American 763 takeoff incident, ORD
Join Date: Nov 2010
Location: Australia
Posts: 18
Likes: 0
Received 0 Likes
on
0 Posts
Don't think it was just the wind blowing that slide around. One of the videos on Twitter has footage where you can hear what may be the port engine still operating as the slides deploy. As it shuts down, the out of place slide moves back into place.
Join Date: Aug 2005
Location: fairly close to the colonial capitol
Age: 55
Posts: 1,693
Likes: 0
Received 0 Likes
on
0 Posts
Shades of Concorde if that were true. I will wait for more information. Sounds closer to an uncontained failure - perhaps another CF6 turbine disk?
Join Date: Aug 2005
Location: fairly close to the colonial capitol
Age: 55
Posts: 1,693
Likes: 0
Received 0 Likes
on
0 Posts
There have been a number of issues with burst turbine discs on the CF6, but I don't recall the -80C2 variant being affected. The big problem has been with the CF6-50, with a few other well known events on the CF6-80A. Two -80A disc failures occurred during ground runs - one ground run failure resulted in the 767 burning to the ground 
(USAir IIRC).
But as noted, I don't recall any such issues with the CF6-80C2 (which was a major redesign of the -80A, not a whole lot in common)
(USAir IIRC).But as noted, I don't recall any such issues with the CF6-80C2 (which was a major redesign of the -80A, not a whole lot in common)
Join Date: Jun 2007
Location: NC, USA
Age: 80
Posts: 92
Likes: 0
Received 0 Likes
on
0 Posts
No, GE90 is a clean sheet design compared to the CF6 - about all they have in common design wise is they are both two spool and made by GE.
There have been a number of issues with burst turbine discs on the CF6, but I don't recall the -80C2 variant being affected. The big problem has been with the CF6-50, with a few other well known events on the CF6-80A. Two -80A disc failures occurred during ground runs - one ground run failure resulted in the 767 burning to the ground (USAir IIRC).
But as noted, I don't recall any such issues with the CF6-80C2 (which was a major redesign of the -80A, not a whole lot in common)
There have been a number of issues with burst turbine discs on the CF6, but I don't recall the -80C2 variant being affected. The big problem has been with the CF6-50, with a few other well known events on the CF6-80A. Two -80A disc failures occurred during ground runs - one ground run failure resulted in the 767 burning to the ground
(USAir IIRC).But as noted, I don't recall any such issues with the CF6-80C2 (which was a major redesign of the -80A, not a whole lot in common)
Join Date: Dec 2010
Location: Middle America
Age: 84
Posts: 1,167
Likes: 0
Received 0 Likes
on
0 Posts
Original posting by tdracer:
Two -80A disc failures occurred during ground runs - one ground run failure resulted in the 767 burning to the ground (USAir IIRC).
Two -80A disc failures occurred during ground runs - one ground run failure resulted in the 767 burning to the ground (USAir IIRC).
An explosion that ripped apart the engine of an American Airlines 767 during a ground test at Los Angeles International Airport was far more dangerous than first reported, new details suggest.
The blast was strong enough to hurl an 18-inch chunk of metal disk more than half a mile -- across taxiways, service roads and two active runways. Airport workers found the piece two days later, not far from the airport's perimeter fence.
The pilots on the incoming flight reported a vibration they couldn’t quite figure out the source other than one of the engines. So rather than remove the suspected engine from the wing for examination, it was decided to attempt to duplicate the vibration on wing.
Workers were still trying to figure out what was wrong with the airplane when they pushed the throttle for both engines to high power, and one of them blew apart.
The explosion outside the American Airlines maintenance hangar on June 2 sparked a small fire that sent a column of dark smoke over the passenger terminals at LAX and drew most of the initial attention. The explosion -- officially an "uncontained engine failure" -- gutted the engine and blackened part of the airplane's fuselage. Part of the failed disk traversed through the fuselage doing substantial damage and into the other engine.
It also blasted pieces of the damaged engine onto a nearby runway -- and, in one case, clear across the southern airfield. The workers who found that piece half a mile away described it as a wedge of metal, 2 inches thick, and heavy.
The aircraft was written off as a total loss.
The problem were tiny cracks that had developed in the edges of the fir trees of the disk holding the stage 1 HPT blades. These cracks became apparent near the end of the life of the disks, but before removal from service.
Join Date: Jun 2001
Location: Rockytop, Tennessee, USA
Posts: 5,898
Likes: 0
Received 1 Like
on
1 Post
A report that this was an uncontained 'fan disc' failure:
At Chicago O'Hare, American 767 catches fire on runway - CNN.com
As in TurbineD's AA 767 news article posted above, the engine parts were flung a half mile away.
At Chicago O'Hare, American Airlines 767 catches fire on runway
By Steve Almasy, Jon Ostrower and Rene Marsh, CNN
Updated 10:11 PM ET, Fri October 28, 2016
(CNN)The right-side engine of an American Airlines Boeing 767 failed Friday during an attempted takeoff, sending debris as far as a half mile and passengers hurriedly down emergency slides onto a runway at Chicago's O'Hare International Airport.
Three sources familiar with the unfolding investigation told CNN the General Electric engine suffered an apparent "uncontained" failure.
The 161 terrified passengers and nine crew members scrambled to safety Friday afternoon after huge flames erupted on the right side of the plane.
