What was found
AIR DUCT OVER HEAT CABIN (ENVIRONMENTAL DUCT OVERTEMP) REACHED A TEMP OF 325C AND WAS INCREASING AND SMOKE IN THE CABIN IN-FLIGHT. FOLLOWED CHECKLIST Q4 AND TEMP DECREASED TO 208C.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIR DUCT OVER HEAT CABIN (ENVIRONMENTAL DUCT OVERTEMP) REACHED A TEMP OF 325C AND WAS INCREASING AND SMOKE IN THE CABIN IN-FLIGHT. FOLLOWED CHECKLIST Q4 AND TEMP DECREASED TO 208C.