What was found
WHILE ACFT IN HEAVY CHECK, MAINTENANCE FOUND CORROSION ON THE SHEAR CLIPS ON FR 83, 84, 85 AND 86 AT STR 27R-28R. REMOVED AND REPLACED SHEAR CLIPS ON FR 83,84,85 AND 86 AT STR 27R-28R. IAW EMB SRM 51-40-08. ACFT REMAINS IN HEAVY CHECK.