OREANDA-NEWS. April 20, 2011. State-owned Indian Oil Corporation (IOC) recently raised Aviation Turbine Fuel (ATF) prices by 2.10 per cent, taking them to Rs 60,404 per kilolitre in Delhi, as per an IANS report. This is the 13th straight ATF rate hike since October 2010. IOC, Hindustan Petroleum Corporation Ltd and Bharat Petroleum Corporation Ltd revise ATF prices based on the average international prices on the first and 16th of every month. ATF prices were last hiked on April 1, 2011, when state-owned oil marketing companies raised prices by 1.45 per cent, taking the prices to Rs 59,157.32 per kilolitre.