As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON POST-FLIGHT INSPECTION, FIELD MAINTENANCE PERSONNEL DISCOVERED THE LOWER FITTING TGB, PN 6420-66345-101, CRACKED AT THE AFT LOWER LEFT-HAND CORNER. THE CRACK IS APPROXIAMTELY .5000 INCH IN LENGTH AND TRAVELS THROUGH THE THICK WEB AND TURNS TOWARDS THE LOWER LEFT-HAND BARREL NUT RECESS OF THE TAIL GEARBOX FITTING (UPPER). CAUSE: UNKNOWN