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  • Aviation Safety Experts
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  • AeroSafety World May 2019
  • Outside the Envelope

Helicopter Safety

Outside the Envelope

The AS350 exceeded hydraulic system limits, banked hard and struck a mountain ridge.

by Linda Werfelman | May 14, 2019

Superstition Mountains, Arizona, US, near accident site

Flying over mountains in the southwestern United States, the Airbus Helicopters AS350 B3 dipped as low as 30 ft above ground level with fluctuating groundspeeds as high as 148 kt before abruptly entering a hard right bank and striking the ground.


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Key Safety Issues

  • Controlled Flight Into Terrain (CFIT)
  • Loss of Control–In Flight (LOC-I)
  • Mechanical Issues
  • Runway Safety (approach and landing)
  • Sabotage/Intentional Acts
  • Midair Collisions (MAC)
  • Runway Safety (Conflicts)
  • Wildlife Issues
  • Fatigue
  • Cabin Safety
  • Emerging Safety Issues
    • Lithium Batteries
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    • Unmanned Aircraft Systems

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