What was found
ON TAKEOFF, GEAR HANDLE WOULD NOT RAISE ABOVE OFF POSITION, HAD 3 GREEN INDICATION, TAIL SKID AND 3 RED LIGHT. WHEN FLAPS RAISED FROM 5 TO 2, HAD INTERMITTENT HORN. FLAPS RETURNED TO 5 AND GEAR HANDLE DOWN WITH RESULTING 3 GREEN LIGHTS. CHECKLIST PROCEDURES FOR LEVER LATCH FAILURE FOLLOWED. LANDED OK AT MEMPHIS. FOUND AIR SENSE SENSOR IN LEFT HAND WHEEL WELL BAD. REPLACED SENSOR, REPLACED LANDING GEAR ACCESSORY UNIT BAD. REPLACED SOLENDID PRECAUTIONARY. SYSTEM CHECK NORMAL OK TO CONTINUE.