What was found
DURING HEAVY CHECK MAINTENANCE FOUND HORIZONTAL STAB RIB 12 RH CRACKED. HORIZONTAL STAB RIB 12A REPLACED IAW REPUBLIC 170EO-55-10-0004_1. REF SB170-55-0014 REV 1
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY CHECK MAINTENANCE FOUND HORIZONTAL STAB RIB 12 RH CRACKED. HORIZONTAL STAB RIB 12A REPLACED IAW REPUBLIC 170EO-55-10-0004_1. REF SB170-55-0014 REV 1