What was found
AIRCRAFT WAS GROUNDED: ON TAKEOFF ROLL AT 50 KIAS: CAPTAINS AIR SPEED INDICATOR SHOWED ZERO. FIRST OFFICERS SHOWED 50 KIAS. MULTIPLE ECAM MESSAGES DISPLAYED. TWO OF THEM WERE AUTO PILOT OFF AND AUTO THRUST OFF. **SUPPLEMENTAL REPORT FOR AALA202108172733: MAINTENANCE FLUSHED BOTH TOTAL PRESSURE LINES; THE CAPTAINS HAD SOME DEBRIS IN THE CAPTAINS PITOT AND THE FIRST OFFICERS PITOT WAS CLEAN. MAINTENANCE ALSO REPLACED THE FIRST OFFICERS AIR DATA MODULE PER AMM 34-11-17. (AALA202108188250) A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED PER AMM 34-13-00-790-002-A AND 34-13-00-720-009-B ** (CLOSED)