Airport staff stand next to parked passenger jets of IndiGo and Jet Airways (front) at an airport in Kolkata, in this file picture taken May 6, 2012. India on September 14, 2012, decided to allow foreign airlines to buy stakes of up to 49 percent in local carriers, a long-awaited policy move that could provide a lifeline to the country's debt-laden airlines by opening up a fresh source of funding.