What was found
DURING HEAVY MAINTENANCE, . AFTER FASTENER REMOVAL, CORROSION FOUND ON THE SHEAR TIE, FRAME 87, STRINGERS 27-28R. CORROSION REMOVED AND FOUND OUT OF LIMITS IAW SRM 51-12-01, 51-10-03, AND SRM 51-75-16, FABRICATED AND REPLACED IAW DWG 170-66041-001, REV A, SRM SRM 51-41-02, AND SRM 51-41-01.