As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: STRONG HOT ELECTRICAL SMELL ON DESCENT THROUGH 13,000 ONLY NOTICEABLE IN THE FLIGHT DECK. MAINTENANCE FOUND THE APU START FUSE (6KA) BURNT / BLOWN IN THE FLIGHT DECK AND REPLACED IT PER AMM 49-42-00-960-003-A. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED WITH NO ODORS BEING NOTED.