As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN TRANSMISSION PN 407-040-006-123, SN A-1061, TT 1436.9 MAKING METAL WAS PULLED FROM THE ACFT & DISASSEMBLED. INSPECTED & FOUND THE DUPLEX BEARING PN 407-340-032-010, SN ZS1127 INSTALLED. HAS TWO BALL BEARINGS STARTED PITTING & FAILING.