As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING D-CHECK, MAINTENANCE FOUND THE INTERCOSTAL BETWEEN STA 218 AND 237 BETWEEN LONGERON 27L AND 28L CORRODED BEYOND LIMITS. MAINTENANCE FABRICATED AN INTERCOSTAL FROM .050 INCH 2024-T3 ALUMINUM AND INSTALLED PER SRM 51-30-2. AIRCRAFT RETURNED TO SERVICE.