As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CRUISE FLIGHT PILOT SMELLED SOMETHING BURNING. SMELL FROM BAGGAGE COMPARTMENT. MAINTENANCE FOUND LOOSE CONNECTIONS AT STARTER RELAY TO LINE CONTROL RELAY. ARCING OCCURRED AT STARTER RELAY TERMINAL A2 AND AT LINE CONTROL RELAY TERMINAL A2 ALSO FOUND BURNED AND MELTED HEAT SHRINK.