Pretty sure it can. At least on most routes. NAS is about the same distance as MIA and there's a lot of the Caribbean juat a very short additional distance from there. PR is around 4-5 hours depending on season and if you are WATRS capable or not (just one hour from land) but the E series might be able to do it either way.

Don't fret though, those RJ's are saving our bacon. Because of them and Alaska, we can get a 5/4/4/4 contract that puts real money in our pockets.

So the question remains, how much (if any) net mainline growth is this slot swap?

As our seniority list continues to shrink with retirements and we dicipline ourselves with capacity while all our outsource partners grow (large DCI jets, AS, AF/KLM, etc) and we become more expensive in the process, causing the beancounters to drive even more of our product off our list, can we at least admit that our management friendly scope is harming us? The first step is admitting we have a problem. Let's just start there shall we? Throwing around broad concepts like "feed" and defending mass outsourcing because "its legal IAW our CBA" rings more hollow by the press release.