New Delhi: An Indian national was killed and three others reportedly sustained injuries after two helicopters collided while attempting to land at the Pheriche helipad near Mount Everest Base Camp. Two helicopters collide in Nepal's Solukhumbu, one person killed and another. An Indian tourist was killed and another passenger of Indian origin injured after two helicopters collided while attempting to land at a helipad in Nepal’s Solukhumbu district on Tuesday morning..