What was found
MAJOR REPAIR, DURING HEAVY CHECK WAS REPORTED THAT SHEAR CLIP AT FRAME 75 BETWEEN STRINGERS 28-29R ARE CORRODED. MAINTENANCE REMOVED AND FABRICATED SHEAR CLIP INSTALLED ON FRAME 75 BETWEEN STRINGERS 28-29R IAW SRM 51-31-00, 51-41-01 SEE VP-011295-2015/530, C1-C3 FOR HFEC, MATERIAL BUYOFF AND WORK STEPS. PN 170-66759-001, SHEAR CLIP. ACFT REMAINS AT UNTIL HEAVY CHECK IS COMPLETED.