As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FORWARD WASTE WATER DOOR CORROSION UNDER THE LOWER DOOR HINGE HALF ON THE FUSELAGE DOWN TO THE BOTTOM OF THE WASTE WATER CUT OUT AREA, MARKED & FLAGGED. C-CHECK RO 9/21/2020. REMOVED CORROSION ON FWD WASTE DOOR UNDER LOWER DOOR HINGE HALF ON THE FUSELAGE DOWN TO THE BOTTOM OF THE WASTE WATER CUT OUT AREA. FOUND TO BE WITHIN LIMITS, REF CRJ700 SRM.