As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON FURTHER INVESTIGATION WHILE CHANGE A/C SIDE OF NLG AFT DOOR PIN BUSHING FOUND HINGE FITTING ASSY ON LH AND RH SIDE OF A/C TO BE CORRODED AND REQUIRE REPLACEMENT. INSTALLED NEW LH AND RH FITTING, HINGE, NLG, AFT DOOR P/N: CC670-32212-7 IAW CRJ900 SRM 51-42-21-001-001-A01.