The article says
“The aircraft was identified on the Flightradar 24 tracking website as an Airbus 321.”
I’m not 100% sure where you look up the operation and maintenance manual for that sort of hardware; so I’m not sure how to check the door configuration on those. The wikipedia article specifically calls out a change from overwing exits to front/rear door exists between the 320 and 321; but I’m not sure if that is purely a matter of location or whether overwing vs. door dictates different opening behavior.
