I think when this all started there were 218 50 seat jets that needed to be eliminated to reach the 125 number delta has to be at by 2015. Skywest and Asa have given up 66. I'm not sure if comairs remaining 13 were already accounted for but we will say they weren't so 66+13=79. 218-79=139 left
Chautauqua operates 24 emb 145s
Pinnacle operates 140 200s
Skywest and Asa operate 90 more 200s after the trade in? Not sure about that one.
If pinnacle parked all 140 200s there would be 114 50 seat jets left so the math is not perfect. I'm sure there are variables we are not even thinking about