As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT GROUNDED FOR HEAVY MAINTENANCE. LOWER FLOORBEAM WEB CRACKED AT STATION 1373 BETWEEN STRINGER 35R AND 36R. CUTOUT AND REMOVED DAMAGED PART OF WEB. FABRICATED AND INSTALLED FILLER AND DOUBLER IN ACCORDANCE WITH SRM 51-70-13 FIGURE 1 TYPICAL WEB REPAIR.