As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON DESCENT INTO MSP AIRSPEED ON BOTH SIDES AND STANDBY A/S INDICATOR WENT TO ZERO. BOTH NR 2 VSI ALSO MALFUNCTIONED. MX DRAINED ALL PITOT STATIC POSTS AND PITOT DRAINS. INSPECTED PROBES. PURGED PITOT/STATIC PROBE AND DRAIN. TESTED ALTIMETERS, A/S INDICATORS, AND VSI.