trickijedi
Posts: 3201
Joined: Sun May 13, 2001 4:35 pm

Contained & Uncontained Engine Failure

Thu Jun 21, 2001 11:20 am

What's the difference between the two?

Its better to be on the ground wishing you were in the air than be in the air wishing you were on the ground. Fly safe!
 
N863DA
Posts: 1140
Joined: Sat Sep 04, 2004 6:36 am

RE: Contained & Uncontained Engine Failure

Thu Jun 21, 2001 11:31 am

Basically, I believe that a contained engine failure is where the engine blows up (discs shatter etc.) but the parts stay containted within the engine cowling.
In an uncontained failure, the cowling merely becomes part of the shrapnel and everything goes wrong - everything flies off in numerous different directions.

FLYDELTA JETS and sail UNITED STATES LINES



N 8 6 3 D A
 
Reggaebird
Posts: 886
Joined: Tue Nov 02, 1999 7:43 am

RE: Contained & Uncontained Engine Failure

Thu Jun 21, 2001 11:33 am

Contained - All broken pieces and projectiles stay within the damaged engine and/or its casing. Engines are designed to do this.

Uncontained - Broken pieces and other debris exits the damaged engine and/or its casing. This can be catastrophic if the debris enters the cabin, severs control lines or punctures fuel tanks.

Thornton
 
B747-437B
Posts: 8777
Joined: Thu May 30, 2002 6:54 am

RE: Contained & Uncontained Engine Failure

Thu Jun 21, 2001 11:40 am

Contained : A big problem

Uncontained : A HUGE F***ING PROBLEM
"The A340-300 may boast a long range, but the A340 is underpowered" -- Robert Milton, CEO - Air Canada
 
777gk
Posts: 1488
Joined: Mon Jun 19, 2000 3:04 am

RE: Contained & Uncontained Engine Failure

Thu Jun 21, 2001 12:08 pm

Uncontained engine failures occur in about 1 in 300 of engine failures, and those odds are even better with newer, stronger engines. When an engine fails uncontained, it always will force the airplane to an abrupt stop or an unscheduled landing, and will almost always make news. Generally, the cowling will stay somewhat intact, with the fan blades fired out through slash-like holes. When these are thrown into the fuselage at such a high velocity, it will cause the cabin to rapidly decompress, and becomes a knife flying into the cabin, killing or severely injuring any passenger in its way. If it strikes a fuel line, it may cause a leak or complete fuel tank failure. In all cases, standard procedure is to shut down the engine ASAP, assess damage, shut down or reroute any systems affected by the damage, and divert to nearest suitable airport.
 
trickijedi
Posts: 3201
Joined: Sun May 13, 2001 4:35 pm

RE: Contained & Uncontained Engine Failure

Fri Jun 22, 2001 2:00 am

Thank you so much, very helpful info!!!

If you wanna get more detailed, please feel free. Thanks.
Its better to be on the ground wishing you were in the air than be in the air wishing you were on the ground. Fly safe!
 
Guest

RE: Contained & Uncontained Engine Failure

Fri Jun 22, 2001 2:46 am

A good example of an uncontained engine failure was the UA Flt 232 DC-10 incident at Sioux City. The GE CF6 engine in the tail suffered an uncontained engine failure where parts of the engine severed the plane's 3 hydraulic lines.
 
GDB
Posts: 12700
Joined: Wed May 23, 2001 6:25 pm

RE: Contained & Uncontained Engine Failure

Fri Jun 22, 2001 3:00 am

Remember after the Air France Concorde crash, some of the immediate speculation that it might have been an uncontained engine failure? We knew it wasn't.
In 1981, a BA Concorde inbound to LHR suffered an engine failure at Mach 2, the cause turned out to be a one-off manufacturing fault in just that engine, the result was a fire so intense it literally cut the engine in two.
After an emergency landing in I think Shannon, after the cowlings were lowered, the engine was hanging there, two halfs dipping toward the decapitated centre.
The titainium between the engines had done their job, the aircraft was otherwise OK.
I've seen the pics, not got them to post unfortunately.

 
Jkat
Posts: 53
Joined: Sat Jun 16, 2001 11:43 pm

RE: Contained & Uncontained Engine Failure

Fri Jun 22, 2001 4:18 am

Wow uncontained engine failures are scary!! How many times does this usually happen in the US each year? Which planes have best/worst records of these types of engine failures?
 
Guest

RE: Contained & Uncontained Engine Failure

Fri Jun 22, 2001 5:33 am

The DC-10 has had a number of uncontained engine failures involving the GE CF6. In the early 1970s a National Airlines DC-10 suffered an uncontained engine failure, where debris from the engine hit the fuselage and a passenger was sucked out. And last year two Continental DC-10s taking off from EWR suffered uncontained engine failures which almost caused a major accident to occur, but pilot skill brought the planes back safely.
 
Guest

RE: Contained & Uncontained Engine Failure

Fri Jun 22, 2001 6:42 am

Last year a US Airways 767 on the ground was doing an engine test run when one of it's two GE CF6 engines came apart damaging the aircraft severely.
 
Jkat
Posts: 53
Joined: Sat Jun 16, 2001 11:43 pm

RE: Contained & Uncontained Engine Failure

Fri Jun 22, 2001 7:54 am

That sucks! Im flying a DC-10-30 in a few weeks! What series of this plane has had those engine failures? -10?-30?
 
Guest

RE: Contained & Uncontained Engine Failure

Sat Jun 23, 2001 12:34 am

Yes, those two series of DC-10s are powered by GE CF6-50 series engines. Only the DC-10-40 series which NW and JAL are the only two airlines that operate it are powered by P&W JT9D engines.
 
Guest

RE: Contained & Uncontained Engine Failure

Sat Jun 23, 2001 12:40 am

In the late 80s, early 90s I believe, a Delta MD-80 suffered an uncontained engine failure from one of it's two P&W JT8D engines. Debris from the engine struck the fuselage killing two passengers.
 
Jkat
Posts: 53
Joined: Sat Jun 16, 2001 11:43 pm

RE: Contained & Uncontained Engine Failure

Sat Jun 23, 2001 3:13 am

So in these uncontained engine failures only a few passengers are injured/killed. Wouldn't there be rapid decompression? When was the last engine failure on a D13?
 
VC-10
Posts: 3546
Joined: Tue Oct 26, 1999 11:34 am

RE: Contained & Uncontained Engine Failure

Sat Jun 23, 2001 3:26 am

TEDSKI

DC10-10's have CF6-6 engines.

Jkat

There is nothing wrong with the DC10, just enjoy the flight
 
Guest

RE: Contained & Uncontained Engine Failure

Sat Jun 23, 2001 4:15 am

It is funny the way you said that VC-10, about the DC-10 now being safe. It had to kill a few hundred people because of poor engineering defects in the DC-10's design to get into service first before Lockheed's L-1011.
 
VC-10
Posts: 3546
Joined: Tue Oct 26, 1999 11:34 am

RE: Contained & Uncontained Engine Failure

Sat Jun 23, 2001 4:37 am

TEDSKI,

What has that got to do with flying on a DC10 today?

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