What was found
NDT INSP LT CENTER WING JOINT AT FR 40 MID HOLE FOUND CRACKED SIGNAL. REAMED THE HOLE THROUGH ALL LAYERS STEP BY STEP 0.4OMM EACH TIME NOT EXCEED R2 DIMENSION, PER A300-600F SRM51-40-44. PERFORMED ROTO-TEST INSPECTION AND NO CRACK FOUND, PER A300-600F NTM51-10-01. THE HOLE DIAMETER IS: 15.13 MM. WET INSTALL THE FASTENER, PER A300-600F SRM51-40-21. THIS IS CAT A REPAIR. MINOR REPAIR, IAW GMM6-2-100.