As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN HEAVY CHECK MAINTENANCE FOUND THE RIGHT HORIZONTAL STABILIZER RIB 10A CRACKED. MAINTENANCE REPAIRED THE RIGHT HORIZONTAL STABILIZER RIB 10A IAW EMB ETD 2013-170-003662. "MAJOR REPAIR" THE AIRCRAFT IS OUT OF SERVICE IN HEAVY CHECK.