Holy! Looks like part of the engine cowling. I haven't seen a Boeing 777 up close but normally the cowling will be riveted in parts, or use quarter turn screws to hold it down. Looking at this, it appears it might be the leading edge of the inlet, so it would probably be riveted on.
Update: seems what happened is engine suffered a major failure, causing it to explode to a degree. Seems entirw cowling was forced off and was scattered around the town below where engine exploded.
It was a blade out failure which was contained by the engine. The vibration and damage from the imbalance probably dislodged the cowling which contributed to the failure.
The reality is that engines are designed to contain a catastrophic failure. If they didn't, this would have brought down the entire aircraft.
It's not that concerning since this is a success of the engineering that goes into these engines, so I'm not sure what u/TwistedSister is trying to get at here.
The concerning thing is that the PW4077 engines have suffered a couple of other blade-out events like this which I think probably warrants grounding the fleet long enough to figure out why there has been more than one failure of this type.
Holy! Looks like part of the engine cowling. I haven't seen a Boeing 777 up close but normally the cowling will be riveted in parts, or use quarter turn screws to hold it down. Looking at this, it appears it might be the leading edge of the inlet, so it would probably be riveted on.
Update: seems what happened is engine suffered a major failure, causing it to explode to a degree. Seems entirw cowling was forced off and was scattered around the town below where engine exploded.
It was a blade out failure which was contained by the engine. The vibration and damage from the imbalance probably dislodged the cowling which contributed to the failure.
The reality is that engines are designed to contain a catastrophic failure. If they didn't, this would have brought down the entire aircraft.
It's not that concerning since this is a success of the engineering that goes into these engines, so I'm not sure what u/TwistedSister is trying to get at here.
The concerning thing is that the PW4077 engines have suffered a couple of other blade-out events like this which I think probably warrants grounding the fleet long enough to figure out why there has been more than one failure of this type.
Clearly they're all overreacting.
Well, over the last week, the FAA grounded everything flying PW4077 to determine the source of the blade out events, much as I predicted.
So yes, I think the thread was largely an overreaction since the engine didn't explode but the failure was contained (which it was engineered to do).
In all likelihood, there were cracks forming in the fan blades due to manufacturing faults.
Stop overracting. It's only an engine.