What was found
SERVICE DOOR LOWER SILL FORWARD AND AFT ATTACHMENT FITTINGS HAVE CORRODED ATTCHMNET BOLTS ( QTY 12 ) INTO FRAME AND THROUGH BOLTS FOR LATCH MECHANISM ( QTY 2 ). (C-CHECK) RO 3/10/2021 FOUND 8 EA OF THE 12 EA BOLTS IN THE SERVICE DOOR LOWER SILL, FWD AND AFT, ATTACHMENT FITTINGS, AS WELL AS THE 2 EA LATCH MECHANISMS TO BE CORRODED. REMOVED CORODDED HARDWARE AND INSTALLED NEW HARDWARE IN THE 10 EA LOCATIONS IAW CRJ-200 AMM TASK 20-21-00-910-801. NO FURTHER DEFECTS NOTED AT THIS TIME.