As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A HIGH POWER RUN, THE ODOR OF SOMETHING BURNING IN THE COCKPIT. LEFT DISTRIBUTION BOX HOT TO THE TOUCH. RAN UP AIRCRAFT AT HIGH POWER AND INSPECTED THE LT AND RT RELAY SUPPORT PANELS AND DISTRIBUTION BOXES. PERFORMED A VISUAL INSPECTION OF AREAS. NO DEFECTS NOTED. OK FOR SERVICE.