What was found
ON INITIAL CLIMB-OUT, PASSING APPROX 11000 FT MSL, A/T SYSTEM DISENGAGED. WHEN THAT HAPPENED, NOTICED A FLUCTUATION IN NR 1 FUEL FLOW. CONTINUED CLIMB WHILE EVALUATING PROBLEM. NR 2 FUEL FLOW WAS APPROX 12000PPH NR 1 WAS FLUCTUATING BETWEEN 7000 PPH AND 15000 PPH. REPLACED THE NR 1 ENGINE, PERFORMED HIGH POWER RUN PER A300 JRH, ALL CHECKS GOOD, OK FOR SERVICE.