There have been numerous accidents and near misses of heavy drones falling from the sky following mechanical and other failures.
The idea is therefore to equip them with a parachute that automatically deploys when needed or on demand, bringing them slowly back down to earth, and landing safely instead of in a tangled heap on someone's head.-- xenzag, Jan 15 2016 // landing safely instead of ... on someone's head //
You're no fun any more ... [-]-- 8th of 7, Jan 15 2016 I'm pretty sure some hobbyists have experimented with this.-- notexactly, Jan 15 2016 random, halfbakery