Pan Am Clipper Endeavour wreck found after 74 years — crash created pre-flight safety briefings

The wreck of the Pan American Clipper Endeavour has been found 74 years after it went down, killing all 52 people on board. The disaster directly led to the introduction of mandatory pre-flight safety briefings, a standard now universal in commercial aviation. The discovery ends decades of searching and highlights the crash's lasting impact on aviation safety regulations.