As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: CRACK INDICATION ON FRAME IN PASSENGER CABIN (1 EA) CRACK INDICATION FOUND ON HORIZONTAL FLOOR BEAM RADIUS OF THE BACKSIDE THE SPAR VERTICA L STR 2 ZONE 1 FR36 CENTER WING BOX CRACK L=0.283 INCH. MAINTENANCE PERFORMED PERMANENT REPAIR LOC ON HORIZONTAL FLOOR BEAM Y765 STGR 2 FR36 CENTER WING BOX IAW EA# 366035.