What was found
DURING TAKEOFF ROLL, A/T DISCONNECTED. ATTEMPTED TO REARM DURING CLIMBOUT BUT DISCONNECTED AGAIN, WILL NOT STAY ENGAGED. THE AIRCRAFT WAS GROUNDED. MAINTENANCE FOUND LEFT THROTTLE SWITCH MPN 254A1150-13 INSTALLED ON THE LEFT SIDE OF THE THROTTLE SYSTEM AND ON THE RIGHT THROTTLE SYSTEM WAS MPN 254A1150-10. IAW WORKCARD 76-94-02, IF MPN 254A1150-13 IS INSTALLED ON THE LEFT THROTTLE, MPN 254A1150-10 CANNOT BE INSTALLED ON THE RIGHT THROTTLE. REMOVED AND REPLACED THE MPN 254A1150-10 SWITCH WITH MPN 254N1150-16. OPS TEST GOOD.