As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOTS HAD REPORTED SLIGHT ROUGHNESS AT IDLE. DURING INSPECTION FOUND RT OB MUFFLER SUPPORT BRACKET UPPER ATTACH BOLT NR 2050012-1 BROKEN. THIS BOLT SUPPORTS BRACKET AS WELL AS NR 3 CYLINDER INTAKE TUBE. INTAKE TUBE LOOSE ALLOWING INDUCTION AIR LEAK AS WELL AS FUEL LEAKAGE INTO ENGINE COMPARTMENT. PART FAILURE DUE TO LOAD AND VIBRATION.