As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 ENGINE LOW PRESSURE HYDRAULIC (A) SYSTEM LIGHT ILLUMINATED WITH ASSOCIATED A SYSTEM QUANTITY DECREASED TO ZERO. FOLLOWED POM PROCEDURE NO OTHER INDICATION. MADE UNEVENTFUL LANDING. REPLACED O-RING AND FITTING ON A SYSTEM AILERON AUTOPILOT CONTROL ACTUATOR. LEAK CHECK OK. ALSO REPLACED CASE DRAIN FILTERS AND PERFORMED LEAK CHECK.