TWA302 wrote:The in cabin video from the pax really shows how the fan blade loss really impacts the balance, even with the engine shut-down. Lots of vibrations/shaking. I can understand the fear they had. Even as a very frequent flyer, I would have been very uneasy too.
Especially 45 minutes out from the most remote archipelago in the world. (Easter Island is the most remote ISLAND in the world, but Hawaii is the most remote archipelago). 45 minutes is an awful lot of drink to cover to get to tierra firma.
JAGflyer wrote:Seeing as the flight was from SFO, I'm going to guess the cowling is somewhere at the bottom of the Pacific. How do they intend to find it seeing as an examination of it would probably help answer questions about what exactly happened.
They could go hunting, after all they do know exactly where the A/C was when the failure occurred. But given that they have the complimentary fracture surfaces for the relevant components, this might not be necessary.
What's interesting to me is that most blade-off events occur when the engine is at high RPM. With both this and the AF A380 that lost the entire fan, I find it a bit odd that the failures occurred at cruise. I guess there could have been a crack slowly propagating its way through the blade until it just gave there. I remember hearing an engineer at RR once say that a single fan blade on the Trent 800 exerts a force on the hub comparable to the weight of a diesel locomotive at 100% N1, so even at 60-75%N1 that you might have at cruise, that's still an awful lot of force, not to mention the forward torque from the aerodynamic forces that the blade is meant to produce (yes, I know this is a PW4000 but it's comparable to a Trent 800).