Originally Posted by
UAX_Brasilia
Well, it's a new aircraft model with a new certificate type, so not really sure how you make any of these claims simply because it's based on a CR7.
Pretty easily, actually. The CRJ-550 is fundamentally a CRJ-700, with a supplemental type certificate and paperwork updates to reconfigure the cabin and reduce certified gross weights to comply with United's pilot scope clause.
It's not a "new" aircraft model, not a "new" type certificate, and I have seen no indication that these are actually new airplanes. I'd be shocked if they were.