Just so nobody goes away with the idea that Rolls Royce is the only one with engine problems. In the news today is this.
GE says it is working with the carrier, after local reports from Angola said that TAAG grounded its three 777-200ERs after another incident on 23 December involving a GE90.
But back on subject, it seems to me that the only way to know if the C engine still has a design issue is if it comes back on the USA west coast routes with restrictions imposed on 72k takeoffs. This restriction has so far only been mentioned in the infamous Qantas affidavit.