What was found
AFT DRAIN MAST INNER CHANNEL AT FS1030 TO FS1047 CORRODED. (C-CHECK RO 1/13/2022) REMOVED THE AFT DRAIN MAST AT FS 1030.00 TO FS 1047.00 STGR 27 TO FACILITATE THE REMOVAL OF CORRODED MAST CHANNEL PER AMMTASK 38-32-12-000-801 (CONFIG A01). / REMOVED CORRODED AFT DRAIN MAST CHANNEL AT FUSELAGE STATION FS 1030.00 TO FS 1047.00 ON STRINGER STGR 27 AND REPLACED WITH NEW CHANNEL PER CRJ700 SRM 53-61-04-001-003-A01 AND 51-42-06-001-001-A01. / PLEASE REFERENCE CONTINUATION CARD FOR REPAIR DISPOSITION AND CORRECTIVE ACTIONS.NO DEFECTS NOTED / NOTE: PLEASE REFERENCE CAMP # 23752490 FOR THE DRAIN MAST INSTALLATION DISPOSITION AND CORRECTIVE ACTIONS. AND CAMP # 23531501 FOR PRESSURERIZATION CHECKS.