What was found
UPON GEAR RETRACTION AFTER TAKEOFF, THE PILOTS NOTICED THE RED GEAR TRANSIT LIGHT WOULD NOT EXTINGUISH. THE PILOTS DIVERTED TO BHB. MAINTENANCE CLEANED THE GEAR SWITCHES AND SWUNG THE GEAR BUT COULD NOT DUPLICATE THE PROBLEM. THE AIRCRAFT WAS RELEASED FOR A TEST FLIGHT. UPON TAKEOFF THE GEAR WOULD NOT RETRACT. THE GEAR WERE PUMPED DOWN BY HAND AND THE AIRCRAFT LANDED SAFELY. MAINTENANCE DETERMINED THAT THE GEAR HYDUALIC POWER PACK FAILED.