As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF. ALL THREE INDICATORS STAYED ON AND GREEN. PARKING BRAKE SHUTOFF VALVE CAUTION MESSAGE AND ANTI SKID OUTBOARD CAUTION MESSAGE DISPLAYED AND WENT AWAY WHEN GEAR LEVER SELECTED BACK TO DOWN. FOUND LANDING GEAR CONTROL HANDLE TO BE FAULTY. WAS ABLE TO DUPLICATE 3 INDICATIONS AND GEAR NOT RETRACTING. R & R LANDING GEAR CONTROL HANDLE IAW AMM. PERFORMED MULTIPLE GEAR EXTENSIONS AND RETRACTIONS. OPS CHECK GOOD.