The additional land could be used either for real estate development or for setting up a maintenance, repair and overhaul facility.The airport is spread over 450 acres. Its runway is 2,230 metres long and currently being used mostly by chartered aircraft. Of late, Kingfisher and Indian have been using this airport as a stopover for their Hyderabad-Visakhapatnam services.The buzz in the industry is that G R Gopinath, who pioneered low-cost flying in India [ Images ] with Air Deccan, has tied up with a Mumbai-based public figure to put in a bid. Gopinath, however, has denied reports.