DTW trips are all over the place for March. Some lines are around 71-72 hours with 15-16 days off. Then there are others with a little over 85 hours. The least days off I saw we're 14 and most was 16-17 I think. Usually a mix of day trips and 3 and 4 day trips. For March there were 40 hard lines for 59 total FO's. Some relief lines and the rest Reserve lines. This is a typical month here in DTW. Hope this helps. As far as stability I would say DTW is a as stable as any of our bases but as others have said that's always subject to change!