Not to be melodramatic, but as it has now been essentially confirmed to be a blade-off uncontainable engine failure, is anyone else thinking about UA 232?
UA328 is a fan blade off situation. There is a containment structure designed to handle single blade off events. Clearly this was two blades off and something escaped that containment, but it's not clear how much energy it had when it impacted that fairing, which is not a strong structure.
Regardless, IMO a grounding is justified. Time to take a good look at the entire fleet and make sure there is no undetected issue to be resolved.
UA232 was the failure of the fan disk itself. The chunk that fell off had many blades attached, so it had much more mass thus much more force (F = ma).
Ref: https://en.wikipedia.org/wiki/United_Ai ... _component
That case resulted in extensive hydraulic damage largely due to the energy of the pieces and the concentration of the hydraulic runs:
The link addresses the shortcomings that were found in UA's inspection processes and McDD's design. Time will tell if any similar issues will be found. I would not jump to conclusions.
How the heck were they able to get the gear down with that damage?
Seems it was the usual way, hydraulic actuators, right?
Maybe the damage was only skin deep.