As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE AIRCRAFT WAS GROUNDED. IAS DISAGREE LIGHT ANNUNCIATED IN FLIGHT AT FL280 WITH ENGINE ANTIICE AND PITOT HEAT ON. BOTH CA AND FO DETERMINED TO BE INOP AS PER QRH. THE FLIGHT DECLARED AN EMERGENCY AND LANDED DFW WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED FO`S PITOT TUBE PER AMM 34-11-01. ACCOMP REQ TESTS.