Aviation GMR to sell 49% stake in airport business to France's Groupe ADP Updated : February 21, 2020 07:42 AM IST GMR has signed a share purchase agreement with Groupe ADP. GMR manages airports at Delhi and Hyderabad. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.