As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT BURNING SMELL & SMOKE WAS NOTICED BY FLIGHT CREW IN THE FLIGHT COMPARTMENT. AS A PRECAUTIONARY MEASURE, THE MASTER SWITCH WAS TURNED OFF WHICH ALLEVIATED THE ACCUMULATION OF ADDITIONAL SMOKE & SMELLS. THE ACFT LANDED WITHOUT INCIDENT. PERSONNEL DISCOVERED THAT THE MAIN STARTER CABLE HAD CHAFED INTO THE FIREWALL METAL SHIELD PN S1095-4.