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Boeing 787 Makes Emergency Landing

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Boeing 787 Makes Emergency Landing

Old 4th Dec 2012, 20:30
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Boeing 787 Makes Emergency Landing

United Dreamliner makes emergency landing in New Orleans - chicagotribune.com

Anyone know more about this?
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Old 4th Dec 2012, 21:50
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reported electrical problems.


It was bound to happen sooner or later.
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Old 5th Dec 2012, 00:41
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Not clear whether it was an actual emergency or a precautionary landing. I'm leaning toward precautionary...
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Old 5th Dec 2012, 00:49
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WSJ version

The current article on the Wall Street Journal web page states that the flight crew requested by radio for responders to check for discoloration or dripping plastic near the aft electrical equipment bay.

It also asserts that the current investigation focus is on a generator.

Lastly it quotes an airline spokesman to as saying in an e-mail "As you can imagine, we're going to let the technical teams do their jobs and not speculate. We're not providing details about the event at this point in time as the teams are still working to understand it."
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Old 5th Dec 2012, 03:02
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"The current article on the Wall Street Journal web page states that the flight crew requested by radio for responders to check for discoloration or dripping plastic near the aft electrical equipment bay"

Deja vu....
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Old 5th Dec 2012, 03:15
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The current article on the Wall Street Journal web page states that the flight crew requested by radio for responders to check for discoloration or dripping plastic near the aft electrical equipment bay
Loose lips sink ships...
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Old 5th Dec 2012, 03:22
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Maybe its in the QRH.
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Old 5th Dec 2012, 03:24
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so in flight incidents should not be reported?
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Old 5th Dec 2012, 03:33
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This would appear at first blush to be a second emergency landing for problems relating to the same electrical closet in the fuselage, aft, portside.

I hope it isn't.
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Old 5th Dec 2012, 03:40
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Originally Posted by Lyman
Maybe its in the QRH.
Got my copy of the 787 QRH right here:

Electrical Issues of Unknown Origin
Hop onto Maintenance on the VHF and pass all symptoms, as well as preferred troubleshooting/rectification actions, in as much detail as possible, so the whole world knows what might or might not have happened:
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Old 5th Dec 2012, 03:52
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I think this disclosure issue will quickly pass. Who remembers that 447's private ACARS were tipped to the Press?

Last edited by Lyman; 5th Dec 2012 at 04:41.
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Old 5th Dec 2012, 05:25
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Hell the Daily Mail have got hold of the story. But give them their due they have printed some good pics instead of the usual 'terror at 10 feet!

United Dreamliner flight makes emergency landing due to mechanical issue one month after airline introduced new plane | Mail Online
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Old 5th Dec 2012, 22:54
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One news report yesterday claimed that a flight tracking site showed a "sudden loss of power, rapid loss of altitude, and sudden turn".

I thought that's what you were supposed to do when you deviate!
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Old 5th Dec 2012, 23:16
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....and fuel leaks

From Avweb.
Fuel Leaks Reported In Dreamliners

The FAA has ordered inspections of Boeing 787 aircraft after improperly installed fuel line hardware was discovered on in-service aircraft and on the production line. The inspections were ordered after two airlines reported fuel leaks on their Dreamliners. The agency gave airlines a week to check the lockwires and another two weeks to look at the connectors. Boeing said half of the 38 airplanes that have been delivered have been checked and they're working on a production-line fix.

"Certainly we would prefer not to have workmanship issues," Boeing spokeswoman Lori Gunter told the Seattle Times. "But the system finds them, we report them and we develop a solution." The inspections came as the FAA was investigating an emergency landing of a United Airlines 787 in New Orleans on Tuesday. The aircraft was on its way to Newark when it diverted to New Orleans with an undisclosed "mechanical problem." Gunter said the diversion had nothing to do with the fuel issue, however.
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Old 6th Dec 2012, 00:16
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I believe that in normal configuration, only 4 of the ship's 6 generators would be turning. The 2 on the APU would not be. So, one of the 4 engine-driven gennies failed, and caused multiple EICAS messages... prompting a diversion. Wait 'till it happens mid Pacific...
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Old 6th Dec 2012, 00:56
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The fuel AD. Not to be associated with this electrical issue and emergency landing. issued today, I believe.

