Innuendo - and indeed I do see the Frisbee fairing - which is also fitted to some -40s, 50s, 100s, 150s, 200s and 250s! But wait! -500s don't have doors aft of the wing, do they? Well yes, some do (look at ATA's ex RJ aircraft, which were modified with 4L/R doors from 'longbody' aircraft. I don't know if the Canadian DOT requires the same mod on Air Transat's high density fit.
Which was the reason I asked the question!
