As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: CARCK INDICATION ON FRAME IN PASSENGER CABIN CRACK INDICATION FOUND ON HORIZONTAL FLOOR BEAM RADIUS OF THE BACKSIDE THE SPAR VERTICAL STR 4 ZONE 2 FR36 CENTER WING BOX, CRACK LENGTH 0.236 INCH. MAINTENANCE PERFORMED PERMANENT REPAIR LOC ON HORIZONTAL FLOOR BEAM -Y254, STR 4 FR 36 CENTER WING BOX IAW EA 366035 AND DWG R57112154.