As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#163, JFK-SRQ. (AIRCRAFT DECLARED AN EMERGENCY AND PERFORMED AN AIR TURN BACK TO JFK). ' YELLOW HYDRAULIC SYSTEM OVERHEAT AFTER TAKEOFF; R/S REF TSM 29-13-00. REMOVED AND REPLACED CHECK VALVE Y REF AMM 29-24-21. ON OPS CHECK OF ENG #2 EDP. ENGINE-DRIVEN PUMP WORKS NORMALLY ON SELECTION OF ELECTRIC PUMP YELLOW. NO JOY. POSSIBLE YELLOW ELECTRIC PUMP DAMAGED FROM REVERSE FLOW REF TSM.'