What was found
(CAN) CRACKS FOUND ON THE OTBD SIDE OF LT SUPPORT ANGLE IN THE LT SIDE COLLECTOR TANK BY AN AME WHEN HE WAS IN THE FUEL TANKS CARRYING OUT TASK: RJ2-28-900-750 FOR FUNCTIONAL CHECK OF COLLECTOR TANK CHECK VALVES. THE CRACKS ARE APPROXIMATELY 2.300" EMINATING FROM EACH OF THE 2 RELIEF CUTOUTS FOR THE STR IN THE WEB OF THE SUPPORT ANGLE, PN: 601R-10011-13A. THE ACFT IS CURRENTLY DOWN FOR A SCHEDULED "C" CHECK. REPAIR PARTS FABRICATED AND HEAT TREATED IAW SRM 51-10-06, SECT 3D. ALUMINUM ALLOY FASTENERS INSTALLED IAW SRM 51-42-21 AND REPROTECTED IAW SRM 51-25-00 AND 51-25-16.