As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS COMPARTMENT DOOR CUTOUT FRAME AT FS 349 BETWEEN STRINGERS 26L AND 27L ARE CORRODED. REMOVED CORRODED FS 349 LWR FRAME SEGMENT IAW SRM 51-42-06 & 51-42-21. DRILLED & LOCATED NEW FRAME. INSTALLED NEW FS 349 LWR FRAME SEGMENT IAW SRM 51-42-06 & 51-42-21.