With the multiplicity of aviation accidents, such as, but not limited to bad weather, engine problems, running out of fuel or even control system problems.
Consequences of these incidents include loss of human lives in addition to the loss of the aircraft. The idea came from here, which are summarized as: Provide a range of parachutes to the aircraft to slow the motion of the aircraft through the atmosphere to reduce the collision force of the aircraft at the Earth's surface.
The number of parachutes and sizes depend on the aircraft size. It should be manually operated next to the automation in anticipation of any malfunction of the control systems.
The cost of this idea is very small compared to the lives of human beings and also the cost of the plane. With this idea we can keep our lives and the aircraft assets as much as possible.