************************************************************ **

[4910-13-P]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2012-1220; Directorate Identifier 2012-NM-208-AD; Amendment 39-17277; AD 2012-24-07]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; request for comments.
SUMMARY: We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 787-8 airplanes. This AD requires ensuring that lockwire is installed correctly on the engine fuel feed manifold couplings. This AD also requires inspecting the assembly of the engine fuel feed manifold rigid and full flexible couplings. This AD was prompted by reports of fuel leaks due to improperly assembled engine fuel feed manifold couplings. We are issuing this AD to detect and correct improperly assembled couplings, which could result in fuel leaks and consequent fuel exhaustion, engine power loss or shutdown, or leaks on hot engine parts that could lead to fire.

************************************************************ **

The public report is that a generator failed. That is not cute, but machinery can go south. The troubling, no disturbing thing is that the load failed to re distribute, and the a/c was without power, causing an emergency landing. The selection of Louisiana is a mystery, if not an extreme emergency, why not return?

Losing a generator is not entirely unlike losing any part of a redundant system. Even an engine. Losing an engine on a twin is quite manageable, it better be.

One is not able to "err on the side of safety" and land immediately on routes this a/c is proposed to serve, this is not flight test. Reports of "Smoke", "Dripping plastic", and "aft electrical equipment bay" indicate an urgent need to stop the flight and land. There are three of these a/c in service. AD, and an unrelated emergency landing. Now an opportunity to vet a Public Relations effort.

Hi TURIN "There are three of these in service." (with UNITED)

....my bad

Last edited by Lyman; 9th Dec 2012 at 18:26.
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Old 6th Dec 2012, 22:19
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There's a few more than three in service, but I take your point.

One genny off line should not be a major drama.
Summat is up!!
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Old 7th Dec 2012, 06:44
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Originally Posted by Lyman
The troubling, no disturbing thing is that the load failed to re distribute, and the a/c was without power, causing an emergency landing..
Lyman -- Where did you get this information that the load failed to redistribute and there was a loss of power? I have not seen this. Have you got a source?

Last edited by Diamond Bob; 7th Dec 2012 at 06:44.
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Old 7th Dec 2012, 11:27
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Dripping plastic? This does not instill much confidence in the airframe integrity. I will stick to a metal aeroplane anyday.
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Old 7th Dec 2012, 13:28
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Diamond Bob


"Quote:
Originally Posted by Lyman
The troubling, no disturbing thing is that the load failed to re distribute, and the a/c was without designed power, causing an emergency landing.."


Let's be clear. The initial report had the genesis of the emergency in the aft EE bay. That would be the second time this location has caused an immediate landing, the first time in Laredo.

No following Internal Press have disabused this as the cause here, the EE bay.



With six generators available, the loss of one should never cause a forced landing. Yet we see that the reporting is targeting a "mechanical issue". Mechanical includes electrical. If the load had been re distributed to solve the electrical issue, why not continue? What is the systems reversion that follows the loss of a generator? Evidently one that did not work?

A precautionary landing? That is absurd. There is no such animal in overwater operations. The landing was immediate and unavoidable, that is the conclusion.

I pray the problem is not as serious as it seems. Far from solving an "appearance problem" with the public, a lack of information and even misdirection only makes perception more murky.

Have you found the original thread here on PPRuNe? The discussion about the fire on the flight test that caused the program to stop for a time?

There was professional concern about safety v/v burning resin, and the lack of a sacrificial airframe in fire tests.

Last edited by Lyman; 7th Dec 2012 at 18:05.
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