J-1 Visa
Faacfi is correct in saying that the J-1 visa is only good for 2 years. In fact, this visa may not be extended like an M-1 or F-1 student visa even for very legitimate reasons.
However, he is incorrect in asserting that the J-1 only allows 6 months of work experience in the aviation field. The J-1 was intended to cover the period of training required AND allow for work experience during the rest of the visa time. So, if it takes 9 to 12 months to complete the training from zero time or PPL to a flight instructor certificate, then the rest of the time, 12 to 15 months in this case, can be used build time and get paid as a flight instructor.
Faacfi also gives good advice to check with the US Embassy if you are unsure about the limitations and requirements of the visa you are seeking.
Patrick Murphy
Director of Training
Comair Aviation Academy