Snow is good-soft, deep, drifted snow. Snow is lovely. Remember that you are the pilot and your body is the aircraft. By tilting forward and putting your hands at your side, you can modify your pitch and make progress not just vertically but horizontally as well. As you go down 15,000 feet, you can also go sideways two-thirds of that distance-that's two miles! Choose your landing zone. You be the boss.
What to do if the plane you are travelling in suffers what the engineers coyly call "catastrophic integrity failure." Meaning that you've suddenly got bigger problems than the yakker in the next seat.
If you keep your wits about you, though, and employ these elementary principles of physics . . . well, you'll probably end up like a smashed bug anyway.
Yet people have survived falls from a similar or even greater height before. Here's how they did it.