As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 88 - CREW REPORTED NR 1 ENGINE COMPRESSOR STALL ON CLIMB WITH MAX EGT 720+ FOR ONE MINUTE. SHUT DOWN ENGINE, DECLARED AN EMERGENCY AND RETURNED TO FIELD. MAINTENANCE REMOVED AND REPLACED NR 1 ENGINE. THE ROOT CAUSE WAS IDENTIFIED AS THE VSV ACTUATOR WHICH WAS STUCK / DIFFICULT TO MOVE.