What was found
RH HORIZONTAL STABILIZER RIB 14 IS CRACKED ON UPPER AFT SIDE. (MAJOR REPAIR). REMOVED RH HORIZONTAL STABILIZER RIB 14 PER EMB 175 SRM 51-40-08. LOCATED AND DRILLED NEW RH HORIZONTAL STAB RIB 14 PN: 170-62620-002 PER EMB 175 SRM 51-40-02, INSTALLED 30EA NUT PLATES TO RIB 14 PER EMB 175 SRM 51-40-08. RESTORED FINISH TO NEW RH HORIZONTAL STAB RIB 14 PER ETN-EJ-51-015, EMB 175 SRM 51-23-06, AND EMB 175 CPM 51-25-00. REMOVED AND REPLACED RH HORIZONTAL STAB RIB 14 (PN: 170-62620-002) PER EMB 175 SRM 51-40-08.