What was found
DURING C18 CHECK INSPECTION, A CRACK WAS OBSERVED AT STRINGER S-17L END, BSTA 676 POINTING AFT. THE DAMAGE IS LOCATED AT THE STRINGER WEB EXTENDING ABOUT 3 IN. THE AFFECTED STRINGER SPLICES TO THE MAIN DECK CARGO DOOR SURROUND STRUCTURE. TRIMMED OUT THE DAMAGED PORTION OF THE AFFECTED STRINGER BETWEEN BSTA 698 AND BSTA 720. PERFORMED HFEC INSP OF TRIM OUT AND 3 IN AROUND IT TO INSURE A CRACK FREE CONDITION IAW NDT PART 6. TOUCHED UP EXPOSED EDGE OF STRINGER TRIM OUT AND ANY BARE AREA OF THE SURROUNDING STRUCTURE WITH CHEMICAL CONVERSION COATING IAW SRM 51-20-01. INSTALLED REPAIR PARTS AS SHOWN IN FIG 3 OF IAI REPAIR EA MF00852R0002. THIS IS A CATEGORY B REPAIR IAW SRM 51-00-06.