As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE MSG WHEN GEAR SELECTED UP ON CLIMBOUT / REMOVED NLG SHOCK STRUT IAW CRJ900 AMM 32-21-01-000-801. COMPLETED THE INSTALLATION OF THE NLG SHOCK STRUT IAW CRJ900 AMM 32-21-01-400-801. FINISHED INSTALL OF NLG SHOCK STRUST ASSY FROM STEP B(8) AND ON IAW CRJ 900 AMM 32-21-01-400-801. PERFORMED OPS TEST LISTED. ALL OPS CHECKED GOOD AT THIS TIME. NO LEAKS NOTED.