As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: CAPTAINS AIRSPEED UNRELIABLE DURING ICING CONDITIONS. 60 KNOTS VARIATION WITH AIRSPEED AURAL WARNING. EXITED ICING CONDITIONS AIRSPEED INDICATIONS RETURNED TO NORMAL AFTER 2 MINUTES, REPLACED WINDOW / PITOT HEAT MODULE PER AMM 30-41-41.