What was found
STRINGER 20R, IS CORRODED BETWEEN FS 295 TO FS 310, MARKED. C-CHECK RO 12/26/2020. REMOVED AND REPLACED STRINGER 20R FROM FS 280 TO FS 319, REF CRJ900 SRM AND DWG. COMPLIED WITH SKYWEST TASK CARD, COMPLETED FORM M-337. SEE CONTINUATION CARD FOR DETAILS. PRESSURE LEAK CHECK GOOD.