As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FINAL RCV'D GEAR DISAGREE WARNING MSG ALONG WITH NOSE DOOR WARNING MSG WHEN CYCLING GEAR HANDLE, USED MANUAL GEAR EXT. TROUBLESHOT PSEU IN REF TO CRJ FIM 32-60-00 FAULT CODES SHOWED THAT NLG SELECTOR VALVE WAS POSSIBLE FAULT REMOVED IN REF TO CRJ AMM 32-33-10; INSTALLED NLG SELECTOR VALVE REF MM CH 32-33-10. PERFORMED GEAR SWINGS REF MM CH 32-30-00. GEAR SWINGS GOOD AT THIS TIME.