What was found
DTW - DURING TAKEOFF, CAPTAINS AIRSPEED READ 75 KNOTS WHEN F/O'S READ 80 KTS WHEN F/O'S AIRSPEED READ 115KTS, CAPTAINS READ 100KTS, TAKEOFF ABORTED. MAX BRAKE TEMPS 20 DEGREES. REMOVED AND REPLACED F/O'S AIRSPEED INDICATOR, SYSTEM GROUND CHECKED GOOD. (M)