As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT ACFT LOST FACS & EXPERIENCED DOWNGRADED NAVIGATION. EMERGENCY DECLARED. AIRSPEED DISAGREE OCCURRED BETWEEN ADR 1 AND ADR 2. ADIRU NR 1 WAS REPLACED AND NR 2 AIRSPEED FAULT WAS PRESENT. SHOP FINDINGS FOUND THE UNIT REMOVED FROM POSITION 2 RECORDED AN INVALID LEFT STATIC PRESSURE INPUT. ADIRU NR 2 WAS REPLACED. OPERATIONS CHECK NORMAL.