As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIR RETURN TO CLT DUE TO GEAR DISAGREE MSG. GEAR REMAINED DOWN AFTER TAKE-OFF. ATC DECLARED EMERGENCY AND TRUCKS WERE ROLLED. CAPTAIN CANCELED EMERGENCY ONCE OFF OF THE RUNWAY. REMOVED AND REPLACED LANDING GEAR CONTROL PANEL LEVER IAW CRJ 700 AMM 32-31-01-000/400-802. OPS TEST GOOD