As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE PRODUCING LOW POWER. HIGH MGT ON POWER ASSURANCE CHECK. REPAIRED ENGINE. FOUND MISSING COATING ON STG. 1 NOZZLE TIP PATH WHICH WAS POSSIBLE CAUSE FOR LOW POWER. REPLACED G/G STATOR ASSY, G/G ROTOR ASSY, COMBUSTION LINER AND OUTER BALANCE PISTON SEAL WITH NEW PARTS.