As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT GROUNDED FOR SCHEDULED MAINTENANCE. IN CONJUCTION WITH NON-ROUTINE 2109N529, UPON REMOVAL OF INTERCOSTAL AT STATION 1480-1500 STR27R, FOUND CORRODED INTERCOSTAL AT STATION 1460-1480 STRINGER 27R. EVALUATED AREA OF CORROSION FOUND TO BE OUT OF LIMITS. 100% MATERIAL LOSS IAW B757 SRM 51-10-16. REMOVED AND REPLACED WEB, INTERCOSTAL AND CHORD IAW E-88 #14017, B767 SRM 51-40-02.