As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NUMBER 3 ENGINE HIGH ALTITUDE STALL DURING STEADY STATE OPERATION IN LEVEL FLIGHT. ALTITUDE 33,000 FEET. ENGINE OPERATION AFTER STALL NORMAL. *S/D* DURING BORESCOPE FOUND 13TH STAGE HPC BLADE DISTRESS ON THE NUMBER 3 ENGINE. REMOVED AND REPLACED ENGINE WITH S/N 696574. FURTHER INVESTIGATION DURING SHOP VISIT.