FAA Grounds 787s
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With all the wisdom and engineering knowledge (nudge, nudge, wink wink) on this forum, I suppose the members could design an outstanding aircraft themselves...
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torque the bolt head from behind the flange?
The bolt heads are facing out.
You seem hell bent on trying to stir up concern when none is warranted.
Surely you don't honestly believe the engineers gave no thought to the assembly and maintenance considerations of the enclosure?
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With all the wisdom and engineering knowledge (nudge, nudge, wink wink) on this forum
The bolt heads are facing out
and I will get new spectacles tomorrow
Last edited by FlightPathOBN; 24th Apr 2013 at 18:53.
Pedant mode on...
Surely, one would torque tighten the nut, not the bolt.
Surely, one would torque tighten the nut, not the bolt.
Or are they captured nuts?
My eyes need testing too.
My eyes need testing too.
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Since it does not appear they are using washers, one would apply the torque value to the bolt, not the nut.
Last edited by FlightPathOBN; 24th Apr 2013 at 21:56.
thread drift (torque values)
It depends. If the materials under both the nut and the bolt are the same, it will (mostly) matter little. If the materials are different, then you need to read the manual about bolt / nut placement and which is 'torqued'.
Just for reference, Mitsubishi reckons a strong shock, eg battery dropped from a height of one meter in the testing process is enough to cause overheating. I wonder if Boeing and Yuasa have looked into this behind the scenes. (Hard landings?)
Mitsubishi to recall hybrids for battery problem -NHK WORLD English-
Mitsubishi to recall hybrids for battery problem -NHK WORLD English-
Last edited by jolihokistix; 25th Apr 2013 at 03:12.
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FAA Lifts 787 Grounding
The FAA today has formally lifted the AD grounding the 787, allowing UA to resume revenue flights at their discretion. EASA, JTSB and other agencies are expected to follow shortly:
FAA clears Boeing battery fix, ending 787 flight ban | Reuters
FAA clears Boeing battery fix, ending 787 flight ban | Reuters
The FAA today has formally lifted the AD grounding the 787
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Dave,
Actually no, United Airlines says it flew one of its 787s to a Boeing facility in San Antonio on Tuesday for the battery fix it needs to resume flying.
United (UA) #6850 ? 23-Apr-2013 ? KLAX - KSKF Flight Tracker ? FlightAware
So your are only allowed to fly a grounded aircraft when you want to.
On a side note, today the FAA estimated the cost to fix each ac is $465,000. Quite the box
Actually no, United Airlines says it flew one of its 787s to a Boeing facility in San Antonio on Tuesday for the battery fix it needs to resume flying.
United (UA) #6850 ? 23-Apr-2013 ? KLAX - KSKF Flight Tracker ? FlightAware
So your are only allowed to fly a grounded aircraft when you want to.
On a side note, today the FAA estimated the cost to fix each ac is $465,000. Quite the box
Last edited by FlightPathOBN; 25th Apr 2013 at 19:16.
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On a side note, today the FAA estimated the cost to fix each ac is $465,000
That's just the costs of getting the coke machines flown out to remote...
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Op-Ed piece in today's NY Times from James E. Hall, James E. Hall, a safety and crisis management consultant, who was chairman of the National Transportation Safety Board from 1994 to 2001.
http://www.nytimes.com/2013/04/26/op...t-the-faa.html
...the F.A.A.’s recent decision to approve Boeing’s plans to fix the lithium-ion battery seems shortsighted and represents a complete failure of government oversight.
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From the NY times article: http://www.nytimes.com/2013/04/26/op...t-the-faa.html
I think I will be making an effort to avoid 787s until they've clocked up a significant number of hours without any battery fire/smoke incidents (contained or not) - if any occur it'll be until they fix the root cause.
OC619
Boeing initially estimated that there was the potential for one battery failure incident in 10 million flight hours. As it turned out, smoke and fire broke out in batteries on two separate 787’s in just the first 52,000 flight hours.
OC619
Japan gives OK to resume flights, but this bit seems interesting:
Japan allows airlines set to resume 787 flights - AviationPros.com
Japan is requiring ANA and JAL to take additional safety measures, including installation of a system that allows monitoring of battery voltage on the ground and test flights of all 787 aircraft. A first test flight is expected Sunday.
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Glad to see you won't be riding on 787's soon. What will you be riding that makes you feel secure, safe and without being in danger. How are getting to the airport BTW?
Last edited by Spooky 2; 26th Apr 2013 at 21:05.