As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-15 CHECK 2 EACH 1 INCH CRACKS WERE FOUND ON FLOOR BEAM UPPER STRUCTURE AT AFT END OF AILERON QUADRANT CUTOUT BS 676, RBL 24.5. MAINTENANCE CUTOUT DAMAGE ON FLOORBEAM UPPER STRUCTURE BS 676, RBL 24.5; FABRICATED 3 EACH DOUBLERS; INSTALLED REPAIR PARTS IAW SB 737-57-1139 & E.O. 5715-01007.