What was found
AFT CARGO DOOR FLOOR SILL, MID INNER CHORD, HAS EXFOLIATED CORROSION. C-CHECK RO 12/26/2020. REMOVED AND INSTALLED NEW AFT CARGO DOOR FLOOR SILL, MID INNER CHORD, REF CRJ 900 SRM AND DWG. COMPLETED FORM M-337. SEE CONTINUATION CARD FOR DETAILS.