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Another 787 electrical/smoke incident (on ground)

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Another 787 electrical/smoke incident (on ground)

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Old 9th Jan 2013, 18:12
  #81 (permalink)  
 
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glad rag

You beat me to it. The casual fit of the cabling, insuls, and loosely insulated coaxials is not confidence inspiring. I have seen residential knob and tube more squared away...

After two foot long flames, forty minutes of fire, and copious smoke, the EE bay is that clean? It looks sanitized, post fire. The inspector is inspecting the area in front of the battery, not the battery station. The battery's install site is around to the left, and empty. I am surprised the photo was released, if it was thought to be calming, or to minimize the look of damage, I would have to disagree.
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Old 9th Jan 2013, 19:11
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@ Lyman

Well lets wait and see.....but it's the little things, like the screen bond/earth to the left going to the frame, crimp pointing horizontally-no drip loop, this stuff is BASIC basic wiring installation, standards are standards.
Seen it before in my old career, it can point to unskilled/minimally trained labor constructing the barrels, poor [or under pressure QA] signing it off....

And there's more, even in that lo res.

Hope they get all this sorted. Competition improves the breed.
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Old 9th Jan 2013, 20:40
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It would be interesting to know what the adjacent systems ‘boxes’ control – elect distribution / power management, etc, and thus what potential there is for collateral damage from a battery fire ?
Does the elect bay have fire suppression or just containment for ETOPS ?
Even with containment, the assumption that other services will remain available for long periods may be challenged with the evidence from this and previous incidents.
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Old 9th Jan 2013, 21:05
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The ground which caught glad rags eye caught mine. It appears to be a graft, or, occupies the insulated portion of the conductors. It attaches at the aluminum frame rail. Following the rail to its terminus at the bulkhead, we see evidence of fire or arcing. If the ground becomes hot (+/-) then the possibilty for dead short or polarity x suggests a source of lost power, or arcing/heat/ignition? Wherever that rail travels elsewhere? Shouldn't that suggest the need for isolation?

Some day some knucklehead is going to use those red taped connectors for a step.
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Old 9th Jan 2013, 21:41
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An A330 was completely destroyed by fire in her early days. It has nothing to do with the aircraft type. The 787 has outperformed the A380 so far, regarding technical issues.....
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Old 9th Jan 2013, 21:58
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Boeing makes fine airplanes and this one will be fine too. The fire was associated with the APU battery. They will fix the problem. I have had electrical smoke in flight in a 757 so know how it instantly gets your attention.

The Swissair crash near Halifax happened about a year before my situation. I shut down non essential busses for galley, etc immediately before the checklist. Two weeks later our airline changed the checklist to do what I did.

I always considered if necessary shut all generators off if the smoke is uncontrollable because if you can see out the window in VMC conditions you don't need anything. You just want to survive so SOP's can be discussed later at your hearing.
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Old 9th Jan 2013, 22:04
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Self-Vulcanizing Taped Connectors

Some day some knucklehead is going to use those red taped connectors for a step.
That may have already happened, as the battery assembly normally sits right underneath those connectors - the big open area near the NTSB dude's knee.

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Old 9th Jan 2013, 22:07
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It ended up the Galley oven wiring had caused the insulation to burn so what I shut off with no checklist stopped the smoke. Now it is an immediate action.
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Old 9th Jan 2013, 23:36
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Originally Posted by sevenstrokeroll
...the last good boeings were made by douglas
Do you mean the one where they (Douglas) didn't bother calculating what an explosive decompression would do to the floor (and the control lines running under it) with the volume of air inside a widebody?

There's a forest just outside Paris where you can kick over the topsoil and uncover small bits of DC-10 and even tinier fragments of the people who were on that DC-10 because Douglas didn't do their homework. And even then, having been called on not doing their homework, were given a mulligan by the FAA, promised they'd fix the problem and didn't.

Say what you will about Airbus and Boeing, but any mistakes they've made in the last four decades pale in comparison with that.
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Old 10th Jan 2013, 00:46
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dozzy wannabe...glad you have to go back so far to find problems with douglas.

