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ph8068

Big-ways from PAC XL750

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I need to work out how to launch big-ways from this aircraft. Has anyone got any information which may be of use. I specifically need to know:

1. Size of the door (relative to other more mainstream aircraft).

2. How many floaters are feasible.

3. Are the divers likely to be in single file or side by side?

4. Any other useful info.

Thanks,

Paul.

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There's more to launching big-ways than simply hanging as many people you can physically put on the outside of the aircraft. In other words, just because you could possibly hang nine floaters and a camera flyer in the door of a twin otter, it might not be that great of an idea.

I would suggest at least talking with a pilot of one of these (and that's going to be pretty rare at this point) to find out what the weight and balance issues are going to be in loading up the tail. Be -certain- to include your camera flyer in the body count.
quade -
The World's Most Boring Skydiver

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I wonder how the stall recovery is on the PAC.;)

That horizontal stabilizer looks pretty close and low, too. That always makes me worry about a floater having a premature deployment, or an over agressive exit by a solo leading to a tail strike. Looking forward to seeing one of those planes in person, and hopefully jumping out of it too.

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That horizontal stabilizer looks pretty close and low, too.



Yeah, I had hoped to see a high tail when I first read it was the first plane to roll out of the factory ready for skydiving. Turns out they mean it's the first plane to have a skydiving package factory installed and FAA approved - it's still a converted Ag plane.

-=-=-=-=-
Pull.

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Used to do a lot of RW jumps from the Cresco (the agricultural version).....in NZ in the 1980's....since then its mostly been used as a tandem hauler...........

Some very clear rules....we would not hang more than 4 floaters out......a risk of stalling the elevator.....you get a warning shudder, then an instant stall.....pucker factor quite high......doesn't react well to sudden big C of G changes aft............

Also if you are out after the base /pin, beware the "Cresco Kiss", as the tail leaps up as everyone suddenly lets go, and the door sill takes the bark off your shins........makes the eyes water......

Great jumpship, but take it easy with your stacking till you get used to it......don't leave your floaters hanging outside for more than 10 seconds....fast stack then go...........

You'll love it once you get used to it.............

If you can find and contact a Kiwi pilot called Bernie Haskell.....he's the man.....lots of experience with RW flying the Cresco......not sure where you'd find him these days....lived in Taupo up till late 90's.....then moved....don't know where to, but NZ is a small place............shouldn't be too hard to find him..........
My computer beat me at chess, It was no match for me at kickboxing....

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Actually...to be fair to the 750....the Cresco had no handles or step, the door was smaller and a bit further aft....and it stank badly of fish one time.....(Bernie had been spraying a fish based liquid fertilizer.........).....

So the 750 probably has fewer vices than the Cresco, probably a beefier powerplant as well..........but the Cresco was a rocketship........
My computer beat me at chess, It was no match for me at kickboxing....

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Any tail can be a hazard as an Otter about two weeks ago had a tail strike (on the horizontal stab) No injuries fortunately. Just a very large dent>:(

Talking about CG if anyone ever has the chance to see the video of the GoldenKnights Fokker in an inverted spin, take a look. Basically they got WAY to many people aft of CG. It nuts watching the people fly out of the plane trying to save their life. Fortunately, the plane was recovered and no one was killed.
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- Does this small canopy make my balls look big? - J. Hayes -

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How about placing a "relay guy" in the plane and starting to put one floater after another out after pilot agrees? Like pilot says:"ok, put floater number three out!", relay gives #3 a go, and if the pilot gets a stall warning, immediate exit? Might take a few fun jumps to figure out, but what the heck?
Would be an idea for a new pilot and to find out how many floaters can be put out? The plane obviously would have to be a full load on jump run.
Would be safer than just throwing 5 people on the rail right away, wouldn't it? Just thinking..
Something still bugs me about that...
The mind is like a parachute - it only works once it's open.
From the edge you just see more.
... Not every Swooper hooks & not every Hooker swoops ...

