Thu, Jan 31, 2013
Microscopic Examinations Being Conducted In Areas Of Short Circuiting
In its sixth update on its investigation into a battery fire aboard a JAL Dreamliner January 7, the NTSB said its examination of the damaged battery 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.
(Pictured: NTSB investigator Joseph Panagiotou examines a battery cell from the JAL B-787 with a stereo microscope. NTSB photo.)
Three-Eight Charlie If you know the name of the first woman to fly solo around the world, you’re ahead of most people. By the way, if you thought it was Amelia Earhart, you&r>[...]
Holding pattern. A racetrack pattern, involving two turns and two legs, used to keep an aircraft within a prescribed airspace with respect to a geographic fix.>[...]
“We need a world-class system of weather prediction in the United States – one, as the National Academy of Sciences recently put it, that is ‘second to none'." So>[...]
Send Them A Story -- We Don't Mind! Do you need another set of eyes to see that story you can't believe Jim just wrote? Want to spread Hognose's unique wisdom and perspective to th>[...]
Cites 'Strong Record On Aviation Security' The Association of Flight Attendants-CWA (AFA) has endorsed Congressman Ed Markey for the U.S. Senate, specifically noting his proven rec>[...]