What was found
DURING HEAVY CHECK MAINTENANCE FOUND CORROSION, AFT FUSELAGE INTERNAL SHEAR CLIP AT FRAME 87 STRINGER 28R. REMOVED DAMAGED SHEAR CLIP, IN AFT CARGO, AT FRAME 87 STRINGER 28R. LOCATED, DRILLED AND INSTALLED NEW SHEAR CLIP, IN AFT CARGO, AT FRAME 87 STRINGER 28R. SURFACE PROTECTION APPLIED. REF EMB SRM 51-23-00. A/C REMAINS IN CHECK.