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BA 777 on fire in Las Vegas

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BA 777 on fire in Las Vegas

Old 16th Sep 2015, 01:22
  #461 (permalink)  
 
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Aircraft structural aluminum alloys are heat treated/aged metal.
If the wing box was heated excessively, the metal could lose strength without being holed.

The fuel on the other side of the panels acts to absorb heat from the metal and initially will limit the temperature rise, but when the fuel gets hot enough, there may be a loss of heat transfer as boiling of fuel begins and the metal can then begin to cook.

They will probably do hardness tests of the wing skin to evaluate its strength in the heat affected areas.
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Old 16th Sep 2015, 06:43
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Originally Posted by HeathrowAirport View Post
Damage isn't as bad as first thought, although not an official word it's likely to be repaired.
A 16-year-old -200 ?

I'd put money on it being towed to a remote corner of McCarran and quietly dismantled. Time will tell.
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Old 16th Sep 2015, 10:59
  #463 (permalink)  
 
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Having looked at the seriousness of the fire in this one, if that had happened on immediate climb out, I think the odds would have been against them getting back.

The way the crew dealt with this shows such positive traits in BA's CRM culture. Hats off to pilots and cabin crew
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Old 16th Sep 2015, 14:15
  #464 (permalink)  
 
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One strategy: Jack up the nameplate, install a new airframe.
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Old 16th Sep 2015, 15:27
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Well when G-YMMM was w/o BA was left with only one spare covering LHR/LGW (based from LHR) 772 operations. Cost is irrelevant, the long-term impact of having an operation run ragged isn't cost efficient in the long-run.

What @Machinbird says, Boeing will Material test the aircraft. G-VIIO had a D Check in Cardiff last year, and B check end of last Year. According to The BA Source. But the problem isn't the wingbox, it's the wing-spar that was exposed in this case.
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Old 16th Sep 2015, 18:10
  #466 (permalink)  
 
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Windsheer:

[I]"Having looked at the seriousness of the fire in this one, if that had happened on immediate climb out, I think the odds would have been against them getting back.

The way the crew dealt with this shows such positive traits in BA's CRM culture. Hats off to pilots and cabin crew"[/
I]


Whole heartedly agree with you first paragraph....

Great action from the crews, yes, but let's not forget the LAS ARFF and Airport Operations who also played a critical part in all this.

One of the key factors involved in a positive outcome for this incident was the runway being used (7L, intersection A8 - look at the airport diagram for KLAS/LAS). It is in close proximity to the fire station and that's why everyone was able to get on scene in about a minute - well inside the FAA-mandated time of three minutes. And the fire was extinguished in another 45 seconds. Where seconds matter, there is no doubt that location was a factor in the incident.

Footnote: GE engine now removed and en route to a GE facility. Airframe remains at the LAS cargo ramp............
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Old 16th Sep 2015, 18:46
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The event aircraft shows as over 84,500 hours and 12,700 cycles.
Given the residual value of the systems, avionics, and remaining engine it wouldn't take much of a repair bill to exceed the value of the airframe.
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Old 16th Sep 2015, 20:37
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Having looked at the seriousness of the fire in this one, if that had happened on immediate climb out, I think the odds would have been against them getting back.
They were stationary on the ground with a five knot prevailing wind from the left blowing the fire against the fuselage. Airborne the relative wind would have been ~150-200 knots blowing the fire aft along and through the engine. I doubt very much they would have had any fuselage damage at all. That's not to say they wouldn't have had a serious problem, just not the fuselage damage that resulted in this case.
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Old 16th Sep 2015, 23:11
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Bleve - exactly
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Old 17th Sep 2015, 01:29
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QANTAS went through a period of uncontained engine failures a few years ago on its RR powered B744s. A modification was unable to be carried out as they had closed their RR engine shop and every other facility in the world was busy doing work for other airlines.

Aircraft were kept flying with a known risk, could it be something similar here ?
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Old 17th Sep 2015, 01:55
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THIS SIDE LOOKS NORMAL

NTSB has published a picture of the left side of the failed engine following removal.


It would have been nice of them to show the other side so we can see the holes in the case and the fuel manifold and have something factual to talk about.
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Old 17th Sep 2015, 13:09
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...have something factual to talk about
Don't let that stop you.
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Old 17th Sep 2015, 17:08
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alexb757

Great action from the crews, yes, but let's not forget the LAS ARFF and Airport Operations who also played a critical part in all this.
Yes, but I think these are two separate things.

The fire service did a very good and prompt job, but it was ultimately the a/c crew that saved loss of life through the good decision to get everyone off when they did. Much more of a delay in that decision could have been disastrous through a smoke filled fuselage, regardless of whether fire crews were present.

Hats off to all!!!
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Old 17th Sep 2015, 19:01
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Some comments that the engine on this aircraft sas not subject to the AD referred to earlier in this thread: Failed Engine Type On BA 777 Was Subject To 2011 AD | Aero-News Network
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Old 17th Sep 2015, 19:28
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Some comments that the engine on this aircraft sas not subject to the AD referred to earlier in this thread: Failed Engine Type On BA 777 Was Subject To 2011 AD | Aero-News Network
Nevertheless this latest incident shows what can happen, whether it's the same cause or not might or might not be important.

It's not good to have yet another new problem requiring different fixes so that is the news to follow in the future.
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Old 17th Sep 2015, 21:01
  #476 (permalink)  
 
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Miracle on the Hudson

@ILS27LEFT, I'm pretty sure there were a similar number of heroes in USAir 1549. An experienced captain, calm and methodical F/O, effective Cabin Crew, responsive and insightful ATC and both a coordinated and ad hoc emergency response comprising multiple agencies and selfless civilians in the middle of a city of 20 million people enduring a horrible snow storm..
This BA crew did a great job, clearly lessons from Airtours learned, but it's ironic that, in the age of LOFT and SBT this very scenario considered laughably simplistic and unlikely. How cheated (relieved) if in your next Sim ride you got an engine fire at 80KIAS in day VMC followed by a first class deadhead home and a book deal :-)
Funny aside; i was riding home in a UPS DC8 a few years ago and #2 let go at 500'.
On hearing the fire bell The F/O flying turned to the FE and said 'Why are you testing that NOW?'!
neilki.
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Old 18th Sep 2015, 21:35
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Given the residual value of the systems, avionics, and remaining engine it wouldn't take much of a repair bill to exceed the value of the airframe.
BER is where it looks like it will be.
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Old 19th Sep 2015, 02:49
  #478 (permalink)  
 
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To Be or Not To Be???

For the next few days a group of Boeing engineers and BA reps evaluating the airfroame/hull then it's off to meetings with Lloyds to crunch the numbers.................
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Old 19th Sep 2015, 20:55
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I would have thought they wanted a meeting with GE.
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Old 20th Sep 2015, 15:38
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BER is where it looks like it will be.
What is BER? Thanks.
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