concentrated in the new lightweight aircraft prototype, not end use.
FAA spokesman Laura Brown said, Securaplane review also found that the production of a particular printed circuit board, in line with the requirements of the federal aviation administration.
Japan GS soup shallow company lithium ion battery for "dreamliner", and French thales company produces the battery control system. Thales company refused to comment on the report.
In its statement, the NTSB says that the French authorities are part of the investigation. No immediate comment from France safety mechanism.
Japan survey ready to go
Japan transportation safety board said, this is the understanding of the national transportation safety board report, and will consider in the United States declare in its detection.



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