What was found
AFT CARGO FRAME SHEAR CLIP HAS CORROSION AT FR 81 BETWEEN STR 28R - STR 29R (MAJOR REPAIR) (LEVEL 2 CORROSION) EVALUATED SHEAR CLIP AT FR 81 BETWEEN STR 28R - STR 29R IS FOUND TO BE CORRODED PER EMB-175 SRM 51-10-02. NO ALLOWABLE LIMITS. REMOVED SHEAR CLIP AT FR 81 PER EMB 175 SRM 51-40-08. LOCATED AND DRILLED NEW AFT CARGO FRAME SHEAR CLIP, P/N: 170-66671-001 AT FR 81 IAW EMB 175 SRM 51-40-02. TREATED BARE METAL AND RIVETS INSIDE AND OUTSIDE REF EMB 175 SRM 51-23-04. RESTORED FINISH IAW EMB 175 SRM 51-23-05, SRM 51-23-06, AND ETN EJ-51-015. REMOVED AND REPLACED AFT CARGO FRAME SHEAR CLIP AT FR 81 BETWEEN STR 28R - STR 29R PER EMB 175 SRM 51-40-08.