As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
JAX - FLIGHT 2436, THE CREW REPORTED A BURNT RUBBER / ELECTRIC TYPE SMELL THROUGHOUT THE AIRCRAFT FROM DEPARTURE THROUGH 15000. THE AIRCRAFT RETURNED TO JAX, LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED GVI OF PACK DUCTING WITH NO DEFECTS, INSPECTED THE CABIN LIGHTING OPERATIONALLY TESTED NR 1 & 2 PACKS AND PERFORMED ENGINE RUNS ALL WITH NO DEFECTS NOTED. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.