As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE INSPECTION, FOUND THE ALTERNATOR BELT DRIVE SUPPORT MISALIGNED WITH THE ALTERNATOR PULLEY CAUSING THE BELT TO SLIP PARTIALLY OFF OF THE ALTERNATOR PULLEY. FURTHER INVESTIGATION DETERMINED THE INCORRECT STARTER RING GEAR SUPPORT, PN 31M22045, WAS INSTALLED WHICH POSITIONED THE BELT SUPPORT FWD OF THE ALTERNATOR DRIVE PULLEY. SUBMITTER STATED THE INCORRECT PART WAS INSTALLED AT THE FACTORY DURING PRODUCTION. (X)