What was found
SERVICE DOOR SILL IS CORRODED. REMOVE CORROSION FROM UPPER SURFACE OF ANGLE MOUNTING P/N SH670-31996-3. STARTED TO REMOVE CORROSION ON UPPER SURFACE OF MOUNTING ANGLE P/N SH670-31996-3 IAW CRJ 900 SRM 51-21-06-001-001-A01. HEAVY PITTING WAS NOTED ON MOUNTING ANGLE. CORROSION AND PITTING FOUND TO BE BEYOND THE ALLOWABLE DAMAGE LIMITS OF CRJ 900 SRM 53-21-23-101-002-A02 DUE CORROSION DEPTH AND MULTIPLE ELEMENTS BEING AFFECTED. REPLACEMENT REQUIRED. LOCATE AND DRILL NEW MOUNTING ANGLE P/N SH670-31996-3. LOCATED AND DRILLED NEW MOUNTING ANGLE P/N: SH670-31996-3 IAW CRJ900 SRM 51-40-11-001-001-A01. INSTALLED NEW GALLEY SERVICE DOOR LOWER SILL MOUNTING ANGLE PN SH670-31996-3 IAW CRJ900 SRM 51-42-06-001-001-A01 AND 51-42-21-001-001-A01