As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAJOR REPAIR, WHILE AIRCRAFT WAS IN FOR HEAVY CHECK FOUND LT STAB FRONT SPAR CRACK AT FLANGE ON FASTENER ATTACHMENT TO RIB 12. CORRECTIVE ACTION: REPAIR PERFORMED BY AAR NRC 4500812-3000-0046, PER ETD 2020-170-034311. AIRCRFT HAS BEEN RETURNED TO SERVICE.