As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON INTERCOSTAL AT BS 727A AND 727B AT STRINGER 27L AND 27R. REMOVED INTERCOSTALS AT STRINGER 27L & 27R SRM 51-30-02, UPON FURTHER EVALUATION BOTH INTERCOSTALS WERE FOUND TO HAVE EXTENSIVE CORROSION. IN ADDITION TO THE INTERCOSTALS A WEB AND 2 ANGLES REQUIRE TO BE REPACED. FABRICATED ALL REPAIR PARTS IAW SRM 51-20-01. INSTALLED INTERCOSTALS WEB AND ANGLES IAW SRM 51-30-2.