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Forced landing on water or on trees ?

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Old 4th Dec 2007, 09:07
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Forced landing on water or on trees ?

If you had only 2 options, do a forced landing on water or on trees ? What is the best kind to survive ?
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Old 4th Dec 2007, 09:11
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I would go for water as close to the coast/land as possible.
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Old 4th Dec 2007, 09:20
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I'd go for water as I reckon It would give me more chance.

Some years ago a friend of mine ditched his Wassmer (wooden low wing French ) plane half-way between Alderney and the Needles, he had 16 minutes of gliding before he hit the deck and was lucky that it was a flatish day and the chopper was launched before he even ditched. (It had just come out of an annual and the engineer had forgotten to replace an oil seal apparently.)

( He then found out that his secretary had forgotten to send off his insurance cheque but thats another story and he was grateful to be alive ...)

LF
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Old 4th Dec 2007, 09:22
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Me too.

Although woods could be survivable too, particularly if the trees are small. If faced with woods consisting of multi-100 year old oak, if possible, aim between two trunks, let the trunks rip the wings off and thereby dissipate a lot of energy.
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Old 4th Dec 2007, 09:32
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If faced with woods consisting of multi-100 year old oak, if possible, aim between two trunks, let the trunks rip the wings off and thereby dissipate a lot of energy.
Good grief, I hope I can think that clearly - I think I'd be a gibbering wreck if it actually happened.
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Old 4th Dec 2007, 10:36
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Why would you want to do that ......
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Old 4th Dec 2007, 10:50
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Originally Posted by ab33t
Why would you want to do that ......
Yeah why would you want to be a gibbering wreck
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Old 4th Dec 2007, 10:53
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Yeah why would you want to be a gibbering wreck?
Because it saves you from having to make tough choices, and flying the plane as far into the crash as possible?
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Old 4th Dec 2007, 11:33
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The comedian Michale Bentines son tried it in the New Forest in a Piper Cub, it took two weeks to find the aircraft and the bodies.

As a point of interest that is were the rule on booking out originated from.

Always chose the softest, cheapest option!
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Old 4th Dec 2007, 11:36
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Wasn't there an old RAF saying that went something along the lines of "If a prang is inevitable, endeavour to strike the softest object within range as slowly as possible"?

On that basis I would go for the water. Especially as since you have a choice between water & trees - which must mean you're able to land near, or if it's a suitable beach, on the edge of the water.
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Old 4th Dec 2007, 13:11
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Varig 254

Take the example of Varig 254.

It was a 737-200. They got lost over jungle and discovered that they no longer had fuel to reach an airport.

They then kept flying till the fuel ran out, in order to burn off their fuel and prevent postcrash fire, they deployed their flaps (partly, because the failing hydraulic prevented full extension) and they came down in treetops at night.

Out of 54 souls on board, 6 crew and 48 passengers, 13 died and 41 lived. It took a couple of days before some of the survivors could walk through the jungle to a farm and call for help.
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Old 4th Dec 2007, 13:40
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The pilots of Varig 254 must have had balls the size of planets to bring it down over a jungle in the dark!

I would have turned towards a coast no matter how far away it might have been.
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Old 4th Dec 2007, 14:00
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Equipped to Survive

Good article on the subject.
http://www.equipped.com/watertrees.htm
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Old 4th Dec 2007, 14:06
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Depends where you are in the world...

If its tightly packed coniforous woodland I was always taught to stall the aircraft onto the canopy of the trees.....

If your flying over the Florida swamps you DO NOT want to land in the water....there be crocs!
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Old 4th Dec 2007, 15:42
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It sounds a matter of picking the lesser of two evils -

Ditching may seem to be the softest option, but with a fixed undercart the chances of cartwheeling upon contact with water are very high - if your aircraft stalls out at around 65kts you're introducing three high drag points of contact to the water at about the same speed you cruise along a motorway (if ditching in calm wind), it would be a miracle to still be upright once you've lost all inertia.

Forced landings on to woodland doesn't sound too peachy either though, the chances of loosing one, or both, wings and turning the fuselage in to a falling brick appears to be quite high.

Pop along to Woodvale if you're ever able and have a look at the EFATO forced landing options - it certainly opens the eyes to being caught between a rock and a hard place should the worse occur at low speed and altitude.
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Old 4th Dec 2007, 15:58
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Ditching may seem to be the softest option, but with a fixed undercart the chances of cartwheeling upon contact with water are very high
DSAA, where did you get that data? Because the data I have seen seem to indicate that cartwheeling or flipping over when ditching is very rare. In fact, ditching seems to be very survivable:

http://www.equippedtosurvive.com/ditchingmyths.htm

As for wood vs. water, here's what they have to say:

http://www.equippedtosurvive.com/watertrees.htm

Lots more articles on that site, and it seems to be based on solid reasoning, backed up by statistics from the NTSB database.
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Old 4th Dec 2007, 16:22
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if u r going to ditch and have undercarrige why not invert in the air so when u land and flip you will be right side up
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Old 4th Dec 2007, 16:34
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if u r going to ditch and have undercarrige why not invert in the air so when u land and flip you will be right side up
Because flying inverted is HARD and most pilots have never done it?
Because you lose a lot of height in becoming inverted, unless you have an aerobatics capable aircraft with a decent roll rate?
Because in most aircraft the stall speed and the drag is significantly higher when flying inverted?
Because instead of the gear, it is now the windscreen that has to take the initial impact?
Because the chances of flipping over are less than 50%, meaning that if you impact inverted, you will most likely stay inverted, making egress harder?
Because all the gear (and dirt) that's loose in the aircraft will not be held in place by seatbacks etc, but will slide forward freely on the roof?

Need I go on?
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Old 4th Dec 2007, 16:44
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The comedian Michale Bentines son tried it in the New Forest in a Piper Cub, it took two weeks to find the aircraft and the bodies.
Crashed near Peterfield after failing to book out, body was found months later after leaves fell from trees. He had survived the crash and was only yards from a footpath.
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Old 4th Dec 2007, 16:59
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Originally Posted by jammydonut
The comedian Michale Bentines son tried it in the New Forest in a Piper Cub, it took two weeks to find the aircraft and the bodies.
Crashed near Peterfield after failing to book out, body was found months later after leaves fell from trees. He had survived the crash and was only yards from a footpath.
And resulted in a silly system where you bookout but still need a responsible person to notice you haven't arrived and have a parallel flight plan system that doesn't do anything if you don't close your flight plan, so is not very useful for achieving the SAR goal.

Everywhere else in the world seems to work fine using flightplans as a basis for overdue action. Some places mandate its use (which I personally don't agree with but Such Is..) Some places recommend and allow individuals to make their own risk assessments. It is only the UK that sets up its own 'sort of mandated' special system???
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