As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT 2084 FROM SEA TO CLM AIRCRAFT RETURNED TO FIELD DUE TO SHORTLY AFTER TAKEOFF NR 2 ENGINE SURGED AND CREW SHUT ENGINE DOWN. AIRCRAFT LANDED WITHOUT INCIDENT. REMOVED AND REPLACED BETA BACK-UP SWITCH. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.