As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT GROUNDED FOR HEAVY MAINTENANCE. AFTER REMOVING WEB FOR REPAIR ON NONROUTINE 0759, FOUND CORROSION ON THE FAIL SAFE STRAP AT BS 544 BETWEEN STRINGERS 34 AND 35R. REMOVED CORROSION. FOUND TO BE OUT OF LIMITS. REPAIRED BLENDED AREA BY REINFORCEMENT IN ACCORDANCE WITH REA 47224REA24.