MDLR Airlines Private Ltd, a regional carrier that closed down in 2009, plans to restart operations in six months under the brand name Jet Sapphire, according to a report in the Mint. The Gurgaon-based airline has hired Shakti Lumba, who set up the operations of InterGlobe Aviation Private Ltd-run low-cost carrier IndiGo in 2005 and, before that, Air India Ltd’s regional arm Alliance Air, to head the airline.