I'm just curious as to how many aircraft type ratings pilots have with the US majors. For instance, I know that at DL, pilots are qualified to fly within the 767 family (and I believe the 757 as well) and that their assignments actually do rotate between the different variants of the 767 (-200, -300, as well as the 757-200). I understand the 764 is a different rating or something along those lines. How is it at other majors? What about pilots who fly narrowbodies? Are UA 737 pilots type rated to fly any other types at UA?
Thank you for your replies.