As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GOT ALT 1 FAIL ON ECAM ABOUT 20 TIMES ON THIS FLIGHT. SWITCHED TO A/P NR 2 AND ADC NR 2. ALTIMETER NR 1 WAS INTERMITTENT ON THIS FLIGHT. REMOVED AND REPLACED CAPTAINS MAIN ALTIMETER INDICATOR PER MM 34-12-21-04. PERFORMED BITE TEST OF ADS NR 1 PER MM 34-10-00-5 AND BAROMETRIC CORRECTION TEST OF ADS NR 1 PER 34-10-00-5. ALL SYSTEMS PASSED.