As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH 8,000 MSL, WHISTLE AND SMOKE COMING FROM LONG A/C VENT. NO ECAM CHECKED AIR COND PAGE LOWER SCREEN AIR WAS 100+ FROM PACK ONE. LANDED AND MECHANIC HAD TURNED PACK 1 ON AND OFF AND SMELLED SMOKE. PERFORMED TROUBLESHOOTING OF PACK 1 OVERHEAT MESSAGE PER TSM 21 -61-00-810-801. CONFIRMED NR 1 PACK TO BE SOURCE OF SMOKE. NR 1 PACK DEFERRED PER MEL 21 -520 LD.