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How about placing a "relay guy" in the plane and starting to put one floater after another out after pilot agrees? Like pilot says:"ok, put floater number three out!", relay gives #3 a go, and if the pilot gets a stall warning, immediate exit? Might take a few fun jumps to figure out, but what the heck?
Would be an idea for a new pilot and to find out how many floaters can be put out? The plane obviously would have to be a full load on jump run.
Would be safer than just throwing 5 people on the rail right away, wouldn't it? Just thinking..
Something still bugs me about that...



How about (first) looking at the weight and balance info from the mfgr and computing a ballpark based on fuel conditions and jumper weights and locations? That won't tell you how badly the incipient stall/spin will be or what it will feel like, but it would give you some insight into where the CG is going to be vs. the specifications, and the pilot and jumpers can all use that data.

If I were an insurance company, DZO, pilot, or "relay guy" I would probably think the groundwork is a good plan...

-=-=-=-=-
Pull.

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How about (first) looking at the weight and balance info from the mfgr and computing a ballpark based on fuel conditions and jumper weights and locations?

:)
The mind is like a parachute - it only works once it's open.
From the edge you just see more.
... Not every Swooper hooks & not every Hooker swoops ...

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[***
Yeah, I had hoped to see a high tail when I first read it was the first plane to roll out of the factory ready for skydiving. Turns out they mean it's the first plane to have a skydiving package factory installed and FAA approved - it's still a converted Ag plane.

The Cessna Caravan, C-208, also was designed for, and came from the factory certified for, flight with the door off for skydiving operations. I've been told the manual has a section on using the plane for jump operations. I know one Caravan that had a tail strike due to a premature opening on a floater. Jumper survived with some injuries, leading edge had a hell of a dent. Check your gear, watch your handles when you're moving around. :o

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Have done a few from the XL - 16ways are not really a goer since you really need to have some of the weight up forward.

Door is basically the same as a Caravan.
5 Floaters - Can get interesting at normal jump run speeds and you need to be quick about the builds.

I am not a pilot (note the technical terms;)) but I have been in it a few times when it has stalled - Stall is very mushy and tends to roll around a bit. All those people at the back tend to block the wind to the tail = not good.

Its good fun and relatively fast. When you get those chunks leaving you will tend to hit the roof but at least it means you get to have a longer dive going out last.
"Don't blame malice for what stupidity can explain."

"In our sleep, pain that cannot forget falls drop by drop upon the heart and in our despair, against our will comes wisdom" - Aeschylus

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The Cessna Caravan, C-208, also was designed for, and came from the factory certified for, flight with the door off for skydiving operations. I've been told the manual has a section on using the plane for jump operations.



Sweet. My favorite plane just became favoriter!

-=-=-=-=-
Pull.

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but I have been in it a few times when it has stalled - Stall is very mushy and tends to roll around a bit. All those people at the back tend to block the wind to the tail = not good.

Its good fun and relatively fast. When you get those chunks leaving you will tend to hit the roof but at least it means you get to have a longer dive going out last.



Interesting. Thanks for the report.

Anything else that you've noticed with this aircraft, safety-wise?

ltdiver

Don't tell me the sky's the limit when there are footprints on the moon

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The one we have here has a recessed step, this means that with any outward facing exits it can be a real bastard (read impossible) to do some of those exits. You still can exit from inside wel enough as the door is fairly large.

For 8's and bigger (especially if people are taking there sweet time) it really helps the pilot to load up the nose as much as possible.

For the camera flyers - have not had much experience but the step and handles (its the big long rail that is just right) are fantastic. Might want to watch popping those wings as I saw a w/s jumper almost hit the wing when he inflated the wings prematurely.

The plane climbs quicker than the cresco (cleaner body) with the same load.
"Don't blame malice for what stupidity can explain."

"In our sleep, pain that cannot forget falls drop by drop upon the heart and in our despair, against our will comes wisdom" - Aeschylus

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For the camera flyers - have not had much experience but the step and handles (its the big long rail that is just right) are fantastic. Might want to watch popping those wings as I saw a w/s jumper almost hit the wing when he inflated the wings prematurely.



