Board Thread:Suggestions/@comment-27343425-20160707114625/@comment-25994324-20160713154341

30 meters (or 100 feet) above the ground is the highest up you can be to deploy a parachute before hitting the ground. This is also provided that you deploy the parachute just right so it will catch the air and do it's function. If you do not do it just right, it can take up to a few seconds which is very deadly.

That being said, this is a video game, and Roblox has never been known to follow the laws of physics. And Just Cause gets away with parachutes that defy physics.