As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ACT - FLIGHT 3420, THE CREW REPORTED A NUMBER TWO DUCT LEAK LIGHT. THE CREW SHUTDOWN THE NUMBER TWO ENGINE AS A PRECAUTION AND THE AIRCRAFT DIVERTED TO ACT WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND A LOOSE CLAMP ON THE ON THE NUMBER TWO TEMPERATURE CONTROL VALVE. MAINTENANCE TIGHTENED THE AFFECTED CLAMP, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.