What was found
DURING HEAVY MAINTENANCE: CORROSION: SHEAR CLIP FR77 STR28-29L AFT CARGO; REF TOMX W/O N249JB/2525/E190/BRIDGE NR00100: DEEMED OUT OF LIMITS IAW SRM 51-10-03, 51-12-01, AND 51-75-16. R & R SHEAR CLIP @ FR77 STR28-29L IAW SRM 51-41-01, 51-41-02, AND 51-43-03. (CONSIDERED A MAJOR REPAIR)