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re: nevermind
Posted on 9/21/14 at 10:05 am to 777Tiger
Posted on 9/21/14 at 10:05 am to 777Tiger
quote:
due to poor hydraulic design, and a cracked fan blade that had been outsourced for rebuild, but was pencil whipped and returned for service,
Wrong. The number two engine had a titanium fan disc come apart caused by an inadequate forging by the disc manufacturer. A titanium inclusion which didn't melt out during the forging of the disc (approximately 1/64" in diameter) caused a service induced stress crack which propagated during the life of the disc. Overhaul facility missed the crack at last overhaul and disc disintigrated during flight when crack reached fan blade root area. Subsequent uncontained explosion resulted in fan blade/ blades sheering all hydraulic lines in tail of a/c.
GE and the overhaul facility in litigation for many yrs over cause of disc failure.
GE saying overhaul missed crack during FPI inspection.
Overhaul responded cause was GE missing inclusion at UT inspection of disc at forging facility.
Posted on 9/21/14 at 10:15 am to AUTimbo
pretty much what I said, the blade was sent to an cheap, fly by night, independent contractor for refurbish, the necessary inspections and work were not done, and the blade returned to service, of course when you drag it into the court room, fingers are going to be pointed at everyone that can conceivably be implicated, I'm sure the plaintiffs tried to assign guilt on the estates of Wilbur and Orville
ETA: the loss of all hydraulic systems, and subsequent hull loss, due to a relatively minor mechanical malfunction, was especially tragic because a similar crash is May, '79 of American flight 191, where the #1 engine failed/separated, going over the wing shortly after rotation, the hydraulic lines were severed ,causing the slats on the left wing to retract and the aircraft rolled 112 degrees at low altitude and crashed, the engine out profile was nailed, which unfortunately reduced the already minimal chance of recovery, these design flaws were eventually corrected and the DC-10 became an awesome airplane after the loss of a few hundred lives, there was one more similar crash for pretty much the same reason, but essentially same story, small malfunction, loss of hydraulics, airplane unflyable, people die
ETA: the loss of all hydraulic systems, and subsequent hull loss, due to a relatively minor mechanical malfunction, was especially tragic because a similar crash is May, '79 of American flight 191, where the #1 engine failed/separated, going over the wing shortly after rotation, the hydraulic lines were severed ,causing the slats on the left wing to retract and the aircraft rolled 112 degrees at low altitude and crashed, the engine out profile was nailed, which unfortunately reduced the already minimal chance of recovery, these design flaws were eventually corrected and the DC-10 became an awesome airplane after the loss of a few hundred lives, there was one more similar crash for pretty much the same reason, but essentially same story, small malfunction, loss of hydraulics, airplane unflyable, people die
This post was edited on 9/21/14 at 11:52 am
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