What was found
AFT BAGGAGE BAY DOOR CUTOUT LOWER THRESHOLD CORROSION INDICATIONS FS 1020 TO FS 1045, FOUR PLACES AS MARKED. REMOVED & REPLACED AFT CARGO DOOR SILL P/N MM670-35655-003, IAW CRJ 900 SRM 51-42-06-001-001-A01, 51-42-21-001-001-A01, 51-42-21-001-001-A01, 51-40-11-001-001-A01, 51-41-02-001-001-A01. LEAK CHECK GOOD.