What was found
AT LIFT OFF ON TAKEOFF, THE FOLLOWING OCCURRED. FCP WENT BLANK. ATS LEVER TRIPPED OFF. INSTRUMENTATION ON BOTH SIDES DISAPPEARED, EXCEPT FOR ADI'S & SPEED SCALES. FMS ON BOTH SIDES WENT TO INDEPENDENT OPERATIONS, FCP INTERMITTENTLY RE-ILLUMINATED, BUT SETTINGS FLUCTUATED & FCP WOULD AGAIN GO BLANK. MAINTAINED VMC & RETURNED, TOTAL TIME AIRBORNE, 10 MINUTES. FOUND THE GEN 1 9XU LINE CONTACTOR OVERHEATED, ALL OTHERS WERE COOL. REMOVED AND REPLACED THE 9XU GEN 1 LINE CONTACTOR USING THE A300-600 AMM REF 24-22-15-04.