As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPPER PANEL ATTACH CAP ON RIB FROM REAR SPAR TO T/E AT WS 433 HAS CORROSION UNDER NUTPLATE. FABRICATED NEW CAP IAW DWG 113T1510, HEAT TREATED TO T6 IAW BAC 5602, TABLE 1, PAGE 12 AND 17 NOTE C, INSTALLED NEW CAP IAW SRM 51-40-02 AND AMM 20-11-00D.