What was found
ON DEPARTURE, THE LANDING GEAR WOULD NOT RETRACT. ICE AND SLUSH ON THE GEAR ARE PROBABLY THE REASON. REMOVED THE NOSE GEAR SQUAT SWITCH ACTUATING CAM. INSTALLED A NEW SWITCH CAM AND HARDWARE. PERFORMED NOSE GEAR LUBRICATION AND SERVICED NOSE GEAR STRUT. PERFORMED LANDING GEAR EXTENSION & RETRACTION CHECKS 10 TIMES, NO FAULTS NOTED IAW AMM 12-12-00, 32-30-00, 32-30-30, AND 32-60-00.