As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOST NR 2 HYDRAULIC QUANTITY AND PRESSURE, AFTER 20 MINUTES HYDRAULIC PUMP CAUTION LIGHT ILLUMINATED. INSPECTED, FOUND O-RING ON UNION OF GROUND HYDRAULIC LINE LEAKING. REPLACED O-RING, REMOVED AND REPLACED HYDRAULIC PUMP. OPERATIONAL CHECKED SYSTEM IAW MM. AIRCRAFT RETURNED TO SERVICE. (X)