Trent Design Issues
That much is clear: there ARE design issues. I am ALMOST certain that engine performance anomalies were evident before this event occurred. The way this aircraft was punted out from London only to turn back over Poland itself tells a tale.
The way forward is to bring back flight engineers. Now before all of you call me every name under the sun please consider the following... This aircarft had no less than FIVE fully qualified operators on the flight deck when this emergency happened.
Two of the hydraulic systems were disabled, the fuel transfer system was buggered and the machine needed all of the runway to finally stop. I suggest that if only TWO were on the flight deck the outcome may have been very different.
Now tell me if the cost of a flight engineers salary would threaten the commercial success of this aircraft.