As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING FLIGHT A SYSTEM HYDRAULIC SYSTEM QUANTITY BEGAN TO DROP, AT A RATE OF 1 GALLON PER HOUR. DUE TO POOR WEATHER ELECTED TO DIVERT. GEAR EXTENDED NORMALLY AND QUANTITY REMAINED STEADY. FLIGHT LANDED WITHOUT INCIDENT. FOUND A SYSTEM AILERON POWER CONTROL UNIT LEAKING. REPLACED PCU AS PER WORK CARD 51143.