As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED THE ADSB SYSTEM WAS INTERMITTENT. THE MAINTENANCE BASE TROUBLESHOT AND FOUND THE ADSB ANTENNA AT FAULT. THE DEFECTIVE WAS REMOVED AND A NEW ANTENNA WAS INSTALLED. OPS CHECKS WERE SATISFACTORY, AND THE AIRCRAFT WAS RETURNED TO SERVICE.