As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LIGHT CORROSION COMMON TO PRESSURE FLOOR SILL NUTPLATE AT FUSELAGE STA 544.00+11.5 LBL 42. ***AIRCRAFT REMOVED FROM SERVICE*** REMOVED CORROSION FROM PRESSURE FLOOR SILL NUTPLATE AT FS 544+11.5 LBL 42. HFEC INSPECTION PERFORMED WITH NO INDICATION NOTED. EVALUATED BLEND AREA FOUND TO BE WITHIN ALLOWABLE LIMITS. REF BOMBARDIER GREO 601R-53-41-666 REF C.