What was found
PASSING FL 180, ALTIMETERS 1 AND 2 FAILED, RED FLAG IN BOTH INTRUMENTS. CAME BACK BUT INTERMITTENT. CHECKED LAST FLIGHT FAULTS, ADC 2 FAULTED SEVERAL TIMES ON LAST AND PREVIOUS FLIGHT LEGS. REMOVED AND REPLACED THE NR 2 ADC IAW AMM 34-11-34-04. OPS CHECKED NR 1 AND 2 ADC, BOTH CHECKED GOOD. ALSO, FMC 1 FLAGGED FOR PAST SEVERAL FLIGHT LEGS. REMOVED AND REPLACED THE NR 1 FMC IAW AMM 34-68-34-04.