What was found
DURING CRUISE FLIGHT PILOT REPORTED BUFFET AND LOSS OF GEAR UP INDICATION. PILOT SLOWED TO GEAR SPEED AND DESENDED TO VFR CONDITIONS AND RETURNED TO DEPARTURE AIRPORT. SELECTED GEAR DOWN AND COULD NOT GET GEAR DOWN INDICATION. EMERGENCY EXTENDED GEAR AND OBTAINED A GEAR DOWN INDICATION. UNEVENTFUL LANDING. ON INSPECTION FOUND THE LEFT MAIN GEAR DOWN LOCK ACTUATOR #1281504-1 HAD RUPTURED END SHAFT SEAL AND MOST OF HYDRAULIC FLUID HAD LEAKED FROM SYSTEM. DISSASEMBELED AND FOUND NO DEFECTS EXCEPT FAILED SEAL.REPLACED SEAL AND FUNTION TEST OK.