As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: ON DESCENT INTO BNA, SPEED TRIM FAIL LIGHT ILLUMINATED FOLLOWED 2 MINUTES LATER WITH AN ELECTRICAL BURNING SMELL IN THE COCKPIT. FLIGHT DECLARED AN EMERGENCY, LANDING SAFELY. REPLACED RIGHT ADIRU PER AMM 34-21-01. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK. ACCOMPLISHED SMOKE ODOR FUME JOB CARD 08L00021001. NO ODOR OR FAULTS NOTED.