What was found
(CAN) DURING PERFORMANCE OF P-CHECK, DAILY INSPECTION/AFTER LAST FLIGHT, HYDRAULIC FLUID FOUND LEAKING AT LOAD SENSOR AREA, FROM UNDER CUP ASSY, PN 801540 OF RT MAIN ROTOR SERVO. SERVO MFG COMPONENT MM WITH ILLUSTRATED PARTS BREAKDOWN, 67-39-13, DOES NOT BREAKDOWN ASSY PARTS TO THE EXTENT TO DEFINE THE PART NAME, SEAL/O-RING/ETC, THAT IS ACTUALLY LEAKING. CONVERSATIONS WITH TECH SERVICE REPRESENTATIVES CONFIRMED THAT, IN THAT PARTICULAR LOCATION, NO LEAKAGE LIMITS EXIST IN THE MM. HELICOPTER WAS BEING OPERATED UNDER EXTREMELY COLD (-30) DEGREE CONDITIONS. HELICOPTER WAS REMEOVED FROM SERVICE AND THE SERVO WAS REPLACED.