As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DFW - FLT 3508 - EN ROUTE TO DFW CAPTAINS EADI WENT BLANK WITH AN ELECTRICAL SMELL THAT DISSIPATED AFTER ABOUT FIVE MINUTES. ALSO NOTED THE ADI BREAKER HAD POPPED. MAINTENANCE REMOVED AND REPLACED THE NR 1 AND 2 ADI''S AND THE NR 1 DPU. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. REF SIMA3301(M)