What was found
SERVICE DOOR SEAL STRIKER AFT SIDE HAS LIGHT CORROSION AROUND SCREW HOLES. REMOVED CORROSION IAW CRJ-900 SRM 51-21-06-001-001-A01 ORIGINAL MATERIAL THICKNESS 0.120 REMOVED .066 , REMAINING MATERIAL THICKNESS 0.054, SEAL STRIKER IS OUT OF LIMITS DUE TO MORE THEN 10% MATERIAL LOSE AND NO DAMAGE ALLOWED AROUND 2D OF A FASTENER HOLE, REQUIRED REPLACEMENT. LOCATED AND DRILLED NEW SERVICE DOOR SEAL STRIKER (P/N:SH670-31412-7) IAW CRJ900 SRM 51-40-11-001-001-A01, INSTALLED NEW SERVICE DOOR SEAL STRIKER (P/N:SH670-31412-7) IAW CRJ900 SRM 51-42-06-001-001-A01.