As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY DIVERT DUE TO UNRELIABLE AIRSPEED ON ALL 3 AIRSPEED INDICATORS AT FL 300. THE ISSUE DID NOT CLEAR UP UNTIL DESCENDING THROUGH FL 190 APPROXIMATLY. DECLARED EMERGENCY FLIGHT CANCELED.-C/A-INSPECTED PITOT DRAIN PROT AND EMPTIED MOISTURE IAW E145 AMM 34-13-00-690-801. PERFORMED ADC OPS CHECK IAW E145 AMM 34-15-00-05. OPS CHECK GOOD. ACFT OK FOR SERVICE