As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT AND MEDICAL PERSONNEL ALL SMELLED SOMETHING BURNING AND THE ODOR BECAME MORE INTENSE IN THE AFT CABIN. ONE OF THE MEDICAL PERSONNEL STARTED TO SEE SMOKE IN THE AFT CABIN AREA AND NOTICED A FLICKERING OF THE LIGHTING ON THE MEDICAL EQUIPMENT. SWITCHED THE EMS 110VAC INVERTER OFF AT THAT TIME. TURNED OFF THE AIR CONDITIONER AND MEDICAL OXYGEN. OPENED UP THE SLIDE WINDOW AND VENTS. THE SMOKE AND ODOR STARTED TO DISSIPATE ON DESCENT. AT LANDING, INITIATED AN EMERGENCY SHUTDOWN PROCEDURES. STATIC INVERTER FAILED.