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 FLOORBEAM RADIUS BACKSIDE OF THE SPAR VERTICAL STRINGER N3 FR 36. CRACK L= 0.550 INCH. MAINTENANCE ACCOMPLISHED PERMANENT REPAIR INSTRUCTIONS ON FLOORBEAM Y254 VERTICAL STRINGER #3 AT FR 36 IAW EA 372566.