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Kinda. While the 2018 incident was "contained", it still resulted in damage to the fuselage.

"Two small punctures were found in the right side fuselage just below the window belt with material transfer consistent with impact from pieces of an engine fan blade"

(From the link in parent to this thread https://avherald.com/h?article=4b4e8ca7&opt=0)



Not 'kinda'. Debris exiting the engine housing with sufficient energy and in a direction that leads to damage of other systems is the literal definition of an unconfined engine failure (i.e. it can spit as many parts as it wants to out the exhaust). There is a band of armour around the plane of the fans that should prevent any blades leaving the engine perpendicularly. If there was fuselage or wing damage from debris, that was an unconfined failure and would require investigation as a major fault.

However, loss of the shroud doesn't necessarily imply there was a confinement failure. Damage to the shroud during the event can easily lead to the cowling shedding aerodynamically, which is also part of the design: the last thing you need is more drag on the dead engine side. We can't tell which that was in this case, but it's important that we do---the design criteria specifying that the aircraft can be safely recovered from a catastrophic single engine failure during any stage of flight would assume the failure is confined to the engine.




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