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FAA Grounds 787s

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FAA Grounds 787s

Old 2nd Jan 2015, 15:00
  #2181 (permalink)  
 
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IIRC Discard the ice cubes.
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Old 2nd Jan 2015, 19:30
  #2182 (permalink)  
 
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According to the report cited in #2162, the battery in question has a manufacturing date of May 9, 2013. And a failure approximately 7 months later.

We can assume that the fleet-wide age of all 787 batteries was effectively reset to zero on or around May, 2013. So it will be interesting to see if the failure rate vs battery age has improved over the original design or not.

It is noteworthy that the resulting damage in the January 14, 2014 incident appears to be confined to a single cell. So at least the cell spacing and battery box are working as intended.
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Old 3rd Jan 2015, 20:36
  #2183 (permalink)  
 
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GYS: The actions you quoted from IATA are taken from the FAA instructions from 2009.

Boeing's instructions,issued in 2013, say you should use Halon (or a substitute) to kill the fire. If you don't have Halon to hand CO2 will do. At no point do they mention water.
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Old 4th Jan 2015, 04:58
  #2184 (permalink)  
 
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Hi Kelvin,
I am not aware of Boeings' procedures.
Obviously Halon is perfect for extinguishing but it doesn't cool.
I feel a bit stupid questioning Boeing, but what does Boeing say about cooling?
The whole essence (and unique feature?) of a Lithium battery fire is the thermal runaway. It needs to be cooled. And every consumer should know.

Sorry for the thread drift...
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Old 21st Mar 2015, 21:41
  #2185 (permalink)  
 
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Interesting case: Aeromexico B788 near Santa Maria on Mar 19th 2015, electrical failure
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Old 27th Oct 2015, 19:07
  #2186 (permalink)  
 
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This makes intersting reading:
FAA Is Doing Nothing About Continued Boeing Dreamliner Battery Failures
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Old 27th Oct 2015, 19:36
  #2187 (permalink)  
 
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The whole point of building an approved fireplace and approved chimney around what is euphemistically called a "heat and smoke event" in the Dreadliner battery is to allow the airline(r) to continue to make money while these events continue to occur.

Nothing to see here. Please remember to collect hand baggage before disembarking -- unless using the slides.
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Old 30th Nov 2017, 23:29
  #2188 (permalink)  
 
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Again.

"United B788 near Paris on Nov 13th 2017, main battery overheated"

Incident: United B788 near Paris on Nov 13th 2017, main battery overheated
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Old 1st Dec 2017, 14:13
  #2189 (permalink)  
 
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If it was venting fluid as the report states, then i would say its a lead-acid battery not Lithium as i understood the newer gen a/c use. Did they convert the 787's back to lead-acid after the spate of Lithium fires?
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Old 1st Dec 2017, 14:19
  #2190 (permalink)  
 
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No, they did not.
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