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 CENTER WING BOX FR36 FRONT VERTICAL STRINGER #4 ZONE 1. CRACK DIRECTION AT 12 AND 3 O'CLOCK LOOKING AFT. D: 0.090 INCH. MAINTENANCE PERFORMED PERMANENT REPAIR ON CENTER WING BOX UPPER BEAM #4 -Y254 IAW EA# 364558 AND DWG R57112154 ISSUE C.