As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RAM AIR VALVE FAILED (DOOR HINGE POINTS CRACKED/BROKEN). CREW RECEIVED A "DUCT1 OVR HT" FOLLOWED BY A "DUCT2 OVR HT" CAS MESSAGE. PER THE FLIGHT MANUAL, ENGINE POWER WAS REDUCED AND THE AIRCRAFT MADE AN UNSCHEDULED LANDING AT KBNA. AOG TEAM FOUND THE RAM AIR CONTROL VALVE BROKEN, AND REPLACED THE VALVE AND DOWNSTREAM HEAT EXCHANGER.