[ChuckMcM]

This is the ultimate reason for not having flying vehicles. You lose one and it's injury and death all the way down.

That said, gyro-copters have excellent fail safe properties (then can autorotate/glide to a landing without power) when controlled by someone, or something, committed to operating them safely.

[starpilot]

The FAA requires that all helicopters be capable of autorotation. We actually design and test for this extensively, by adding mass to the blade tips to store inertia, pilots regularly practicing power-off flight etc.

Autogyros fly in constant autorotation (hence the name), the main rotor being unpowered.