As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT ABORTED TAKEOFF DUE TO LOSS OF FIRST OFFICERS AIRSPEED INDICATION. FLIGHT CREW ABORTED TAKE OFF AT 90 KNOTS DUE TO A FLAG IN VIEW ON THE FIRST OFFICERS MACH AIRSPEED INDICATOR. LINE MAINTENANCE REPLACED THE FIRST OFFICERS MACH AIRSPEED INDICATOR.