What was found
ON TAKEOFF ROLL AT APROX 1100-120KTS ALL PERFORMANCE DATA DUMPED V1,VR DISAPPEARED SPEED DATA ONLY SHOWED V2 BECAUSE IT WAS SET IN SPEED WINDOW. COMMANDED ROTATE AT V2 & WE CLIMBED OUT AT V2 20. SET 240 IN WINDOW FOR CLEAN UP ON SCHEDULE AT 3500 FT. ENGAGED AUTOPILOT WHERE IT MAMED A PITCH OVER INTO A DIVE, NOT THE CLIMB THAT WAS COMMANDED. DISENGAGED THE AUTOPILOT & RE-GAINED CNTL OF THE ACFT. WE CONTROLLED OVER CLIMB OUT & SLOWLY THE DATA RETURNED INTO THE FMS. PERFORMED GPWS GND TEST & AIMS, FMCS TEST IAW MM 34-46-00-5 & 34-61-00-5, ALL GND TEST PASSED. FMCS CHECKED OK. RELOADED ALL SOFTWARE OF RT AIMS CPM & STD IAW MM 31-41-05-2. PERFORMED AFDC SYS GND TEST IAW MM 22-11-00-5 & PASSED. PERFORMED TMCF SYS GND TEST IAW MM 22-31-00-5 & PASSED. PERFORMED RT AIMS & FMCS GND TEST IAW MM 34-61-00-5 & PASSED.