What was found
AFT CARGO DOOR CUTOUT SEAL PLATE IS CORRODED ALONG 2B RADIUS ON TOP & IB FACE IN SEVERAL LOCATIONS. - REMOVED FASTENERS, BLENDED CORROSION AND INSTALLED FASTENERS IAW CRJ 900 SRM'S 51-42-06-001-001-A01, 51-42-13-001-001-A01, 51-42-21-001-001-A01,AND 53-61-23-201-001-A01.