Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Published Material / Policy
Flight Crew Rejected Takeoff; Flight Crew Returned To Gate; General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
An initial takeoff roll; my copilot said airspeed alive and I said checked; then my copilot said 80 knots and I said checked and then immediately got a indicated airspeed disagreement on the Captains airspeed indicator the copilot had the same thing and I rejected the takeoff.  We notified Tower and returned back to the gate.IAS DISAGREE on both the Captain and Copilot IAS.I return to the gate and turn the aircraft over to Maintenance. I also took the passengers off the airplane and put them into the terminal building where it was much cooler.
On initial takeoff roll I called out airspeed alive then 80 knots.  The 'IAS DISAGREE' indicator cam on and I announced 'airspeed disagree'.  The Captain rejected the takeoff.  We notified the Control Tower and exited the runway; back to the terminal.Visual detection 'IAS DISAGREE' in yellow letters.IAS DISAGREE indications on both displays.Performed rejected takeoff; and returned to the gate where maintenance was performed.
B737 flight crew reported airspeed disagreement on takeoff roll; causing a rejected take off and a return to gate for maintenance.