What was found
AFTER TAKEOFF GEAR HANDLE STUCK IN THE DOWN POSITION, COULD NOT RETRACT GEARS, ACCOMPLISHED AIR TURNBACK. TROUBLESHOT NOSE GEAR SQUAT SWITCH, ALL WIRING CHECKED GOOD. REMOVED AND REPLACED LANDING GEAR CONTROL HANDLE, AIRCRAFT REQUIRES OCF FOR LANDING GEAR CONTROL SYSTEM. ALL WORK DONE IAW CESSNA 750 MM CHAPTER 32-30-00.