What was found
INSIDE THE ACFT CABIN LEFT HAND SIDE FROM F.S. 518.00 TO F.S. 540.00 (APPROX) PRESSURE FLOOR SILL SHOWS SIGNS OF CORROSION IN MULTIPLE AREAS (AREAS MARKED WITH RED GREASE PENCIL) (C-CHECK RO 08/31/2026)REMOVED CORROSION FROM CABIN LEFT HAND SIDE PRESSURE FLOOR SILL AT F.S. 518.00 TO F.S. 540.00 IAW CRJ200 SRM 51-21-06. MEASURED AREA PRESSURE FLOOR SILL ORIGINAL THICKNESS IS 0.055" MINIMUM REMAINING IS 0.046" AREA FOUND TO BE ALLOWABLE LIMITS IAW MHIRJ REO 601R-53-41-3402 REV-- DATE 2026-02-12. RESTORED SURFACE FINISH ON FLOOR SILL IAW MHI RJ REO 601R-53-41-3402 REV-- DATE 2026-02-12 AND CRJ200 SRM 51-21-16.CIC WILL BE APPLIED ON WORK CARD 2530/ CP 31823245AIRCRAFT WEIGHT CHANGE NEGLIGIBLETHRESHOLD INSPECTION (6398 FLIGHT CYCLES) DUE BEFORE OR AT 48015 FLIGHT CYCLES CALIBRATED TOOL USED:NORTEC 600 AV8958 S/N 60006184449 CAL DUE 01-06-2027EPOCH 650 S/N 180653706 CAL DUE 01/06/2027