OCI RULES
I am Indian born but a foreign passport and foriegn licence , OCI holder. I flew in India from 2007 to 2014 and I was on a FATA the whole time , in due time we started doing the Indian medicals (2010) . Things to consider are : MUST have command time for a FATA ( 750 hours PIC on type ie B737/ A320 ) : no FO ON FATA, airline must prove they need foreign captains. I was at Jet and was given a contract till the end of 2016, but seeing the scene in India these days with plenty of capt from spice moving to jet , I got out with a pretty decent job back at home country . I seriously doubt that there is any need for captains anymore. Hope this helps. And of course the other option is that you get an Indian Lic.