As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COPILOTS A/S INDICATOR WAS NOT INCREASING ABOVE 35 KTS. PILOTS INDICATOR WAS INDICATING 80KTS. CHECK TWICE WITH SAME RESULTS. FOUND AIRSPEED LAGGING ON CO-PILOTS SIDE INCREASING AND DECREASING LEAK CKS GOOD. SUSPECT BLOCKAGE. DISCONNECTED AND FLUSHED LINE. REMOVED BLOCKAGE. RECONNECTED LINE LEAK AND OPS CHECK GOOD. IAW MM 34-11-00 LEAK CHECK IAW FAR 91.411.