As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AWR HIDDEN DISCREPANCY: AFTER BUSHINGS REMOVAL CORROSION WAS FOUND ON LH/RH HINGE FITTING IN REF JC 900-32-710-902 STEP 5. (FYT) SUMMARY: ON NRC 00369 LH/RH FITTINGS OF NLG AFT DOOR WERE REPLACED FOR NEW ONES PER CRJ-900 SRM 51-42-21-001-001 A01.