B737...flips upside down and kills everyone due to rudder problems

AB320...settles into trees with top notch test pilots at controls

AB330 lost while pilots can't recover from stall

B767 thrust reverser extends in flight...all lost

B747 improper repair, vertical fin blows off killing over 500 people

Sure there are problems with douglas...but the inherent strength in the single digit (douglas) is wonderful...esp when compared with other planes.

I seem to recall Gen Eisenhower giving credit to the Douglas C47/DC3 or Dakota as helping to win WW2...and that the Dakota was the first plane in the Queen's Jubilee flyover...An American plane.


hmmmmmmmmmmmm
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Old 10th Jan 2013, 00:59
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My Boeings were very trusted by me. They never let me down once. I did not want to fly anthing else.
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Old 10th Jan 2013, 01:40
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Originally Posted by sevenstrokeroll
dozzy wannabe...glad you have to go back so far to find problems with douglas.
OK - I'll respond once and once only, because this is off-topic.

Firstly, I note you go back further to find something particularly good made by Douglas...

B737...flips upside down and kills everyone due to rudder problems
True, but the problem could be mitigated by maintaining a higher Vapp - no such luck with the DC-10 if the floor collapsed.

AB320...settles into trees with top notch test pilots at controls
Untrue - the crew consisted of an AF training captain and two line pilots. The accident itself was largely down to poor preparation by AF.

AB330 lost while pilots can't recover from stall
True, but this was preceded by a very similar crash - West Caribbean 708, which was an MD-82.

B767 thrust reverser extends in flight...all lost
Also possible (manually) on the DC-8, with tragic results.

B747 improper repair, vertical fin blows off killing over 500 people
True - a bad repair, but there was no fundamental problem with the design in the same way there was with the DC-10.

Sure there are problems with douglas...but the inherent strength in the single digit (douglas) is wonderful...esp when compared with other planes.
The BAC 1-11's skin was machined from ally billets, way tougher than any Douglas before or since, and in the right conditions Mother Nature could still rip her tail off.

I seem to recall Gen Eisenhower giving credit to the Douglas C47/DC3 or Dakota as helping to win WW2
And the Gooney Bird was a lovely aircraft, no doubt. But Douglas rested on their laurels and expected their reputation would carry the day, even if they cut a few corners here and there. They were wrong.

Last edited by DozyWannabe; 10th Jan 2013 at 01:42.
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Old 10th Jan 2013, 07:24
  #93 (permalink)  
 
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And here we go!

Oh dear, Dozy's here and this thread is now guaranteed to go on for another five pages.

Dozy will give you all the answers, in his opinion, - yours don't matter.

Time to move on ?
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Old 10th Jan 2013, 10:57
  #94 (permalink)  
 
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Fire is not a metric that screams..?

From Reuters:

(Reuters) - Boeing Co rolled out the Dreamliner's chief engineer to try to quell concerns about the new jet following three mishaps in as many days, including an electrical fire that caused severe damage to a plane.

At a news conference on Wednesday, the engineer, Mike Sinnett, defended the 787, the world's first plastic plane, and said its problem rates are at about the same level as Boeing's successful 777 jet.

Relatively few technical problems prevent 787s from leaving a gate within 15 minutes of scheduled departure time, he said. "We're in the high 90 percents," he said. "We're right where the 777 program was" at this stage.

The prevalence of more significant issues, such as a battery fire, is in the same order of magnitude as previous programs, he added. "There's no metrics that are screaming at me that we've got a problem."

Sinnett explained in detail how the lithium ion battery system that burned on Monday was designed by his team to be safe and prevent smoke getting into the cabin in the event of a fire during a flight. "I am 100 percent convinced that the airplane is safe to fly," he said.

