As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MEASURE WITH GO-NO-GO GAUGE IN JOB CARD TRFKE006TPGE STEP 13.2 AT FUSELAGE PIANO HINGE AT PASSENGER DOOR WAS FOUND OUT OF LIMITS. REPLACEMENT IT´S NECESSARY. PIANO HINGE AT PASSENGER DOOR WAS REPLACED PER CRJ900 SRM 53-21-23-201-007-A01