What was found
ON TAKEOFF, WHEN THE LANDING GEAR HANDLE WAS SELECTED UP, 1 ANTI SKID INBD, 2 PARKING BRAKE SOV CAUTION MESSAGES ANNUNCIATED. LANDING GEAR, ALL 3 REMAINED DOWN. ON APPROACH, BACK TO DEPARTURE, WHEN LANDING GEAR HANDLE SELECTED DOWN, CAUTION WENT AWAY. REPLACED LDG CONTROL HANDLE IAW AMM 32-31-01. FUNCTIONAL TEST GOOD REF MM 409, NR 401370 FOR DETAILS.