What was found
DURING HEAVY MAINTENANCE: CORROSION ON SHEAR-CLIP, LOCATED AT FR 87, BTW. STGR 27R AND 28R, LWR. FUSELAGE, THAT IS BEYOND ALLOWABLE SRM LIMITS, REMOVED AND REPLACED SHEAR-CLIP (P/N: 170-66041-002) LOCATED AT FR 87 AND BTW. STGR 27R AND STGR 28R (LOWER FUSELAGE) PER E190 SRM: 51-40-08. CROSS-REF. AEROMAN NR# 2018-245826. (CONSIDERED A MAJOR REPAIR)