From another thread, EASA are considering an AD on Trent 800 for Airbus 330. It was only a matter of time. The FOHE inlet/interface is being altered for 777 equipped a/c. A Northwest 777 had rollbacks over the Rocky Mountains subsequent to a suspicion of icerestricted FOHE's. This following BA038's short arrival at LHR.
Odd that on this large thread the possibility of engine rollbacks hasn't gotten much interest. I believe NWA incident occurred at 35,000 feet.
Ice is Ice.
For clarity, the EASA is considering extending the AD to include Trent 700 and 500.