As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RETURN TO FIELD FOR GEAR DISAGREE WARNING MESSAGE. NO EMERGENCY WAS DECLARED, AND THE FLIGHT WAS NOT OVERWEIGHT AT LANDING. REMOVED AND REPLACED PSEU IAW CRJ900 AMM 32-61-01-000-80. PERFORMED LANDING GEAR SWINGS IAW CRJ900 AMM 32-30-00-710-801. NO DEFECTS NOTED (RETRACTED IN 9 SECONDS, EXTENDED IN 12 SECONDS)