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Old 10th Feb 2011, 17:30
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Turbine D
 
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Trent-700 ETOPS Failure

Forget

Bearfoil didn't mention this one.

DCA04IA002

It was eerily similar in results to the Qantas QF32 except for the fact the IPT disc didn't burst because it moved back into the stator behind it with the rotor blades contacting the nozzle vanes slowing the disc rotational speed below the burst point. The problem on this engine was coking that clogged the oil venting system and with surrounding heat, caught on fire. The aircraft was on an ETOPS route after departing Miami, Florida.

What sort of engine failure allows a successful re-light?
Fuel starvation, if the cause of starvation can be corrected; Compressor stall, if there is enough time and altitude to preform an air start. Just two examples, there are probably more.
Here is an example of a successful fuel starvation re-light, Boeing 767 with GE-CF6-80 engines:

On June 30, 1987, shortly after a Delta 767 took off from Los Angeles with 205 passengers on board, Capt. John Gilfoil mistakenly moved the fuel-control knobs to the "cut off" position while intending to move other switches on a nearby engine-control panel.

With both engines shut down, the 767 dropped from 2,000 feet to 500 feet above the Pacific Ocean, before Gilfoil restarted the engines and flew on to Cincinnati.

Last edited by Jetdriver; 11th Feb 2011 at 01:40.
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