As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON LAST APPROACH, STRONG ELECTRIC BURNING SMELL AT HIGH POWER SETTING (COCKPIT ONLY). LOWER POWER AND TAXI IN, NO SMELL. AVIONICS FAN OFF, NO HELP. TROUBLESHOT ENTIRE COCKPIT ELECTRICAL SYSTEM AND COMPLIED WITH VISUAL INSPECTION. COULD NOT DUPLICATE ON GROUND.