As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING ODOR IN CABIN. FLIGHT DIVERTED. DUST AND FEATHER TYPE DEBRIS COMING OUT OF VENTS BY SEATS 39AB-42AB, INTERMITTENTLY PER CREW. CREW LATER STATED THAT WHEN L DUCT PRESS DROPS TO 37 PSI FROM 42 PSI THERE IS A RUMBLE NOISE IN AFT CABIN AND SIDEWALL IS GETTING VERY WARM. FOUND CLAMP FOR CARGO HEAT DUCT IN AFT PIT LT SIDE BROKEN AND DUCT SEPARATED. REPLACED CLAMP AND INSULATION BLANKETS AS REQUIRED.