As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - INFLIGHT DFW-CDG. CREW REPORTED LEFT HYDRAULIC SYSTEM QUANTITY LOST. DIVERTED JFK LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. FOUND YAW DAMPER LEFT SERVO RETURN ELBOW CRACK. REPLACED FITTING. SYSTEM GROUND CHECKED NORMAL OPERATION.