Indian carriers are likely to place orders for 1,500 to 1,700 planes in the next one to two years and Air India is expected to make the first move with a potential order for 500 aircraft, aviation consultancy CAPA said on Wednesday. The total commercial Indian fleet of around 700 aircraft is smaller than some of the world's largest individual airlines, CAPA said, adding that given the immense potential that exists, it stands to reason that there is a need to induct more aircraft.