As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB-OUT, EN ROUTE FROM LAX, LOST NR 1 HYDRAULIC SYSTEM. MAINTENANCE AT JFK FOUND HYDRAULIC PRESSURE LINE SHEARED INSIDE NR 1 PYLON. REMOVED AND REPLACED HYDRAULIC LINE, PRESSURE CASE DRAIN AND RETURN FILTERS. ALSO, REPLACED ADP AND EDP PER MM 2-11-17. OPS AND LEAK CHECKS OK. AIRCRAFT RETURNED TO SERVICE. (X)