Dang! Thanks for the info. Guess exits like "O", "M", and "13" are out for a 4-way team! These inherently come out flat and a cameraflyer (who leads the exit) has to pop UP and BACK to show the formation correctly. This would definitely come in close proximity to the tail.

ltdiver

Don't tell me the sky's the limit when there are footprints on the moon

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Dang! Thanks for the info. Guess exits like "O", "M", and "13" are out for a 4-way team! These inherently come out flat and a cameraflyer (who leads the exit) has to pop UP and BACK to show the formation correctly. This would definitely come in close proximity to the tail.



I doubt it. Teams have been doing exits like those from Caravans and Beach 99's for ages. No problem for a cameraflyer familiar with the A/C.
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You're not as good as you think you are. Seriously.

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I -think- she was referring to the way the 4-way teams normally train for a Twin Otter exit. Obviously the camera flyer could/should/would adapt by probably doing a bit of a peel or maybe 3 O'Clock type of exit.
quade -
The World's Most Boring Skydiver

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And there you have it. It doesn't make a lot of sense to me for either teams or video to get pigeon-holed into thinking there is only one way to do something. It was not too long ago at all that we all used to have to switch from left to right door exits on a pretty regular basis at meets depending on what the DZ had on its flightline. Back then it was QueenAirs and Twin Bonanzas. While these days it's a pretty good bet your league is jumping an otter, all bets are off when it comes to international competition.

Chuck

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Dang! Thanks for the info. Guess exits like "O", "M", and "13" are out for a 4-way team! These inherently come out flat and a cameraflyer (who leads the exit) has to pop UP and BACK to show the formation correctly. This would definitely come in close proximity to the tail.



I doubt it. Teams have been doing exits like those from Caravans and Beach 99's for ages. No problem for a cameraflyer familiar with the A/C.



Yep. That's why I put in parenthesis "lead the exit", so you would understand what I was saying.

Now, having a bit more understanding from a first person point of view on the airplane in question, it makes it a bit more unattractive for those DZ's who are looking for a plane that is versatile enough to handle big-ways and competition training on a regular and safe basis.

Why get the PAC XL750 (or a KingAir,or a Caravan, or a Beech) when you can get an Otter? (if you have the money to spend, that is).

Heck, they used to do competition 4-way out of a C-182! I'm sure glad they upgraded these days! (makes for great video to see just how they had to do it, though).

ltdiver

Don't tell me the sky's the limit when there are footprints on the moon

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Why get the PAC XL750 (or a KingAir,or a Caravan, or a Beech) when you can get an Otter? (if you have the money to spend, that is).


cause the plane is brand new and has a single turbine. Otters are not manufactured anymore.
scissors beat paper, paper beat rock, rock beat wingsuit - KarlM

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And there you have it. It doesn't make a lot of sense to me for either teams or video to get pigeon-holed into thinking there is only one way to do something. It was not too long ago at all that we all used to have to switch from left to right door exits on a pretty regular basis at meets depending on what the DZ had on its flightline. Back then it was QueenAirs and Twin Bonanzas. While these days it's a pretty good bet your league is jumping an otter, all bets are off when it comes to international competition.

Chuck



Chuck,

Sorry that you didn't have the time to go back and pick up where other threads left off in this discussion. I was referring back to those people, in those threads, who vehemently denied that there would be NO problem with the PAC XL750's horizontal stabilizer if a cameraflyer exited in the exact same manner as an Otter exit.

There were those of us who looked at the web site promoting this plane and queried on the tail's location and saftey for the cameraflyer's position. We were waiting to hear a first-hand report from those who actually DO jump from this plane. We got it yesterday.

Seems that those of us with a concern were correct. Yes, you CAN exit the PAC like a Caravan or Beech. We never said you couldn't. We were trying to understand why there were those who claimed you -could- like an Otter. Up and Back. Seems that they were wrong.

That is the message of my post above. Sorry you misunderstood.

ltdiver

Don't tell me the sky's the limit when there are footprints on the moon

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