As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRTURN BACK, DECLARED EMERGENCY, ON CLIMB-OUT NR 2 ENGINE SURGED BETWEEN 77 PERCENT AND 88 PERCENT N1. RETURNED TO BDL WITH NR 2 ENGINE AT IDLE. INSPECT ALL 3 CHIP DETECTORS, INTAKE AND EXHAUST. BORESCOPED ENGINE PER MM. PERFORMED EEC BITE CHECK FOUND FIT CODES 73-30902 AND 73-20812. REMOVED AND REPLACED T12 SENSOR PER MM.