As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON STA 727D FRAME INNER CHORD AT LBL 26 AND 33; WL 159.<[01] UPON FURTHER INVESTIGATION; CORROSION FOUND TO BE LOCATED ON SIDEWALL LINING SUPPORT ANGLE AND NOT THE FRAME INNER CHORD.;[02] REMOVED AND REPLACED CHANNEL (SIDEWALL LINING SUPPORT) AT STA 727D BETWEEN STR-19L TO STR-25LPER SRM 51-40-02-0G-0 AND BOEING DWG 146A1220.;[03] VERIFIED.