As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#1986, RDU-JFK. (AIRCRAFT DECLARED AN EMERGENCY ) 'Y HYD SYS OVERHEAT (RSV) ECAM AND QRH LIGHT OUT AFTER 30 MINS; REMOVED AND REPLACED PRESSURE SWITCH 3151GN PER TSM 29-13-00-810-816A AND AMM 29-32-12-000-003A. OPS CHECK GOOD. LEAK CHECK GOOD.'