What was found
ON TAKEOFF, LANDING GEAR LEVER DOES NOT RETRACT. AIRCRAFT RETURNED TO SLU. DEFERRED SYSTEM AS PER MEL. AIRCRAFT FERRIED TO SJU. REPLACED LT MLG PROXIMITY SWITCH 51GB IAW JIC 32-61-00. ALSO, REMOVED AND REPLACED RT MLG HARNESS 55GB IAW JIC 32-31-00. PERFORMED RETRACTION SYSTEM, FOUND WORKING SATISFACTORY. (M)