 One HAL official stated that the Indian Army is estimated to require up to 400 helicopters within the MLH's class.During February 2017, a full-scale mock up of the MRH was publicly displayed at Aero India 2017; according to a HAL spokesman, the mock up was largely based upon the existing Russian Mil Mi-17.By this point, HAL anticipated the first flight of the helicopter to occur during 2019; however, the engine to power the MRH is yet to be finalised.