No Obvious Battery Anomalies On JAL787/Boston Battery | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Recent Daily Episodes

Episode Date






Airborne On ANN

Airborne 10.24.16

Airborne 10.25.16

Airborne 10.19.16

Airborne 10.20.16

Airborne 10.21.16

Airborne Hi-Def On YouTube

Airborne 10.24.16

Airborne 10.25.16

Airborne 10.19.16

Airborne 10.20.16

Airborne 10.21.16

Mon, Jan 28, 2013

No Obvious Battery Anomalies On JAL787/Boston Battery

NTSB Provides Fourth Investigative Update on B787 Battery Fire in Boston 

Showing no small impatience to get at the truth, the NTSB has released a fourth update on its investigation into the Jan. 7 fire aboard a Japan Airlines Boeing 787 at Logan International Airport in Boston.

The fire occurred after the airplane had landed and no passengers or crew were onboard. The event airplane, JA829J, was delivered to JAL on December 20, 2012. At the time of the battery fire, the aircraft had logged 169 flight hours with 22 cycles. The auxiliary power unit battery was manufactured by GS Yuasa in September 2012.

NTSB investigators have continued disassembling the internal components of the APU battery in its Materials Laboratory in Washington, and disassembly of the last of eight cells has begun. Examinations of the cell elements with a scanning-electron microscope and energy-dispersive spectroscopy are ongoing.

A cursory comparative exam has been conducted on the undamaged main battery. No obvious anomalies were found. More detailed examination will be conducted as the main battery undergoes a thorough tear down and test sequence series of non-destructive examinations.

In addition to the activities at the NTSB lab, members of the investigative team continue working in Seattle and Japan and have completed work in Arizona. Their activities are detailed below.


The airworthiness group completed testing of the APU start power unit at Securaplane in Tucson and the APU controller at UTC Aerospace Systems in Phoenix. Both units operated normally with no significant findings.


Two additional NTSB investigators were sent to Seattle to take part in FAA's comprehensive review. One of the investigators will focus on testing efforts associated with Boeing's root cause corrective action efforts, which FAA is helping to lead. The other will take part in the FAA's ongoing review of the battery and battery system special conditions compliance documentation.


The NTSB-led team completed component examination of the JAL APU battery monitoring unit at Kanto Aircraft Instrument Company, Ltd., in Fujisawa, Kanagawa, Japan. The team cleaned and examined both battery monitoring unit circuit boards, which were housed in the APU battery case. The circuit boards were damaged, which limited the information that could be obtained from tests, however the team found no significant discoveries.

The NTSB promises another factual update on Tuesday, Jan. 29, or earlier if developments warrant.




More News

Airborne 10.21.16: NIMBYs Out Of Control, SMO Evictions On Hold, New Race Class

Also: CVR/FDR Expansion, Focusing On Santa Monica, NASAO Boss, GE9X Engine, 1000th H-60M, Verizon Drones, New LAS ATC A Transportation Safety Board of Canada team is currently inve>[...]

Aero-News: Quote of the Day (10.24.16)

“We want to promote EAA, our passion for flight, and our mission of growing participation in aviation in way that’s fun and engaging. The Spirit of Aviation mobile mark>[...]

Aero-News: Quote of the Day (10.23.16)

Aero-News Quote of the Day "Think of this transition as changing an engine on a plane when it's inflight. Rolling out STARS in our nation's busiest airspaces, without disrupting ai>[...]

ANN's Daily Aero-Linx (10.24.16)

Aero Linx: The Canadian Aerospace Medicine and Aeromedical Transport Association CAMATA is the acronym for the Canadian Aerospace Medicine and Aeromedical Transport Association. It>[...]

ANN's Daily Aero-Linx (10.23.16)

Aero Linx: The Society of United States Air Force Flight Surgeons (SoUSAFFS) SoUSAFFS was established in 1960 to more specifically support the USAF FS than AsMA at large could. Sin>[...]

blog comments powered by Disqus





© 2007 - 2016 Web Development & Design by Pauli Systems, LC