Uruguayan Air Force Flight 571 was the chartered flight of a Fairchild FH-227D from Montevideo, Uruguay, to Santiago, Chile, that crashed in the Andes mountains on 13 October 1972. The accident and subsequent survival became known as the Andes flight disaster (Tragedia de los Andes, literally Tragedy of the Andes) and the Miracle of the Andes (Milagro de los Andes). The inexperienced co-pilot, Lieutenant-Colonel Dante Héctor Lagurara, was piloting the aircraft at the time of the accident. He mistakenly believed the aircraft had overflown Curicó, the turning point to fly north, and began descending towards what he thought was Pudahuel Airport in Santiago de Chile. He failed to notice that instrument readings indicated he was still 60–69 km (37–43 mi) east of Curicó. Lagurara, upon regaining visual flight conditions, saw the mountain and unsuccessfully tried to gain altitude. The aircraft struck a mountain ridge, shearing off both wings and the tail cone. The remaining portion of the fuselage slid down a glacier at an estimated 350 km/h (220 mph), descending 725 metres (2,379 ft) before ramming into an ice and snow mound.