As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING LANDING ROLL OUT IAS MISMATCH MESSAGE APPEARED, NR 1 IAS WAS 30 KTS HIGHER THAN NR 2 IAS. AFTER PARKING AT THE ARRIVAL GATE, NR 1 IAS INDICTED 38 KTS AND TAS WAS SCROLLING. NR 2 IAS STEADY AT 30 KTS (NORMAL). MAINTENANCE PURGED NR 1 PITOT/STATIC LINES THEN RECONNECTED. NR 1 IAS CONTINUED TO FLUCTUATE AT 38 KTS FOR SEVERAL MINUTES THEN DROPPED TO 30 KTS AND BECAME STEADY. NR 1 ADU REPLACED.