In a major setback to India's efforts to market its indigenous helicopters in the overseas market, a Dhruv helicopter sold to the Ecuadorean Air Force on Wednesday (October 28) crashed in Quito during a military parade, leaving two of the pilots injured. The air mishap also forced the Ecuadorean Air Force to ground the six other 'Dhruv' Advanced Light Helicopters (ALHs) in its fleet till the probe it ordered into the mishap was completed. The helicopter had hit the ground after veering off course while flying in formation with two other helicopters over an air force base near Quito.