Originally Posted by
bakerin
This is interesting, as far as I am aware you need a CPL for an FAA CFI, which requires a class 1 medical (which unfortunately I cannot get), so I don't see how you can fly commercially on a class 2, if it's the CPL license that requires a class 1. Could you elaborate please? I am intrigued. I am aware that you can become a CFI in the UK though, without a CPL (therefore without a class 1).
Nope, none of that is correct. An ATP as PIC requires a class 1, CPL requires a class 2 and Private requires a class 3 (to use the privileges). So you can get both commercial and CFI with just a class 3. Instruction is not considered commercial work by the FAA so you would need a class 3 to teach private pilot students. No medical is required to teach anything above private as the student would be PIC.