As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR---CO3145, CREW REPORTED STRONG ODOR OF AN ELECTRICAL NATURE DURING LAST HOUR OF FLIGHT. EWR MAINTENANCE PERFORMED VISUALLY INSPECTION OF ELECTRICAL RELAY RACKS IAW ATR42 WIRING MANUAL CHAPTER 20 CHECKS GOOD. VISUALLY INSPECTED ENGINE(S) NR 1 AND 2 BLEED DUCTING, RAN ENGINES WITH NR 1 PACK ON. ALL CHECKS GOOD IAW ATR42 JIC 72-00-00. AIRCRAFT RELEASED TO SERVICE.