As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WOULD NOT ROTATE FOR ENGINE DAILY RINSE. TRIED TO TURN COMPRESSOR AND IT WAS VERY HARD TO TURN. REMOVED N6 ACCY TO CHECK FOR POSSIBLE CAUSE AND COMPRESSOR WAS STILL TIGHT. BORE SCORED COMBUSTION CHAMBER AND 1ST STAGE BLADES AND FOUND NO ABNORMALLIES. SUSPECTED COKING PROBLEM ON FUEL NOZZLE. (K)