As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3286 THE DURING CRUISE THE CREW REPORTED A DUAL TRANSPONDER FAILURE AFTER DEPARTURE. THE AIRCRAFT RETURNED TO BJX. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS REMOVED FROM SERVICE. REPLACED NR 1 INTEGRATED COMMUNICATION UNIT VHF IAW AMM 23-00-01. THE OPERATIONAL CHECK WAS GOOD IAW AMM 34-52-00. THE AIRCRAFT WAS RETURNED TO SERVICE.