American Declared Emergency

Teller1900

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I found this VERY interesting in lieu of of the BA accident we've been talking about since Friday.

We were climbing out of Hyannis, Ma on a maintenance ferry flight tonight, just a little before 2300. We hear American 100 Heavy check on with BOS Center at FL270 for 350, but they ask to stop at FL330 to trouble shoot something. Of course BOS Center tells them to maintain 330, and asks if they need assistance. They reply "not quite yet, we just need to stop here while we formulate a plan." This made us perk up a bit.

About five minutes later, AA100 calls backs and says they need to return to JFK. BOS Center gives them a turn to PARCH to join the last bit of the Kennebunk Arrival into JFK, and asks again if they need assistance.

"Standby," is all that 100 Heavy says back. Now theres some concern in the voice of the pilot, "is that...what was the intersection for American 100?"

Boston gives him the phonetic spelling and a descent to FL300. It takes the pilots about a minute to read back the turn and descent...it sounds like they have their hands full.

A few minutes pass, BOS Center is busy with a lot of heavies coming in and out of US airspace. Finally, during a break in chatter, he asks American 100 if they need to dump fuel. They respond in the affirmative and BOS Center tells them that they are "cleared to commence fuel dumping, and descend at pilot's discretion to FL180." About 2 minutes later, American 100 tells them that they've started dumping fuel, and are leaving FL 310 for lower. BOS Center asks again, if they need assistance.

"Umm [background noise]...ya" there's some chatter in the background and they release the mic. "Ya, Boston Center, American 100 Heavy, we'd like to declare an emergency now...we're going to have to. We're getting indications of a compressor stall, and they're reporting smelling smoke in the cabin."

Boston acknowledges their declaration and offers them PD to 12,000 now, and a turn direct KBOS. American advises them that they're going to stay high for a little while longer because they still have 40,000 lbs (that's right, forty thousand pounds) of fuel to dump. At this point, they had already been dumping for 10-15 minutes. They weren't joking about being heavy tonight. Another five to ten minutes pass, and BOS Center hands them off to another sector. We put the new freq in our number 2 com and keep listening. BOS Center asks if they'll "need the men and equipment for their landing?"

"Standby," is all American 100 says. There's a lot of noise and chatter in the background. This boys sound really busy. Now a different voice: "American 100 Heavy, ya, we'd like to get the equipment, just in case."

Boston gives them a few more vectors, but pretty soon we're out of range for our radios. Of course, as soon as we got back to Augusta, we looked up American 100 on flight aware. They had left JFK, and only made it as far as the Cape when they got the turn back to New York. The airplane...A Boeing 777-200 bound for London's Heathrow airport.

I realize this may be a stretch, but a BA 777 falls short of the runway because of myserious engine problems, then three nights later another 777 makes it a half hour into their Atlantic crossing before having compressor stalls? Even if they're unrelated, this is bad week for Boeing.
 
http://flightaware.com/live/flight/AAL100

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iconFlightAware > Live Flight Tracker > Track Log > AAL100 > 20-Jan-2008 > KJFK-KJFK
Live Flight Track Log (AAL100)

* Live > AAL100 Flight Status
* Flight > AAL100 > 20-Jan-2008 > KJFK-KJFK

All times are in Eastern time to prevent timezone crossing confusion. See flight status page for local times.

