As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JFK - INFLIGHT RIGHT LANDING GEAR WOULD NOT EXTEND. EXTENDED RIGHT LANDING GEAR MANUALLY. LANDED JFK WITHOUT INCIDENT. REPLACED RIGHT HAND MAIN LANDING GEAR DOWN (RETURN) LINE RESTRICTOR. REPLACED RIGHT HAND GEAR SEQUENCE VALVE AND UPLOCK ACTUATOR. SYSTEM GROUND CHECKED NORMAL OPERATION.