As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BELT SPLIT CAUSING LOSS OF TENSION AND ALLOWING BELT TO JUMP OFF PULLEY DRIVE AND WEDGING BETWEEN MOTOR AND PULLEY; THUS, CAUSING RUBBER SMELL AND SMOKE IN CABIN. BELT WAS LAST INSPECTED FOR CONDITION 33.2 HRS AGO. DATE OF LAST REPLACEMENT 8-11-92. ITEM IS ON CONDITION.