As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION OF LEFT ENGINE EXHAUST AS A RESULT OF RIGHT EXHAUST FAILURE, FOUND INBOARD HEAT DUCT DISCONNECTED. THIS WAS DUE TO COLLAPSE OF THE END OF THE ADAPTER ASSY. UPON DISASSEMBLY OF SYSTEM, FOUND BOTH LEGS OF ADAPTER COLLAPSED FROM OVERTORQUE OF DUCT CLAMPS. REMOVED AND REPLACED ADAPTER.