Whats CONTAINED FAILURE ?
 

Reading below article came across terminologies

CONTAINED and UNCONTAINED FAILURE !

What do they mean ?

US FAA investigates Continental 777 engine failure at Newark

If bits come off and clump you in the head, it's uncontained. If the bits stay inside, it's contained.

When referring to engine failures it means the rotating parts such as turbine blades/discs have or have not been spat out by the engine in question. I remember a thread on here not so long ago with pictures of an uncontained failure. Try searching engine failures..........

Uncontained; :eek:

http://www.flightglobal.com/assets/g...x?ItemID=16268

Ric

Did it really come in BIG CAPITAL LETTERS and an exclamation mark?

Thanks for your replies

Zenj.
Have a look at the Co B777 thread on Rumours and News, far better explanation on that thread.:ok:

Uncontained Failure
 

Look up Delta Airlines MD-80 at Pensacola, Florida Sunday July 6, 1996. They had an uncontained engine failure on takeoff and debris entered the rear cabin killing a mother and her daughter and injuring several other pax. NTSB Report here;

http://www.ntsb.gov/ntsb/GenPDF.asp?...96MA068&rpt=fa

"contained" failures in the FAR/JAR part 33 refer to engine casings integrity.

Uncontained failures FAR/JAR part 25 refer to any source of engine debris that might disable the aircraft. This does include the liberation of debris out of the front and back of the engine.

The sublety is in which regulation applies and to what manufacturers' design.

When it comes to serious aircraft damage there is no sublety and who cares who is at fault, just fix it.

The news media never sees these shades of grey and react just to broken bits alone, thus the so called on-off light switch approach to headlines.