As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ARRIVAL FLT 941-29. CREW REPORTED THE LEFT ENGINE SURGED AND RUMBLED ON THREE DIFFERENT OCCASIONS. ALL THREE AT FLT LVL 28.0. AUTOTHROTTLES ON. ENGINE HAD NO EXCEEDENCES, EGT REPORTED TO BE HIGHER AND CLIMBING DURING ALL THREE EVENTS. ALSO DURING TAXI IN EGT ABOUT 70 DEG HIGHER ON LEFT ENGINE. ENGINE WAS NOT SHUTDOWN. ENGINE REPLACED.