As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3136 - RDU TO EWR - CREW REPORTED STRONG ELECTRICAL STRONG SMELL IN THE COCKPIT. CREW DIVERTED FLIGHT TO IAD AND LANDED UNEVENTFULLY. IAD-MX PERFORMED OPERATIONAL TEST OF ELECTRICAL AND AIR SYSTEMS AND COULD NOT DUPLICATE THE PROBLEM. ACFT WAS APPROVED TO RETURN TO SERVICE.