As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON REMOVAL OF FRAME BS 574 BETWEEN S20R AND S20L FOUND REINFORCING ANGLE CORRODED AT MULTIPLE LOCATION. REMOVED AND REPLACED BY NEW REINFORCING ANGLE AT BS 574 BETWEEN S24L TO S20L IAW SRM 51-42-06 AND SRM 51-42-21 REV. 39, AND DWG 601R36024 REV. N. PERFORMED LEAK CHECK GOOD,