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 08.22.14 ** HD iPad-Friendly -- Airborne 08.22.14 **
** Airborne 08.20.14 ** HD iPad-Friendly -- Airborne 08.20.14 **
** Airborne 08.18.14 ** HD iPad-Friendly -- Airborne 08.18.14 **

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.

ARIZONA

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.

SEATTLE

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.

JAPAN

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.

FMI: www.ntsb.gov, http://go.usa.gov/4K4J, www.twitter.com/ntsb

 


Advertisement

More News

Experimental SpaceX Vehicle Lost In TX Test Flight

As SpaceX Knows, That's Why They Call Them 'Test Flights' Initial Report by ANN Space Correspondent, Wes Oleszewski "So we're 5-for-5 testing on this Grasshopper. Wahoo! But, but t>[...]

Airborne 08.22.14: Russians Nix Global Gyro, Alphabets Fight FAA, F-16s Cracking

Also: Ferguson TFR, Soaring Company's S.O.S., High Altitude Balloons, Remembering Vicki Cruse An attempt to fly the first gyrocopter around the world by Norman Surplus has been foi>[...]

Aero-TV: Honoring Our Legacy - Recrafting Paul’s Game-Changing Baby Ace

A Bit Of History Lovingly Restored To The Sport Aviation World ANN's Michael Maya Charles had to search around at EAA AirVenture 2014 to find this story. The Aeroplane Factory buil>[...]

Airborne 08.22.14: Russians Nix Global Gyro, Alphabets Fight FAA, F-16s Cracking

Also: Ferguson TFR, Soaring Company's S.O.S., High Altitude Balloons, Remembering Vicki Cruse An attempt to fly the first gyrocopter around the world by Norman Surplus has been foi>[...]

ANN's Daily Aero-Linx (08.23.14)

National Association of Priest Pilots The stated purpose of is group is to promote the use of private aircraft as a practical, safe, and efficient tool of the apostolic work of a p>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2014 Web Development & Design by Pauli Systems, LC