The challenges facing the small regional carriers are daunting, affecting more than just Great Lakes Airlines out of Fort Dodge. The recent federal changes to the requirements for airline pilots are adversely affecting Great Lakes right now - more significantly than other carriers. But as with many new regulations, the full unintended effects are not realized until there is a passage of time. One of the changes went into effect on Aug. 1, 2013, and the other significant change just went into effect on Jan. 4 had to do with time off for pilots between flights. While these changes are affecting the regional carriers and small airports the most right now, the impact is starting to cause issues for large carriers operating at large airports, which led to the canceled flight woes of JetBlue and large airlines during the first week of 2014 when the snow and cold caused delays.