New Delhi, May 6 -- Delhi's Indira Gandhi International (IGI) Airport will resume operations with all four runways from Tuesday, airport officials said, adding that the non-operational runway will be functional before noon. "Runway 28/10 was cleared for operations by DGCA on Monday. Flights will land as per schedule before noon," an airport official, asking not to be identified, said. On Sunday, HT had reported that negligible progress on the runway's upgrade was holding up flights and causing flight disruption, which prompted Union civil aviation minister Ram Mohan Naidu to pause the work. The runway was shut on April 8 for an Instrument Landing System (ILS) upgrade to CAT III B standards, enabling operations in dense fog. The lighting system was also being extended from 650m to 900m. By April 11, major delays emerged due to poor planning and unfavourable easterly winds. With all four runways operational, IGI can handle up to 90 flights an hour. Under westerly winds, capacity drops to 74....