Originally Posted by
jwes
This is just my interpretation:
American Eagle is a Major airline (because as per definition we annually gross more than a Billion $ a year, not treated like one though). We are the "Feeder airline" exclusively to American but we also fly international "Flag" rules to Canada, Mexico, Caribbean. We also do "Unscheduled Charters" or private flights(Cuba), which puts us under yet another set of rules and regulations (although only minor). I hope this confuses you more as it does me....Good luck. Wes
I think a supplemental carrier would be someone like Business Express Airlines (gone but not forgotten) They would fly feed for Delta, Northwest, and American.
I believe BizEx was still a 121 domestic carrier, as is American, American Eagle, Delta, SkyWest, et al. I believe a supplemental carrier is kind of a grey area between 121 and 135 and I am not all to familiar with it. Don't fool yourself; even though a regional (which may itself be considered a major) may feed a major, it is still governed by the same rules (assuming it operates under 121).
You can go to the FAA's website and look it up under part 121, should have the definitions in there for you.