If like me you haven't unlocked Airdrop but have acquired double jump perk (Leap of Faith),this is best done at the Flame of Eden as it has a near vertical cliff.Check out my video below
Screenshot of map location
http://www.imagebam.com/image/0f6b381131075234Simply run and jump with a single jump from the cliff edge,then time the second jump as close to the ground as possible.
Good thing about this location,if you fail you can die and you'll respawn back up on top for another attempt ;)