OK Britishguy, you have to be kidding me or you dont have a clue what green card means. If you have one you are a permanent resident!!!!!! So you dont need a visa for anything. You can join the navy if you want to!!!
OK people enough of half- true or wrong information.
You dont need an H visa to work as a CFI you can work on J1 or F1 . There are certain limitations.
If you are going for a longer period of time the J1 visa is the best, you can get it for 24 months and you can work as a CFI and get payed.(you get a social security card that gets you the job)
M1 is the easiest to get but no working. It is isued for the period of time that you need to complet your training.From 6 months to 4 years maybe...
Then is the F1 visa, you can get that one if you go to college and you can also work after the first school year. So after 9 months you can work on campus or in the field related to your studys. So if you are in an aviation major you can work as a CFI. But not the first school year and only part time.What is part time is decided by the INS.
For H1B visa you have to have a sponsor , a 4 year degree or 2 years of working experience.And it is a first step to get the green card.That is a skilled worker visa.
That are the options!
for details aks the INS at local embassy