Wadia Group-owned airline Go First has sought approval to restart flights with 22 planes for the next five months. The Directorate General of Civil Aviation (DGCA) had asked for a resumption plan last week after meeting the Go First management. Differences have emerged between the Tata Group and the founders of CaratLane over the valuation of the residual stake held by the founders, leading to a months-long deadlock, said people aware of the matter. India’s largest omni-channel jewellery brand is majority owned by Tata Group company Titan.