As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW DIVERTED, WITH AN ELECTRICAL BURNING SMELL IN THE BACK OF THE BUSINESS ELITE CABIN. THE LANDING WAS UNEVENTFUL AND MX FOUND WIRING CHAFED ON THE SEAT POWER SUPPLY AT 5E. THE WIRING HARNESS THAT WAS CHAFED WAS REPLACED AND THE SEAT OPERATED NORMALLY THEREAFTER. (DL76G101497)