Sixth NTSB update:
|
| January 29
|
| WASHINGTON - The National Transportation Safety Board today
| released the sixth update on its investigation into the
| Jan. 7 fire aboard a Japan Airlines Boeing 787 at Logan
| International Airport in Boston.
|
| The examination of the damaged battery continues. The work
| has transitioned from macroscopic to microscopic
| examinations and into chemical and elemental analysis of
| the areas of internal short circuiting and thermal damage.
|
| Examination and testing of the exemplar battery from the
| JAL airplane has begun at the Carderock Division of the
| Naval Surface Warfare Center laboratories. Detailed
| examinations will be looking for signs of in-service damage
| and manufacturing defects. The test program will include
| mechanical and electrical tests to determine the
| performance of the battery, and to uncover signs of any
| degradation in expected performance.
|
| As a party contributing to the investigation, Boeing is
| providing pertinent fleet information, which will help
| investigators understand the operating history of
| lithium-ion batteries on those airplanes.
|
| An investigative group continued to interpret data from the
| two digital flight data recorders on the aircraft, and is
| examining recorded signals to determine if they might yield
| additional information about the performance of the battery
| and the operation of the charging system.
|
| In addition to the activities in Washington, investigators
| are continuing their work in Seattle and Japan.
|
| Additional information on the NTSB's investigation of the
| Japan Airlines B-787 battery fire in Boston is available at
| http://go.usa.gov/4K4J.
|
| The NTSB will provide another factual update on Friday,
| Feb. 1, or earlier if developments warrant. To be alerted
| to any updates or developments, follow the NTSB on Twitter
| at www.twitter.com/ntsb.
|
http://www.ntsb.gov/news/2013/130129b.html

--bks