![](https://flightsafety.org/wp-content/uploads/2021/02/Segnas_Seite1-e1613076598645.jpg)
The pilotsā āhigh-risk flying,ā which took their airplane too low and too slow over the Swiss Alps, led to an Aug. 4, 2018, crash that killed both pilots and 18 others aboard a historic Junkers Ju 52 known as āIron Annie,ā the Swiss Transportation Safety Investigation Board (STSB) says.