Event Details

Title:Wing Failure Of Boeing 747-131, near Madrid, Spain, May 9, 1976
Micro summary:This Boeing 747-131 experienced a wing failure while approaching its destination airport in a thunderstorm.
Event Time:1976-05-09 at 1430 GMT
File Name:1976-05-09-US.pdf
Publishing Agency:National Transportation Safety Board (NTSB)
Publishing Country:USA
Report number:NTSB-AAR-78-12
Site of event:Near Madrid
Latitude/Longitude:Not specified
Departure:Mehrabad International Airport, Teheran, Iran
Airplane Type(s):Boeing 747-131
Flight Phase:Approach
Registration(s):Serial No. 5-283
Operator(s):Imperial Iranian Air Force
Type of flight:Revenue
Serious Injuries:0
Other Injuries:0
Executive Summary: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.
Learning Keywords:Operations - Lightning
Consequence - Damage - Airframe or fuselage
Consequence - Hull Loss


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