What was found
AFT PIT SIDEWALL LT SIDE FRAME, INNER CHORD CORRODED AT STATION 1420, BETWEEN STRINGER 19L & 18L. R & R FRAME INNER CHORD IAW SRM 51-40-02 & DWG 146N1012. REMOVED CORROSION, FOUND OUT OF LIMITS IAW SRM 51-10-02, SRM 53-00-07-1A FIG 101 DET II. CATEGORY A REPAIR, MAJOR REPAIR.