Asked why smoke entered the cabin on Monday, Sinnett said the plane lacked cabin pressure to expel smoke because it was on the ground. In that scenario, "We expect that there would be sufficient time to evacuate the plane safely," Sinnett said.
This Sinnett chappie (reportedly the B787 Chief Engineer) doesn't exactly inspire confidence with his comment that fails to acknowledge that a lithium ion Battery fire is a metric that should be screaming at him and that Boeing does indeed have a critical safety of flight issue with the B787.

Sinnett sounds to me more like a political spin doctor than an engineer.

Hopefully, the real Boeing engineers working for him will provide the corrective action to return the B787 to a safe air transport vehicle and bolster Boeing's reputation for safety before corporate profit.

Last edited by FlexibleResponse; 10th Jan 2013 at 10:58.
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Old 10th Jan 2013, 11:36
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Apparently Mr Sinnett is 787 Chief Project Engineer. So maybe he thinks about whether it's projected to be perfectly safe, rather than it is perfectly safe.
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Old 10th Jan 2013, 11:52
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Sinnett explained in detail how the lithium ion battery system that burned on Monday was designed by his team to be safe and prevent smoke getting into the cabin in the event of a fire during a flight.
No kidding.

As opposed, presumably, to those battery systems that are designed to be unsafe and allow smoke to get into the cabin in the event of a fire during a flight ?

Asked why smoke entered the cabin on Monday, Sinnett said the plane lacked cabin pressure to expel smoke because it was on the ground.
Ah, so when a battery fire occurs when airborne, the differential pressure puts it out ? That's all good, then, no cause for alarm.

Apparently Mr Sinnett is 787 Chief Project Engineer.
Heaven help us.
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Old 10th Jan 2013, 12:05
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"In case of fire, you will find lithium ion batteries located beneath your seat"
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Old 10th Jan 2013, 12:51
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The prevalence of more significant issues, such as a battery fire, is in the same order of magnitude as previous programs, he added. "There's no metrics that are screaming at me that we've got a problem."
I have read & re-read this many times and I have NO IDEA what he is trying to say.

"Prevalence" =
commonness, frequency, regularity, currency, universality, ubiquity, common occurrence, pervasiveness, extensiveness, widespread presence, rampancy, rifeness, profusion, predominance, hold, rule, sway, mastery, primacy, ascendancy, preponderance, popularity

Now, forgetting for the moment engine-related issues, because those are not in the control of an airframer, I cannot remember any previous Boeing programme that has had such serious "issues" as this one.

Right at this moment I would walk rather than risk being on board a 787 in flight.

And STILL no-one can indicate to me exactly how this aircraft can qualify under ETOPS...


Disclaimer, not a pilot, no aptitude.
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Old 10th Jan 2013, 13:14
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Fate is the Hunter remains one of my favorite aviation books almost 50 years after I first read it as a kid. And fate has thrown the aviation world a big bone here.... this battery fire occurred on the ground and not at FL410 over the Aleutian Islands or off Kamchatka. And even with this fire on the ground, it was quickly discovered and dealt with before the entire aircraft could be destroyed, greatly hampering the process of discovering the cause.

If the aviation world and Boeing ignore the gift that fate has presented to it because of the massive financial implications and repercussions, that will be folly to the highest degree.

If I heard today that the 787 fleet was grounded until a solution was found, I would understand perfectly. But at a minimum, these airplanes should be routed so that immediate landings can be made in the event of another fire. As SR111 showed and the AC DC-9 at CVG, even that may not be enough when your ship is burning in flight!

There are only a couple of dozen 787s flying today, and at least two of them have had a fire in the aft electronics bay. Fate has been kind... the test ship was able to land in Texas back in 2010 (crew evacuated with slides) and the JAL ship was between flights and on the ground.

We cannot count on fate being so kind the next time!
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Old 10th Jan 2013, 13:21
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I do agree, RobertS. I think.

Just one small correction:
There are only a couple of dozen 787s flying today,
There are actually 49 in service, in 8 airlines. It's estimated they're doing 439 flights a week.

And of course Boeing is planning to deliver a lot more, as we speak.

A very interesting situation developing.

airsound

Last edited by airsound; 10th Jan 2013 at 13:21. Reason: speling
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