As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSP OF WING CTR SECTION IAW AD 2002-26-02 INTER-GRANULAR CORROSION IN EXFOLIATION STAGE WAS DISCOVERED ON THE BOTTOM MAIN SPAR CAP, EXTREME REAR OTBD SECTIONS WHERE IT WAS MILLED TO ACCOMMODATE THE MLG TRUNNION AND JUST INBD. ALSO THE LT AND RT (WING WALK) INBD T/E RIBS WERE CORRODING AWAY AND CORROSION WAS FOUND ON THE SURFACE ON VARIOUS LOCATIONS ON THE CTR SECTION.