As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEAR ON PIANO HINGE FUSELAGE SIDE AT PASSENGER DOOR. WEAR ON PIANO HINGE FUSELAGE SIDE AT PASSENGER DOOR WAS BLEND OUT CRJ-900 SRM 51-12-00-001-001-A01 AND EVALUTED OU OFF LIMITS PER CRJ-900 SRM 53-21-23-201-010-A01 AND PIANO HINGE WAS REPLACED PER CRJ900 SRM 51-42-21-001-001-A01 AND CRJ900 SRM 53-21-23-201-007-A01