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 FOUND ON HORIZONTAL FLOOR BEAM RADIUS BACKSIDE OF THE SPAR VERTICAL STRINGER N2 FR 36. CRACK L= 0.530 INCH. MAINTENANCE ACCOMPLISHED PERMANENT REPAIR INSTRUCTIONS ON FLOOR BEAM Y765 VERTICAL STRINGER #2 AT FR 36 IAW EA 372566.