As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FORWARD LAVATORY UPPER TOILET DRAIN WAS FOUND TO HAVE A DENT WITH WEAR DAMAGE TO THE OUTER INSULATION. PERFORMED PERMANENT REPAIR IAW CRJ 700/900 AIPC 38-31-19, FIGURE 5B, ITEM 5, EA 12-2021-212. DEFECT LOCATION: OUTER INSULATION ADJ TO THE BEND IN THE DRAIN