Not sure if you guys were aware of this or not, but on the Timetables coming out on the 22nd of Aug, Northwest is sending the DC-9 back to Cedar Rapids!
It looks like 2 flights per day
#1523 5:12am-6:14am D9S X7
#409 12:50pm-1:53pm D9S X67
#1491 11:11am-12:10pm D9S X67
#1750 10:15pm-11:12pm D9S X6
The ARJ is completely off-line at both Des Moines and Cedar Rapids, but still flying at other stations. I heard CID was doing well in terms of passenger enplanements this year and apparently it's been good enough for NW to put mainline aircraft with first class cabins back on this route. It'll be nice to see the venerable DC-9 back in the Iowa Technology Cooridor, haha.