What was found
AFTER TAKEOFF THE GEAR HANDLE WAS PLACED IN THE UP POSITION, NO GEAR MOVEMENT WAS NOTED & THE GEAR INDICATIONS SHOWED A RED UNLOCK LIGHT & A GREEN NOSE GEAR DOWN LIGHT. SHORTLY AFTER CLIMBING TO A SAFE ALTITUDE ALL THREE GREEN GEAR LIGHTS WERE NOTED ON WITH THE RED UNLOCK LIGHT REMAINING. WE COMPLIED WITH THE ABNORMAL CHECKLIST & PLACED THE GEAR HANDLE IN THE DOWN POSITION WHICH EXTINGUISHED THE RED UNLOCK LIGHT, LANDING WAS NORMAL. JACKED ACFT, OP MLG SEVERAL TIMES, OPS MLG WITH RUDDER PEDALS TO LT & RT SEVERAL TIMES & OPS MLG SLOW SEVERAL TIMES, INSPECTED MLG WW & CABLES, NO DEFECTS NOTED. REMOVED LT HYD CASE DRAIN FILTER. INSPECTION FOUND ONLY MINUET AMOUNT OF DEBRIS. CLEANED FILTER & INSTALLED SAME. INSPECTED ALL HYD FILTER BYPASS BUTTONS, NONE FOUND TRIPPED. LT CASE DRAIN FILTER LEAK CHECKED GOOD. ENG DRIVEN HYD PUMP OPS TESTED GOOD IAW MM 29-10-02. ENG HYD PUMP TESTED GOOD IAW MM 29-00-00 5-21-14.