As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
*PASSENGER FUSELAGE PIANO HINGE, ALL LUGS ARE SCRATCHED AND PITTED. MARKED WITH GREASE PENCIL. (C-CHECK RO 10/22/2021) REPLACED PASSENGER FUSELAGE PIANO HINGE REF CRJ900 SRM 53-21-23-201-007-A01. COMPLIED WITH 51-900-1002-SKY. LEAK CHECK GOOD.