Narrative:

Captain (ca) was pilot monitoring. First officer (first officer) was pilot flying. We were a very light (empty) 767. Shortly after setting takeoff thrust the airspeed came alive on the captains side. The speed was accelerating slowly on the captains airspeed indicator but given the substantial reduction of thrust not alarmingly so. As 80 knots (on the captains side) is approaching the first officer announced 'V1'. I quickly cross checked airspeed indicators noted the discrepancy and rejected the takeoff. At the time of the reject the captains airspeed said 80 knots. I believe the first officer airspeed was at 110. V1 was 107. After the reject began an airspeed flag appeared on the captains airspeed indicator speed window. Then quickly went away. The entire evolution happened very quickly. I did not have time to determine which airspeed was correct with no flags being shown. I knew we had plenty of runway to reject (light aircraft) at 110 knots worst case scenario. I knew we would not get in the air at 80 knots. Even after the reject it was not clear which one was bad (no flags shown). After clearing the runway we returned to the ramp. We had 2 pilots with 2 very different perspectives on the aircraft speed. We have an 80 knot call for cross checking the speeds but in this case the captains airspeed wasn't there yet; and the first officer airspeed was increasing so fast it was not caught in time. The first officer calling out V1 because I had not called it (again captains airspeed approaching 80 knots) gave me enough time to acknowledge the discrepancy; evaluate runway remaining; and make a decision. In retrospect; just prior to the 80 knots; I had mentally noted that we were not accelerating as fast as I was used to with an empty 767. We had started reducing are performance considerably with the introduction of aerodata so I dismissed it as normal acceleration given the reduced power settings.

Google
 

Original NASA ASRS Text

Title: Boeing 767 flight crew reported a ejected takeoff due to airspeed indications discrepancy during takeoff roll.

Narrative: Captain (CA) was pilot monitoring. First Officer (FO) was pilot flying. We were a very light (empty) 767. Shortly after setting takeoff thrust the airspeed came alive on the Captains side. The speed was accelerating slowly on the Captains airspeed indicator but given the substantial reduction of thrust not alarmingly so. As 80 knots (on the Captains side) is approaching the FO announced 'V1'. I quickly cross checked airspeed indicators noted the discrepancy and rejected the takeoff. At the time of the reject The Captains airspeed said 80 knots. I believe the FO airspeed was at 110. V1 was 107. After the reject began an Airspeed flag appeared on the Captains airspeed indicator speed window. Then quickly went away. The entire evolution happened very quickly. I did not have time to determine which airspeed was correct with no flags being shown. I knew we had plenty of runway to reject (light aircraft) at 110 knots worst case scenario. I knew we would not get in the air at 80 knots. Even after the reject it was not clear which one was bad (no flags shown). After clearing the runway we returned to the ramp. We had 2 pilots with 2 very different perspectives on the aircraft speed. We have an 80 knot call for cross checking the speeds but in this case the Captains airspeed wasn't there yet; and the FO airspeed was increasing so fast it was not caught in time. The FO calling out V1 because I had not called it (again Captains airspeed approaching 80 knots) gave me enough time to acknowledge the discrepancy; evaluate runway remaining; and make a decision. In retrospect; just prior to the 80 knots; I had mentally noted that we were not accelerating as fast as I was used to with an empty 767. We had started reducing are performance considerably with the introduction of aerodata so I dismissed it as normal acceleration given the reduced power settings.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.