Time Position Ground
speed Altitude
Eastern TZ Latitude Longitude kts Feet
10:12PM 40.62 -73.87 192 2400
10:13PM 40.58 -73.87 244 3100 climbing
10:13PM 40.57 -73.85 269 3800 climbing
10:14PM 40.55 -73.80 283 5300 climbing
10:15PM 40.55 -73.68 302 7600 climbing
10:16PM 40.55 -73.57 302 9600 climbing
10:17PM 40.55 -73.47 302 11100 climbing
10:18PM 40.55 -73.32 335 12800 climbing
10:19PM 40.55 -73.17 377 14600 climbing
10:20PM 40.55 -73.00 413 16900 climbing
10:21PM 40.60 -72.83 446 18100 climbing
10:22PM 40.65 -72.67 458 20000 climbing
10:23PM 40.68 -72.48 472 22100 climbing
10:24PM 40.73 -72.30 494 23700 climbing
10:25PM 40.78 -72.12 521 24900 climbing
10:26PM 40.83 -71.92 532 26200 climbing
10:27PM 40.88 -71.73 543 27800 climbing
10:28PM 40.93 -71.52 570 29100 climbing
10:29PM 40.98 -71.30 587 29800 climbing
10:30PM 41.03 -71.10 587 30800 climbing
10:31PM 41.08 -70.88 592 32200 climbing
10:32PM 41.13 -70.67 606 33000 climbing
10:33PM 41.18 -70.45 606 33000
10:34PM 41.23 -70.23 606 24000 descending
10:35PM 41.28 -70.02 611 24000
10:36PM 41.40 -69.85 585 31700 climbing
10:36PM 41.40 -69.87 566 31400 descending
10:37PM 41.53 -69.78 535 30500 descending
10:37PM 41.55 -69.83 536 30200 descending
10:38PM 41.67 -69.83 468 28700 descending
10:38PM 41.67 -69.87 459 27800 descending
10:39PM 41.77 -69.90 401 26700 descending
10:39PM 41.73 -69.95 403 26300 descending
10:40PM 41.83 -70.03 361 24500 descending
10:41PM 41.87 -70.15 336 24000 descending
11:21PM 40.60 -73.70 131 1500
11:22PM 40.62 -73.73 119 900 descending
 
Interesting that they decided to dump fuel. I know nothing of their max gross weight for landing but once on the way to Tokyo we had to divert to Anchorage. We landed but we landed heavy and had to wait until an inspection of the landing gear was made before we were allowed to continue.

On the compressor stall issue, it seems that there is a gremlin running around targeting 777s. Even with two incidents so near to one another the 777 flies thousands of hours without incident.
 
Interesting that they decided to dump fuel. I know nothing of their max gross weight for landing but once on the way to Tokyo we had to divert to Anchorage. We landed but we landed heavy and had to wait until an inspection of the landing gear was made before we were allowed to continue.

On the compressor stall issue, it seems that there is a gremlin running around targeting 777s. Even with two incidents so near to one another the 777 flies thousands of hours without incident.

Scott, but for the recent London incident, you would never have given a second thought to this one Matt described, and no mention of the hundreds upon hundreds of unremarkable flights 777s complete each day.

If there is any sort of commonality, we'll hear about it and the FAA and other countries' civil aviation authorities will take action. In the meantime, you can rest comfortably assured that the 777 remains among the most reliable aircraft in the commercial airline fleet, and reliability and safety are inevitably linked.

Until someone who knows the planes well (say, a United 777 pilot based in the midwest?) tells me otherwise, I'd fly one any day.
 
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Good write-up as usual Matt. I forwarded to my American FO pal for comment. Will let you know if he has anything.

MM
 
Until someone who knows the planes well (say, a United 777 pilot based in the midwest?) tells me otherwise, I'd fly one any day.

Have no idea who you are talking about Spike, but I am not afraid to get on one. :rofl:
 
Is smoke in the cabin a normal byproduct of compressor stalls?

Regards,
Joe
 
And at what rate does something like a 777 dump fuel? And... Does the stuff evaporate on the way down? I can just imagine sitting in a boat or being at a little leauge game and it starting to rain Jet A.
 
Scott, but for the recent London incident, you would never have given a second thought to this one Matt described,
I still have not given it a 2nd thought. After this weekend I have been giving a lot of thoughts of the care and maintenance of UAL's 767s. Everytime I get on one of theirs things just don't work right. Mysterios flashing lights, the smell of ozone, entertainment systems that go on and off. All I can think of is ancient wiring, cheap offshore maintenance, disgruntled workers, and Swiss Air flight 111. :hairraise::hairraise::hairraise:
 
I just wonder about some poor schmo flying through that cloud of 40 THOUSAND pounds of vaporized jet A and air... and hoping he doesn't have any sort of a short circuit in the wiring to his wing lighting... KABOOM!
 
