As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FL 370 IAS CAUTION INSCRIPTION ON BOTH IAS INDICATORS. DIFFERENCE OF KIAS AFTER SEVERAL MINUTES, FIRST OFFICER AIRSPEED INDICATOR DECREASED TO 10 CA IAS STANDBY AT 260 KIAS. DECLARED EMER & DESCENDED IAS INCREASE PASSING FL 250 & APPEARED NORMAL PASSING FL 210. TRANSFERRED TO NRWC 648-MIA-01933. R & R ADC NR 2 IAW 34-15-01, NO HELP.