As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE FLIGHT LT ENG LOST PARTIAL THRUST, MAX THRUST ACHIEVABLE WAS 1.6 EPR. WITH THROTTLE SPLIT FL320, ACTUAL PROBLEM WAS WITH RT ENG PROVEN ON POWER RUN TEST 9. REPLACED RT ENG FFG IAW AMM 73-21-01-004-001-R-04-4. ROTABLE PARTS CHANGE WAS INDICATED TT 1643444 SN OFF 02450 GOVERNOR, FUEL OFF 53-7321-9-0001 2450 ON 53-7321-9-00014619.