Battery

July 29, 2013 - 2:15pm

The July 24 report by the United Arab Emirates’ General Civil Aviation Authority (GCAA) on the Sept. 3, 2010, crash of a UPS Boeing 747 in Dubai urges operators of the Boeing freighter to consider the role aircraft vibrations and the acoustical energy they generate might play in onboard lithium-ion battery fires. While GCAA investigators suspect an onboard battery fire brought down the aircraft, they did not pinpoint the cause in their conclusions.

June 13, 2013 - 11:05am
The FAA has approved a modification kit for the Boeing 787 batteries to be practically exempt from a risk of fire.

The FAA-approved Boeing service bulletin for the 787 calls for modification of the charger and battery monitoring unit to narrow the acceptable level of charge. In essence, this means lowering the maximum charge allowed and raising the minimum level of discharge allowed. In other words, it cuts the performance gain the lithium-ion technology is supposed to bring.

June 13, 2013 - 11:00am

As Ethiopian Airlines, Qatar Airways and other Boeing 787 customers are returning their Dreamliners to service with battery system modification kits, the U.S. National Transportation Safety Board (NTSB) is still looking for the cause of the January 7 APU battery fire aboard a Japan Airlines 787 parked at Boston Logan International Airport.

April 29, 2013 - 11:28am

As Ethiopian Airlines and other Boeing 787 customers prepared to return their Dreamliners to service with battery system modification kits, the U.S. National Transportation Safety Board (NTSB) conducted an exhaustive, two-day investigative hearing into the design and certification of the lithium-ion batteries implicated in the airplane’s grounding. Sixteen witnesses testified and answered questions during the hearing on April 23 and 24 at the Board’s Washington, D.C., headquarters.

April 23, 2013 - 5:16pm
Boeing 787 chief project engineer Michael Sinnett

U.S. National Transportation Safety Board (NTSB) members and technical specialists questioned representatives of Boeing and the Federal Aviation Administration on Tuesday about assumptions they made in determining the probability of lithium-ion batteries failing on the Boeing 787 Dreamliner.

April 22, 2013 - 1:12pm

Boeing and 787 operators around the world began installing modification kits in their Dreamliners last Friday after the U.S. Federal Aviation Administration approved the manufacturer’s proposed “fix” to their battery systems.

April 19, 2013 - 3:04pm

Boeing cleared one of the last hurdles in its campaign to return the 787 to service Friday afternoon, when the U.S. Federal Aviation Administration announced it had approved its design modifications for the airplane’s battery system. The FAA said the changes address risks at the battery cell level, the battery level and the aircraft level.

April 8, 2013 - 11:20am

Boeing moved one step closer toward returning the 787 to service on Friday, when it flew Dreamliner Line Number 86 on a one-hour, 49-minute mission to demonstrate conformity of its battery system modification to U.S. certification authorities. Painted in LOT Polish Airlines livery, LN 86 took off from Paine Field in Everett, Washington, at 10:39 a.m.

April 5, 2013 - 3:33pm

Boeing took a significant step toward returning the 787 to service on Friday, when it flew Dreamliner Line Number 86 on a one-hour, 49-minute mission to demonstrate conformity of its battery system modification to U.S. certification authorities.

March 18, 2013 - 2:50pm

Boeing executives expressed what they consider a “reasonable expectation” that the 787 Dreamliner would return to service in a matter of a few weeks at a briefing last Friday in Tokyo during which they detailed the company’s plan for certifying a solution to the “issues” surrounding the airplane’s lithium-ion batteries. However, Boeing Commercial Airplanes CEO Ray Conner and 787 chief program engineer Mike Sinnett acknowledged that the timing will depend completely on the U.S. Federal Aviation Administration’s certification schedule and a smooth execution of the testing.

 
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