SPECIAL INVESTIGATION REPORT - WING FAILURE OF BOEING 747-131 NEAR MADRID, SPAIN, MAY 9, 1976
On May 9, 1976, an Imperial Iranian Air Force Boeing 747-131 crashed as it approached Madrid, Spain. Witnesses observed lightning strike the aircraft followed by fire, explosion, and separation of the left wing. The report includes fire pattern studies, structural failure descriptions, trajectory analysis, fuel flammability calculations, gust loading analysis, and an analytical treatment of several hypotheses.
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National Transportation Safety BoardBureau of Technology, 800 Independence Avenue, SW
Washington, DC United States 20594
- Publication Date: 1978-10-6
- Pagination: 42 p.
- TRT Terms: Aerodynamic force; Air transportation crashes; Aircraft; Civil aircraft; Crash causes; Crash investigation; Dynamic loads; Failure; Fires; Gusts; Lightning; Passenger aircraft; Thunderstorms; Wings (Aircraft)
- Identifier Terms: Boeing 747 aircraft
- Uncontrolled Terms: Gust loads
- Geographic Terms: Spain
- Old TRIS Terms: Aircraft fires
- Subject Areas: Aviation; Safety and Human Factors; Vehicles and Equipment;
- Accession Number: 00190732
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NTSB/AAR-78/12
- Files: TRIS
- Created Date: Mar 28 1979 12:00AM