Ok, Im just trying to straighten a few things out here. From what I have gathered (
http://flighttraining.aopa.org/members/library/far/), 121 is airline stuff and 135 is,well, either charter commuter, or on-demand operations (can anyone define these terms?). Are there any other section numbers (what do we techinally call these numbers) that I should know, as they relate to different types of jobs? Also, where does corporate flying and freight flying fit in? Thanks for the help!