Narrative:

During takeoff roll; immediately after setting takeoff power; captain's airspeed and altitude indications started varying greatly and rudder ratio was annunciated in the EICAS and on overhead panel. A rejected takeoff maneuver was accomplished; commencing at approximately 100 KIAS on the first officer's indicators. We exited the runway; referenced the QRH; and taxied back to the chocks. Maintenance said it may be an air data computer failure.

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Original NASA ASRS Text

Title: B757-200 Captain reported a rejected takeoff due to multiple erratic aircraft indications on takeoff roll.

Narrative: During takeoff roll; immediately after setting takeoff power; Captain's airspeed and altitude indications started varying greatly and Rudder Ratio was annunciated in the EICAS and on overhead panel. A rejected takeoff maneuver was accomplished; commencing at approximately 100 KIAS on the First Officer's indicators. We exited the runway; referenced the QRH; and taxied back to the chocks. Maintenance said it may be an Air Data Computer failure.

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.