What was found
AFTER TAKEOFF GEAR AND FLAPS WERE RETRACTED "HYD PRESS ON" LIGHT REMAINED ON AFTER ALL CYCLES COMPLETE. ALSO ILLUMINATED WAS THE RED GEAR UNSAFE LIGHT. CYCLED GEAR 3 TIMES ALL WITH SAME RESULT. JACK AIRCRAFT INSPECTED GEAR AND SWITCHES NO DEFECTS NOTED. RAN GEAR 8 TIMES NO DEFECTS NOTED, CLEANED UP LOCK SWITCHES AND PERFORMED LANDING GEAR HYDRAULIC SYSTEM TEST CH 32-01-00, NO DEFECTS NOTED. CHECK SWITCH ADJUSTMENTS NO DEFECTS NOTED CH 32-61-20. RAN GEAR SEVERAL MORE TIMES AGAIN, NO DEFECTS NOTED. HYD SYSTEM SERVICED CORRECTLY ALL WORK IAW 32-12-00 CE560 M/M CH'S 32-61-00, 32-01-00 AND 32-30-00.