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Investigative Update of Battery Fire Japan Airlines B-787 - Jan 7, 2013

Investigative Update of Battery Fire Japan Airlines B-787 - Jan 7, 2013 . Deborah A.P. Hersman Chairman February 7, 2013. Main battery location. Auxiliary Power Unit (APU) battery location. Previous Findings. Fire Thermal runaway Short circuiting. Progress.

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Investigative Update of Battery Fire Japan Airlines B-787 - Jan 7, 2013

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  1. Investigative Update of Battery FireJapan Airlines B-787 - Jan 7, 2013 • Deborah A.P. Hersman • Chairman • February 7, 2013

  2. Main battery location Auxiliary Power Unit (APU) battery location

  3. Previous Findings • Fire • Thermal runaway • Short circuiting

  4. Progress • Determine the origin of the battery fire • Determine the cause of the fire • Review certification documentation and testing

  5. Investigative Work Testing and Examinations

  6. Thermal Damage 8 1 Area of most thermal damage 2 7 3 6 5 4

  7. Inside the Battery Cells on the left side Cells on the right side 1 2 4 3 7 6 5 8 Moderate thermal damage Substantial thermal damage

  8. Mechanical Damage 8 1 2 7 3 6 5 4

  9. Focus on Cell #6 Event battery from JAL airplane Cell #6

  10. Damaged electrode in Cell #6 Hot Spot Yellow card is a laboratory marking used for identification purposes.

  11. Ruled Out • Mechanical impact damage Damage from firefighting efforts

  12. Ruled Out • External short circuit of cell or battery Viewed From Outside (Post-clean)

  13. Still Being Evaluated • Cell charging • Potential manufacturing issues • Battery design considerations

  14. Certification of the 787 Battery

  15. Certification of the 787 Battery FAA Special Conditions: Boeing Model 787-8 Airplane; Lithium Ion Battery Installation October 11, 2007

  16. Certification of the 787 Battery Exemplar Battery JAL Event Battery

  17. Next Steps • Examine validation methods for certification of battery • Conduct tests on field replacement batteries • Open our public docket and provide an interim factual report within 30 days

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