Originally Posted by
Delta 764
The 717s will mostly be used on short hauls replacing DC-9s and upsizing some existing CRJ-900 and Embraer 175 routes, which in turn will be used to replace 50-seat RJ flying.
The 737-900ERs are intended to replace older 752s (including the 75Ns), A320s, and domestic 763s.
That's a poor generalization.
ATL peaks at 40-something 65/76 seat regional jets this summer, and the 717 isn't a candidate to replace many of these -- or the remaining 50-seat regional jet -- flights from ATL. Undoubtedly, the 717 will replace equipment on flights currently operated with other, larger mainline equipment. Capacity will be offset through additional frequency as well as shifts in capacity to DTW & MSP as DL begins rebuilding its network with the mass exodus of 50-seat jets.