What was found
DURING HEAVY MAINTENANCE INSPECTION, SERVICE ENTRY DOOR SILL SUPPORT ANGLE WAS FOUND TO BE CORRODED BEYOND REPAIRABLE LIMITS. REMOVE AND REPLACED IAW SRM'S, 51-42-06-001-001-A01, 51-42-21-001-001-A01,51-40-11-001-001-A01, AND 51-40-06-001-001-A01.