As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON TAKEOFF ON 18L, ECAM INDICATED A MAIN DECK CARGO FIRE. RETURNED TO RNWY 18C WITH AN OVERWEIGHT LANDING OF 311.0. DURING T/S IAW TSI 21-60/0903, NR 1 PACK FLOW INDICATION INDICATING FULL FLOW WITH PACK OFF. FOUND NR 1 PACK FLOW TRANSMITTER (13WV) DAMAGED. REMOVED, REPLACED AND TESTED NR 1 PACK FLOW TRANSMITTER (13WV) IAW MM 21-11-12-04. LEAK AND OP'S CHECK NORMAL.