As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON INTERCOSTAL AT FWD END OF AVIONIC BAY DOOR CUTOUT FRAME BS 364 AT S27L. REMOVED DAMAGED INTERCOSTAL IAW SRM 51-42-06-001-001-A01. LOCATED DRILLED AND DEBURED NEW INTERCOSTAL IAW SRM 51-40-06-001-001-A01, ALSO, 51-40-11-001-001-A01. INSTALLED NEW INTERCOSTAL IAW SRM 51-42-06-001-001-A01, ALSO 51-42-21-001-001-A01. REPAIR CLASSIFIED AS MAJOR.