IMPA Tu-Sa

The IMPA Tu-Sa, (IMPA - Industria Metalurgica e Plastica SA,),was a civil trainer developed in Argentina in the 1940s for aeroclub use. It was a conventional, low-wing monoplane with wide-track fixed failwheel undercarriage. In service, the aircraft demonstrated a number of serious and fundamental design flaws that led to a series of accidents and pilots joking that Tu-Sa stood for Todo Un Sarcófago Aéreo ("Altogether an aerial coffin"). When it became apparent that the defects could not be corrected without a complete redesign of the aircraft, they were withdrawn from use.

References

• Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. pp. 534. 
• Gunston, Bill (1993). World Encyclopedia of Aircraft Manufacturers. Annapolis: Naval Institute Press. pp. 156. 
• Green, William (17 February 1949). "Argentina's Industry". Flight: 198. http://www.flightglobal.com/pdfarchive/view/1949/1949%20-%200304.html. Retrieved 2008-05-08.