Austral Líneas Aéreas Flight 2553
On October 10, 1997, the McDonnell Douglas DC-9-32 that was operating the flight crashed on the lands of Estancia Magallanes, Nuevo Berlín, 32 kilometres (20 mi; 17 nmi) away from Fray Bentos, Uruguay.[4][6]: 8, 11–13 The aircraft, which left from Posadas and was due to land in Aeroparque Jorge Newbery, Buenos Aires,[5] was forced to divert towards Fray Bentos to avoid a storm.Unknown to the pilots, this was caused not directly, by a loss of power, but by ice formed inside the pitot tube, which reads the airspeed for the indicator by measuring the pressure of inflow air.However, the First Officer disregarded the Captain's commands and deployed the wings' slats to maintain their altitude and lower the plane's stall speed.[1] Compounding this problem was the absence of the alarm designed to report such a malfunction (raising serious questions about inspection irregularities by the Argentine Air Force).