The rare, but extremely serious, engine failure sent debris from the engine spewing across the south side of the expansive airfield. Part of the engine's fan disc were found a half mile away on a hangar used by UPS, two sources said.
By Steve Almasy, Jon Ostrower and Rene Marsh, CNN
Updated 10:11 PM ET, Fri October 28, 2016
(CNN)The right-side engine of an American Airlines Boeing 767 failed Friday during an attempted takeoff, sending debris as far as a half mile and passengers hurriedly down emergency slides onto a runway at Chicago's O'Hare International Airport.
Three sources familiar with the unfolding investigation told CNN the General Electric engine suffered an apparent "uncontained" failure.
The 161 terrified passengers and nine crew members scrambled to safety Friday afternoon after huge flames erupted on the right side of the plane.
The rare, but extremely serious, engine failure sent debris from the engine spewing across the south side of the expansive airfield. Part of the engine's fan disc were found a half mile away on a hangar used by UPS, two sources said.
As in TurbineD's AA 767 news article posted above, the engine parts were flung a half mile away.
You are correct, that was a CF6-80C2. I stand corrected...
GE has previously expressed concern regarding the use of PMA turbine blades (i.e. aftermarket blades). Their turbine disc life limits are based on the OEM blades - the PMA blades are typically a different material and significantly heavier than the OEM blades, which throws those turbine disc life limit analysis out the window...
BTW Turbine D, that was the other event I was thinking off (that picture of a partial disc embedded in the other engine is well seared in my memory, although I believe it bounced off the ground - it didn't go through the airplane). I didn't remember the aircraft being a write-off, but it was well used 767 so it probably didn't take all that much damage).
I treat early reports as highly suspect - more often than not they are incorrect, however if the report Airbubba quotes is correct of a fan disc failure, that's really scary. Off hand, I can't remember a fan disc failure since the Sioux City DC-10.
GE has previously expressed concern regarding the use of PMA turbine blades (i.e. aftermarket blades). Their turbine disc life limits are based on the OEM blades - the PMA blades are typically a different material and significantly heavier than the OEM blades, which throws those turbine disc life limit analysis out the window...
BTW Turbine D, that was the other event I was thinking off (that picture of a partial disc embedded in the other engine is well seared in my memory, although I believe it bounced off the ground - it didn't go through the airplane). I didn't remember the aircraft being a write-off, but it was well used 767 so it probably didn't take all that much damage).
I treat early reports as highly suspect - more often than not they are incorrect, however if the report Airbubba quotes is correct of a fan disc failure, that's really scary. Off hand, I can't remember a fan disc failure since the Sioux City DC-10.
Join Date: Jun 2001
Location: Rockytop, Tennessee, USA
Posts: 5,898
Likes: 0
Received 1 Like
on
1 Post
And, I may be reading too much into the report when they say fan disc parts were found half a mile away. It might still be a turbine disc failure causing an explosion that tore up the fan.
Join Date: Oct 1999
Location: Up there
Posts: 202
Likes: 0
Received 0 Likes
on
0 Posts
You can hear the left engine is still running and it is shut down at 0:33.
You can also notice the cabin lighting is still on so electrical power is still applied.
Join Date: Jan 2015
Location: Suffolk
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
The internal video shows MOST of the overhead lockers were closed and very few passengers carrying their hand luggage....I guess when its this obviously serious people understand the need to EVAC swiftly.
I treat early reports as highly suspect - more often than not they are incorrect, however if the report Airbubba quotes is correct of a fan disc failure, that's really scary. Off hand, I can't remember a fan disc failure since the Sioux City DC-10.
The GE fan blades are much bigger now days
obviously we need more info on this one
pics?
Join Date: Jan 2005
Location: USA
Posts: 43
Likes: 0
Received 0 Likes
on
0 Posts
Grabbing luggage
According to Eric Horng (sic) of ABC 7 Eyewitness News TV in Chicago, passenger [Gary] "Schiavone said during the evacuation several passengers remarkably tried to grab their bags out of the overhead compartment. That almost caused people to fall in the aisle.”
Last edited by Setpoint99; 29th Oct 2016 at 16:43.
GE has previously expressed concern regarding the use of PMA turbine blades (i.e. aftermarket blades). Their turbine disc life limits are based on the OEM blades - the PMA blades are typically a different material and significantly heavier than the OEM blades, which throws those turbine disc life limit analysis out the window...
Do a lot of airlines tinker in this way? Any way for the flying public to find out in advance of getting on board?
Great job by the crew and emergency services. The videos show a few people taking carry-ons out with them, altho' the inside video showed only 1 empty o/head locker. Lots of passengers loudly urging others to get off as quickly as possible. Lots getting off without luggage. Maybe passengers are starting to get the message?
On the money.
Loved that post Blade master
as in EK and SQ 777 ground fires - the wind was again in most part here blowing the fire away from the fuselage
there is some bad smoke damage to the rear cabin Right hand side of this AA 767 but I cannot see a major breach or windows melted, the skin has been damaged - certainly lucky again otherwise Manchester would come back to haunt
there is some bad smoke damage to the rear cabin Right hand side of this AA 767 but I cannot see a major breach or windows melted, the skin has been damaged - certainly lucky again otherwise Manchester would come back to haunt