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Suppose that you are offered that choice next time buying air ticket.
Would you prefer to have parachute instead of buoyancy vest - just in case ?
I guess both weight and cost the same ( parachute and vest). Small (
)modification to air plane should be possible for fast in flight evacuation.
Maybe in next Dream-liner ?
Boenig or Airbus will be first ? 
For sure I am tempted to use cheap Air China planes when availabe - and then my parachute concept will be quite handy.
I bet that Air Force One has few parachutes on hand.
I do watch Air Crash Investigations and I could not recall a single crash that vest had any use at all.
Even Hudson river landing ...
For parachute completely diffrent perspective ..
under one condition of course ...
captain will jump last not first 
Is it possible to jump from a plane in trouble and survive? Isn't it too high, and the air too thin and cold?
When a plane just breaks up, you have no hope anyway.
I doubt there are many situations where the plane is in control (to allow people to jump) but otherwise doomed.
Imagine trying to get a few hundred people to jump from a plane, when you are seconds from disaster...
Terminal velocity of jumper flying belly first is 195 km/h
head or feet first around 300Km/h
even if you over the water your are dead for sure on landing..
but suppose there it was our holiday trip to tropical paradise and all our SeaBreeze comunity were on the plane 
everybody jump with his full gear
-teabaggers with inflated kites and boards
-windsurfers with sail rigged on and small wave board
- SUP -sorry guys with your coffin board
-sailor in full ballast Yachts or hanging to the moths
and jetskiers blasting full power too
Who may have the best chance to survive the landing on the water ?
I think if you leave a plane at super high altitude you'd pass out in the thin air, but perhaps awake again as you get lower to the ground?
People have survived drops out of planes no parachute etc.
I recon the SUPers would have the best chance. The area of their boards would make their terminal velocity slower than the other crafts.
That is unless it is a really high fall and the kiter has time to inflate the kite, lay out the lines and launch the kite in free fall...
cost is nowhere near similar, lots of crucial bits to a parachute, harness + rigging + chute + pack + deployment system (ripcord/spring/static line).
Bouyancy vest is just a bladder in a pvc jacket with a 5c plastic whistle.
Plus
no oxygen
too cold
no easy way to exit safely
no easy way to trigger chute reliably for a jumbo full of people(static line but tangles etc)
Need the bouyancy vest if over sea anyway
wet parachute will drown what the sharks don't get
etc
Planes sometime fly for hours with obvious fault unable landing safely, well below their ceiling height of 10km
but even at max hight it should take about 40 seconds in free drop to reach 7 km where is enough oxygen to breathe
so im not going to suffocate after 40 seconds, or snap freeze. bring it on i say! got my throw away at the ready. besides, the oxy masks will drop. yeeehaaaa!
Air force pilots do somehow, with a couple of notable cases from well above 40,000', and survive.
I would choose the PFD, after sitting through many sessions of "now in an emergency blow on this tube to inflate"..( they even have dancing on some aircraft whilst they prepare you )
I could only imagine the speech for a chute. 
Beside jumping out at 300kts and being slammed into the horizontal stab would not be far as nice as grabbing the boobs of the closest hottest chick and singing combyah..
You would have to fight the crew and passengers to get the door open to jump, not possible IMHO.
How about a helmet and flame proof suit? More likely to crash on land during takeoff and landing. And sit in the back of the airplane.
Arent the cabin doors effectively plugs that seal with greater force as the differential between cabin pressure and outside pressure increases. So you can't get the door oPen anyway. If you make the doors easier to open some drunk nutter that's wants to get off at 32,000 feet is going to kill everyone on the Plane anyway.
totally pointless ......if you exited a plane at 900 km/h (cruising speed)at 37000 how many pieces would you split into ...... akin to hitting a brick wall
there was a rash of hijackings in the 70's inspired by D B Cooper where they exited jets but they were travelling slowly
en.wikipedia.org/wiki/D._B._Cooper
the fastest human was this guy in 1960 ......deadset legend
en.wikipedia.org/wiki/Joseph_Kittinger
)modification to air plane should be possible for fast in flight evacuation.
)modification to air plane should be possible for fast in flight evacuation.
You have to be jokin. You really think a parachute and harness is comparable in size and weight to the excuse for a life vest under your seat, Ha!
Ooh! and when it all turnes to crap the pilot is going to slow the aircraft to stall speed while we all stand in the isle strapping on our parachutes, cause we are all going to jump out of an aircraft that is totally under control????
Ooh!! ooh!! and we all wear flight suits and helmets so it is actually possible to jump out at mach 1.5 anyway!!!
WTF!
I can't believe you've all overlooked the obvious solution.
Wingsuits!
They're compact, no long lies to get tangled.
I'm sure the airlines could find a cheap manufacturer in China to supply.
Make them standard cabin wear and should the plane be in trouble, jumping out at 900km/h you'd just glide the rest of the way to your destination.
