As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NO AIRSPEED ON F/O'S INDICATOR ON T/O ROLL. AT BLOCK IN, FOUND F/O'S AIRSPEED FLAG IN VIEW. CYCLED F/O'S MACH AIRSPEED C/B PULLED. PERFORMED AIR DATA SYSTEM TEST PER MM 34-11-041-4. FAILED OP'S TEST. REMOVED AND REPLACED F/O'S MACH AIRSPEED INDICATOR PER MM 34-11-000-5.