I just wonder about some poor schmo flying through that cloud of 40 THOUSAND pounds of vaporized jet A and air... and hoping he doesn't have any sort of a short circuit in the wiring to his wing lighting... KABOOM!

Didn't that happen in the movie Stealth? A Sci-Fi air tanker is flying in circles in the flight levels with a broken fuel boom. Then that crazy Tin Man comes and makes it explode.

Everything in the movies it true you know ;)
 
Didn't that happen in the movie Stealth? A Sci-Fi air tanker is flying in circles in the flight levels with a broken fuel boom. Then that crazy Tin Man comes and makes it explode.

Everything in the movies it true you know ;)
Okay, another one for Myth Busters to tackle!
 
Mysterios flashing lights, the smell of ozone, entertainment systems that go on and off.

We had ozone on the way back it was in a newer 757 300. I thought it was nice. Was it not supposed to be there. The music did not work on the flight in the mainland but did work over the ocean. I thought this was planned as well. I do not fly at all so I do not know what is normal or not. The channels would quit and you had to cycle through them when they were turned on. As that was probably my last comm flight I really do not care. That kind of travel is just not for me. I found that going through the check points was kind of a joke. First one I had to take off my belt second one it did not even go off. Cork screw was pulled out of the bag and t hen let through on one flight, next one they never even looked at it. I had some metal trinkets from the Dunes golf course that were packed by a ceramic plate, they pulled out the plate and looked at it and never did see or look at the metal. No mention of batteries, and I had tubes of stuff that I just left in my shaving kit no one ever looked at them. I FELT REAL SAFE THE WHOLE TIME.

Dan
 
And at what rate does something like a 777 dump fuel?

Wait, Wait!!! I can answer that!!!

The 777 will dump at a rate of 5,400 pounds (806 Gallons) per minute from all three tanks and 3,100 (463 Gallons) per minute from just the wing tanks.
 
I just wonder about some poor schmo flying through that cloud of 40 THOUSAND pounds of vaporized jet A and air... and hoping he doesn't have any sort of a short circuit in the wiring to his wing lighting... KABOOM!

Mixture is WAY too lean for that to happen.
 
Here is a picture of fuel being dumped (from a 777 supposedly).

b777.jpg


It's from this site: http://aerospaceweb.org/question/planes/q0245b.shtml which also explains a little something about fuel dumping. I have dumped fuel 3 or 4 times, admittedly from a much smaller airplane, but it isn't that big a deal unless you are the one paying for the fuel. It's actually very pretty, like turning on the airshow smoke.
 
Is smoke in the cabin a normal byproduct of compressor stalls?

Regards,
Joe

Not sure about during compressor stalls, but after the 777 Emergency Landing in Chicago in mid-December, my AA 777 pilot friend told me this:

It's rare but not unusual to get smoke during descent. When you pull the power back on a jet engine, the normal bleed source of cabin air from the engine loses pressure. To compensate, a valve opens which takes air off the engine at a higher compression point. Higher compression gives you more pressure but also much higher temperatures. If there is any oil or other volatile compound on the inside of the valve or the pipes leading from the valve, it will smoke. Usually the smoke is not so bad as to trigger an evacuation, so there might be more to the story here.
 
The 777 is just the airframe. It sounds more like an engine issue.
 
The 777 is just the airframe. It sounds more like an engine issue.


That's what American Airlines is thinking, too. From my 777 pilot buddy:

The following is all the company has put out on this incident. Sounds to me a lot like some of our other engine failures which have involved compressor section parts breaking and passing through the engine. Doesn't sound like the BA 777 at all.


-- A 777 headed from JFK to LHR returned to JFK due to unusual engine vibration and burning odor. Flight declared emergency; landed overweight without incident. A/C out of service. Flight cancelled.

Awaiting DFDR download results for incident evaluation.


Boeing has had a bad week. Did you hear about the Bangkok 747 earlier this month? I hadn't...

http://www.tradingmarkets.com/.site/news/Stock News/1014279/
 
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