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A Qantas Boeing 747-400, registration VH-OJP performing flight QF-74 (dep Aug 30th) from San Francisco,CA (USA) to Sydney,NS (Australia) with 212 passengers and 19 crew, was climbing through FL250 about 20 minutes into the flight, when the #4 engine (RB211, outer right hand) suffered an uncontained failure ripping a large hole into the outer engine cowling approximately abeam the turbine rotors. The crew shut the engine down, descended the aircraft to FL200, dumped fuel overhead the Pacific Ocean and returned to San Francisco for a safe landing about 80 minutes after departure.
Qantas said, the engine needs to be replaced.
Wahnsinns TroubleshootingQantas said, the engine needs to be replaced.
Zitat:Da werden Erinnerungen wach:
http://lafd.blogspot.com/2006/06/boeing-767-engine-fire-causes-major.html
Das wäre ja auch ein Ding wenns Routine wäre.Uncontained engine failures sind trotzdem nicht Routine.
SEEMS TO BE ist wohl der wichtigste passus, weil der offizielle NTSB-Report von Ermüdungsrissen in der HPT Turbinentrommel ausgeht und nicht von entzündeten Kerosindämpfen.The engines is a CF6-80C2 and looking at the photos seems to be a case of explosion in the combustion chamber zone.