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Boeing making 787 test flight
Associated Press ^ | April 05, 2013 | JOSHUA FREED

Posted on 04/05/2013 1:31:32 PM PDT by oxcart

Boeing said its flight of a 787 on Friday should wrap up the testing for its fix of the battery problems that have kept the plane grounded.

Boeing called the flight "the final certification test for the new battery system." The next step will be for the Federal Aviation Administration to decide whether Boeing's battery fix is good enough for airlines to safely fly it again.

Friday's flight took off from Paine Field in Everett, Wash., according to flight-tracking service FlightAware. It returned one hour and 49 minutes later.

The test was "to demonstrate that the new system performs as intended during normal and non-normal flight conditions," Boeing spokesman Marc Birtel said.

The 787 Dreamliner has been grounded since mid-January because of smoldering batteries, including a fire on the ground in Boston. Boeing has designed what it says is a fix, including more heat insulation and a battery box designed so that any meltdown of the lithium-ion battery will vent the hot gases outside of the plane.

(Excerpt) Read more at hosted.ap.org ...


TOPICS: Business/Economy; Extended News; News/Current Events; US: Washington
KEYWORDS: 787; aerospace; boeing; dreamliner

1 posted on 04/05/2013 1:31:32 PM PDT by oxcart
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To: oxcart

No root-cause fix? Sounds like a patch to me.


2 posted on 04/05/2013 1:40:31 PM PDT by loungitude (The truth hurts.)
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To: loungitude

LOL fixed or not I’m not goin down with 290 other pps on board!
The payload to me seems unreal! Lets save fuel! and pack some more cattle on board!


3 posted on 04/05/2013 2:09:13 PM PDT by Conserev1 ("Still Clinging to my Bible and my Weapon")
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To: oxcart

Just saw it returning to Everett a while ago. Was wondering what it was doing up north - we don’t see airliners larger than 737s up here very often. (Naval airspace here.)


4 posted on 04/05/2013 2:09:48 PM PDT by datura (Vote from the rooftops.)
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To: oxcart
... what it says is a fix ... so that any meltdown of the lithium-ion battery will vent the hot gases outside of the plane.

In other words, there will still be battery meltdown. They haven't fixed the problem yet, but hope the plane is not damaged when it occurs.

5 posted on 04/05/2013 2:30:48 PM PDT by ken in texas (I was taught to respect my elders but it keeps getting harder to find any.)
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To: loungitude
No root-cause fix? Sounds like a patch to me.

The primary fix is to vent the smoke to the outside rather than into the cabin when it catches on fire. Keeps the passengers from getting worried. A few sensors so the pilot will know that it has caught on fire. Some minor hardware adjustments.

6 posted on 04/05/2013 2:54:19 PM PDT by PAR35
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To: oxcart
The only permanent fix is to change the batteries for a different Lithium formula that is less flammable. But that would mean an 18 month grounding while the new battery and charger system goes through full certification.

If the FAA approves this isolation box fix, that would give Boeing the time to work out a better fix.

7 posted on 04/05/2013 2:56:37 PM PDT by Yo-Yo
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By the way, Boeing fan boys who gloated over the Airbus 380 problems a few years ago. My wife just enjoyed a long flight on the 380; only complaints were some barking dogs.


8 posted on 04/05/2013 2:56:50 PM PDT by PAR35
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To: loungitude

The battery plates are spaced a little bit further apart but a true root-cause fix would be a change in battery chemistry. All they did here was make the probability of a battery fire a little less and try to contain it if there is one.


9 posted on 04/05/2013 3:00:30 PM PDT by steve86 (Acerbic by Nature, not NurtureĀ™)
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To: steve86

This reminds me of the thermal runaway issues with NiCad batteries. Everybody went back to lead acid.


10 posted on 04/05/2013 3:10:17 PM PDT by USNBandit (sarcasm engaged at all times)
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