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Tag Archives: Dreamliner

NTSB Li-Ion Review

NTSB has scheduled their review of the 787 lithium-ion batteries for April 23-24:

The hearing will focus on issues relating to the design, testing and certification of the battery system.

Boeing seems to think they are close to FAA approval of their proposed solution. Its seems like this workshop is entirely untethered from Boeing’s efforts to address the battery problem.

NTSB Li-Ion Review

NTSB has scheduled their review of the 787 lithium-ion batteries for April 23-24:

The hearing will focus on issues relating to the design, testing and certification of the battery system.

Boeing seems to think they are close to FAA approval of their proposed solution. Its seems like this workshop is entirely untethered from Boeing’s efforts to address the battery problem.

Dreamliner Test Flights

Boeing has been doing some test flights for the 787.

More Than Containment

Boeing has given more details on their proposed fix for the 787 batteries:

Sinnett’s claim that the battery-enclosure box prevents fire altogether clearly surprised his skeptical audience of journalists.

Combatively, he insisted that the media have misreported the purpose of Boeing’s battery-enclosure box by describing it as “containing a fire.”

No, Sinnett said.

“This enclosure keeps us from ever having a fire to begin with,” he said.



Read the whole article… Good details on the overall fix.

Boeing on 787 Certification

Boeing has published a webpage highlighting the FAA Approval of their certification process.

“Working with internal and external experts in battery technology, we have proposed a comprehensive set of solutions that provide three layers of improvements in the battery system,” said Ray Conner, president and chief executive officer of Boeing Commercial Airplanes.

Boeing’s full press release can be found here.

FAA Approves Dreamliner Testing

The big news in the last week is that the FAA has approved the recertification process that Boeing has proposed for the Li-ion batteries in the 787. From their press release:

The certification plan is the first step in the process to evaluate the 787’s return to flight and requires Boeing to conduct extensive testing and analysis to demonstrate compliance with the applicable safety regulations and special conditions.

The important thing to understand is that the 787 is NOT cleared for flight. Nor has Boeing’s proposed fix been cleared for implementation. The FAA has approved a series of tests that Boeing must perform, and the Li-ion batteries must pass, to prove the proposed fix works properly.

There’s still a long road ahead of Boeing on this issue.

Li-ion NTSB Forums

The NTSB has called for two forums to discuss and review Li-ion battery technology. These forums have arisen out of the ongoing 787 battery investigation. From USAToday:

The board will have the first forum in mid-April to discuss battery technology with transportation safety experts. The investigative hearing later in the month will focus on the design and certification of the Dreamliner’s battery system.

NTSB and 787

NTSB Press Release regarding their 787 battery investigation. They’ve produced a 48-page Interim Report and released 499 pages of other material. I’ll be reading the report tonight.

More Dreamliner Electrical Issues

The Dreamliner plot thickens.

Japanese aerospace union officials cast new light on problems with the 787’s power distribution panels Wednesday, saying one malfunction last year caused a burned circuit board and disclosing two other previously unpublicized incidents.

Japan’s 787 Investigation

Christine Negroni has gleaned some interesting information from a Japanese Transport Safety Bureau report including the following:

Japanese investigators are making a remarkable claim in the most recent update into the burning battery on an All Nippon Airways Dreamliner; the ship, JA804A was one of only three Boeing 787s to retain a wiring design the planemaker later revised.

The post is worth reading and even discusses some of the finer points of the Li-ion battery design in the 787.