Narrative:

We heard and felt a loud rumble in the cockpit climbing through FL320 on our way to FL360. The flight attendant (flight attendant) immediately called up asking if we heard the sound and to state 'the cabin is filling with a white mist.' without an ECAM (electronic centralized aircraft monitor); we immediately shut down pack 2 per the [company's] fumes procedure. The flight attendant called back up stating the mist was dissipating but that the rear flight attendant smelled smoke that correlated with a burning wire aroma. We [advised ATC] and initiated a diversion to ZZZ.upon landing in ZZZ; crash and fire rescue inspected the aircraft and found no heat signatures. We taxied to the gate and subsequently deplaned. ZZZ maintenance found the pack 2 acm to have seized up.

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Original NASA ASRS Text

Title: A319 First Officer reported that after hearing and feeling a loud rumble in the cockpit; the cabin started filling up with white smoke.

Narrative: We heard and felt a loud rumble in the cockpit climbing through FL320 on our way to FL360. The FA (Flight Attendant) immediately called up asking if we heard the sound and to state 'the cabin is filling with a white mist.' Without an ECAM (Electronic Centralized Aircraft Monitor); we immediately shut down PACK 2 per the [company's] Fumes procedure. The FA called back up stating the mist was dissipating but that the rear FA smelled smoke that correlated with a burning wire aroma. We [advised ATC] and initiated a diversion to ZZZ.Upon landing in ZZZ; crash and fire rescue inspected the aircraft and found no heat signatures. We taxied to the gate and subsequently deplaned. ZZZ maintenance found the PACK 2 ACM to have seized up.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.