As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FT # 227, EWR-JFK. EMERGENCY DECLARED. DIVERTED TO JFK. AVIONIC SMOKE ECAM WITH ASSOCIATED LOUD NOISE AND ELECTRICAL BURNING SMELL. AFTER LANDING NOTED CABIN EXTRACT FAN CIRCUIT BREAKER POPPED; R & R AVIONIC FAN EXTRACT IAW AMM 21-26-51. OPS CHK GOOD. NO DEFECTS NOTED. PERFORMED INSPECTION FOR ELECTRICAL BURNING SMELL IN COCKPIT IAW TSM 24-00-00-810-823-A. NO FURTHER DAMAGE DETECTED. A/C OK FOR SVC