What was found
A CRACK WAS FOUND EMANATING FROM THE BOTTOM OF THE LT FLANGE ON THE VERTICAL STIFFENER FS 1183 AT RBL 8. THE CRACK WAS APPROXIMATELY 0.25 INCH IN LENGTH. S/B 727-53-0175, REV 2, WHICH IS REQUIRED BY A.D. 90-06-09, CONTAINS INSPECTION, MODIFICATION, AND REPAIR INSTRUCTIONS FOR THIS AREA. THE REMAINDER OF THE MOD WILL BE ACCOMPLISHED PER E.O. 4-59275-3AD AT THE NEXT OVERHAUL.