As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW NOTED REDUCED TORQUE INDICATED ON TAKEOFF. CLIMB TORQUE INDICATED NORMAL. PCU AND FCU WERE CHANGED WITH NO EFFECT. WET TAKEOFF POWER NORMAL. ENGINE WAS REMOVED AND SENT TO ROLLS ROYCE CANADA. TEAR DOWN INDICATES FAILURE OF LAY SHAFT FRONT BEARING ROLLERS AND INNER TRACKS. ALL FILTERS IN OTHER ENGINES IN FLEET INSPECTED WITH NO EVIDENCE OF TROUBLE WITH OTHER ENGINES.