As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING POST-MAINTENANCE, HYDRAULIC POWER-ON CHECKS OF FLIGHT CONTROLS, FOUND FORWARD LT MAIN ROTOR SERVO-CONTROL PRESSURE HOSE, FLEXIBLE PIPE, LEAKING FROM UNDER FIRE SLEEVE. REPLACED HOSE WITH NEW PART WHICH SUPERSEDES THE OLD PART NUMBER. CERTAIN PN HOSES ARE KNOWN TO BE POTENTIALLY DEFECTIVE BY THE OEM BUT NO SB HAS BEEN ISSUED TO ADDRESS THIS. THIS HOSE WAS INSTALLED 15 MONTHS AGO AND HAS OPERATED FOR 307.4 HOURS.