As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN AIRCRAFT DEPARTED CKB A GEAR DISAGREE WARNING, NOSE DOOR OPEN WARNING AND A NOSE WHEEL STEERING INOP CAUTION FOLLOWED BY A WOW INPUT CAUTION. INVESTIGATED AND FOUND NLG STRUT WOULD NOT FULLY EXTEND DUE TO DEFECTIVE O-RING SEAL ON LOWER BEARING AND FLOATING PISTON. INSTALLED SERVICEABLE SEALS ON LOWER BEARING AND PISTON IAW CRJ AMM 32-21-20-400-801 AND 32-21-25-400-801.