That's what I thought until I read the safety leaflet.
Ah ok - Avro RJ to be accurate; can't tell you if it's an 85 or 100 although I'm sure someone more well versed in recognising turbofan exhausts could. Courtesy of Brussels Airlines I presume.
Well beaten to identifying the RJ, would have been an easy spot for me having served my apprenticeship building them, and worked on some of the Swiss Air jets. I've yet to fly on one though