What was found
DURING HEAVY CHECK MAINTENANCE FOUND AFT CARGO COMPARTMENT, CORROSION FOUND ON SHEAR CLIP AT FR81 BETWEEN STR 27-28 RH. AFT CARGO COMPARTMENT AT FR 81 BETWEEN STR 27-28RH SHEAR CLIP REPLACED IAW EMB 170 SRM 51-41-01, 581-41-02, 51-21-01 AND 51-21-02.