As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: CAPTAIN HAD NO AIRSPEED INDICATION AT THE 80 KNOT AIRSPEED CHECK ON TAKEOFF. REJECTED TAKEOFF. TROUBLESHOT PER TSM 34-11-00-810-804-A. REPLACED AIR DATA AND INERTIAL REFERENCE UNIT 1 PER AMM 34-12-34 (AALA202107133352). REPLACED AIR DATA MODULE 19FP1 PER AMM 34-11-17 (AALA202107134418).