As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 PACK IS ALREADY MEL'D AND WHILE TAXING NOTICED PACK 2 KICKING OFF WITH NO MESSAGE IVE HAD ISSUE BEFORE AND PACK WORKED IN FLIGHT BUT AFTER TAKEOFF RECYCLED PACK AFTER TO-1 AND AFTER 5 SECONDS GOT PACK 2 VALVE CLOSED AND TRIED A COUPLE RESETS AND SAME THING HAPPENED. REPLACED NR 2 DUCT, PRIMARY INLET IAW AMM 20-60-01 OPS GOOD