As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT CREW REPORTED THE ICE DETECTOR 2 FAILED. OPERATIONS WERE CONTINUED ON MEL 30-80-1. THE MAINTENANCE TEAM TROUBLESHOT AND FOUND THE #2 ICE DETECTOR INOP. THE DETECTOR WAS REMOVED AND REPLACED WITH AN INSPECTED UNIT. OPS CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.