Voicing concerns over the Centre’s plan to privatise the four state-run airports that might result in a steep hike in user fees, global airlines body IATA has said that an all-out sale will only benefit operators.

“My suggestion is that the Centre should carry out a rigorous cost-benefit analysis before taking a decision on these four Airports Authority-run airports in Chennai, Kolkata, Ahmedabad and Jaipur,” International Air Transport Association (IATA) Director General and Chief Executive, Tony Tyler, told reporters here.