As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - INFLIGHT ORD-LGA. CREW REPORTED LEFT HYDRAULIC PRESSURE LOSS. EMERGENCY DECLARED DIVERTED JFK LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT ENGINE DRIVEN PUMP, SPOILER SHUT-OFF VALVE AND TRANSFER PUMP. SYSTEM GROUND CHECKED NORMAL OPERATION.