As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS UNDERGOING AN ANNUAL INSPECTION AND A CRACK WAS DISCOVERED AT LT INBD BOTTOM AFT WING, WS 66.5. UPON FURTHER INVESTIGATION 2 PARTIAL RIBS, PN 83079-002, 83294-002 WERE FOUND CRACKED. INSTALLED NEW PARTIAL RIBS AND REPAIRED SKIN CRACK IAW DER DRAWINGS.