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NTSB: American Airlines 767 Engine Failure Attributable to Metal Fatigue
The National Transportation Safety Board (NTSB) issued an Investigative Update of American Airlines flight AA383, which caught fire on runway 28R at Chicago O'Hare International Airport after aborting its take-off. (airwaysmag.com) עוד...Sort type: [Top] [Newest]
This is one of the fastest NTSB investigations I've ever witnessed, and the first to conclude a single cause.
2003... Metal fatigue? Who should be surprised if indeed the aircraft still had its original engines. This we do not yet know.
The NTSB will be looking at the inspection records on this engine and when was the last time a full hot section teardown was preformed and when was the last time a full FPI inspection was done on the disk. I suspect either the crack was missed or a internal defect that lead to the crack forming was missed in UT when the disk was made. I was involved with the NTSB investigation of a fan disk failure on a Pratt JT8D-219 back in the mid 90's where the Delta inspector missed a crack that started in the fan disk tie bolt hole and radiated out to the edge of the disk and down about a half inch, It will be interesting to see if the engine work and inspection was done off shore where work practices are sometimes suspect
It used to be, those engine mounts were designed to "melt" and give way, so the airplane structure (in this case, the wing) would remain intact. The old 737 were that way, and even the -10 and -30 DC-9. I'd feel better knowing an engine fire would cause "release" of the engine, rather than it remain burning on the wing and near those fuel tanks. Can anyone with 767 experience, that has real knowledge comment on why that engine is still on the wing, even after that much fire? It doesn't inspire confidence in the newer engineering designs to see this.
WOW, Gayla Maas, Are you from the Netherlands?????
My great grandparents immigrated, so I may have relatives there.
Thanks for answering so quickly.