What was found
MAIN ENTRY DOOR LH HINGE HALF COMMON TO AIRFRAME IS CORRODED ON AFT UPPER CORNER. FOUND DURING 600 HOUR CABIN DOOR INSPECTION. REMOVED MAIN ENTRY DOOR FORWARD HINGE P/N UNKNOWN DUE TO CORROSION AND INSTALLED NEW FORWARD MAIN ENTRY DOOR HINGE P/N 6711331-1 PER CESSNA 560XL SRM 51-40-03, 51-40-06, 51-40-08, AND MM 20-32-00.