Seawind 3000 Safety issues

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Samibrahim

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Dec 11, 2020
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not much experience, still working on my private pilot license, completed about 45 hours. I guess I am going to pass the deal and stay with my Zodiac 650.

Thanks all for all the feedbacks.
 
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Samibrahim

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Dec 11, 2020
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Edwisch,

I learned from the thread that the problems are mostly related to rudder and elevators. I thought that this can be solved by increasing the area of both of those as drawn in the attachment. I never seen that done before, but I think it is doable.
 

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Vigilant1

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Aside from all the (very significant) observations about the safety and adequacy of the Seawind 3000 design itself, there's also the huge issue of the commercial status of Seawind LLC. Namely, they appear to be kaput.

https://m.facebook.com/SeawindLLC/

It would be one thing to buy, say, plans for a simple, well validated design and commit to scratch building it even if the designer is no longer around to offer support. It is a whole 'nother thing to buy a kit of an orphaned large complex composite design that has known 'issues' and a very small population of flying examples.

I wouldn't waste my time by thinking about it for one more second, and I wouldn't feel an obligation to be especially welcoming to whoever was trying to sell this thing to me. Just my opinion.
 
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Tiger Tim

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The most significant problem is the configuration.
Looks to me like the cabin, wing, horizontal tail, and engine are all comparable to where they are on a Lake. The biggest difference is the enormous fin and rudder and what looks to be an awfully short hull aft of the step. I’m not saying the Seawind is a good airplane but I kind of suspect this is one of those cases where the devil is in the details.

Maybe a bucket of cash thrown at a guy like Roncz could sort it all out but I’m not the one to throw that bucket.
 

Kyle Boatright

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Looks to me like the cabin, wing, horizontal tail, and engine are all comparable to where they are on a Lake. The biggest difference is the enormous fin and rudder and what looks to be an awfully short hull aft of the step. I’m not saying the Seawind is a good airplane but I kind of suspect this is one of those cases where the devil is in the details.

Maybe a bucket of cash thrown at a guy like Roncz could sort it all out but I’m not the one to throw that bucket.
I think you're looking at a short fuselage with all of the weight very near the CG. That leads to a a low moment of inertia in roll and pitch, which leads to stability issues in flight and on the water, exemplified by porpoising issues.
 

TFF

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Anything is fixable. Is it t worth it? A free kit would still put you at $100k to finish, at least. A IO540 and a constant speed prop is going to sink $50-70k easy for used. No support means any issues are yours to figure out. Not insurable which means training in it will be very hard to find just for a qualified pilot. Composite kits consume a lot more time to put together than expected. The big parts are there, but non of the real time consuming stuff is done. Whacking off the tail is a big move to make. It will definitely junk the kit if you never finish it. No resale if you did it and it wasn’t flying.
 

Victor Bravo

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Remove the engine from the vertical fin, put a new leading edge on the fin to make it smooth.

Install two small jet engines on pylons above the trailing edges of the main wing, like the Honda Jet.

The splash water off of the hull can probably be blocked by the bottom of the wing.

This would possibly yield a usable configuration, at the cost of two very expensive engines.
 

fastdancin

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There's nothing more frustrating than trying to adapt something to your needs when the material isn't there to begin with.
 

Sticky111

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Interesting Posts..... I have been flying the seawind for 11 years. Although there have been accidents; mostly due to pilot error; the plane is safe to fly.
Those looking to fly the seawind need to have complex experience as well as the training to fly the plane. If you are a newbeeee to flying, FORGET IT..!!

Abrupt changes due to engine failure...hog wash..! Its a different plane to fly..no doubt

One of the best site pictures in a plane i have ever seen...

Keep up with the plane and it will treat you well
 

BJC

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Abrupt changes due to engine failure...hog wash..!
Please quantify your “hog wash” comment. When trimmed for level flight at cruise power settings, how much does the hands off trim speed change when going to idle power?

Thank you.


BJC
 

edwisch

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I lost two very experienced, very skilled friends in this plane which is "safe to fly." I think your statement is dysfunctional.
 

Sticky111

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I lost two very experienced, very skilled friends in this plane which is "safe to fly." I think your statement is dysfunctional.
Great to be an arm chair quarterback......love your posts

Who or which planes and people r u talking about? I have known all those whom were lost.
I would like to know because I know the facts behind most if not all of the planes that went down...
 

Sticky111

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Please quantify your “hog wash” comment. When trimmed for level flight at cruise power settings, how much does the hands off trim speed change when going to idle power?

Thank you.


BJC

Abrupt ( not the word i would use)....not at all. Let me know when you r ready to go up.
 

BJC

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Please quantify your “hog wash” comment. When trimmed for level flight at cruise power settings, how much does the hands off trim speed change when going to idle power?

Thank you.


BJC
Abrupt ( not the word i would use)....not at all. Let me know when you r ready to go up.
Not interested in “going up”.

I am interested in the answer to my question, though. Do you know the answer?


BJC
 

TETJ

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Jun 29, 2021
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I have and fly a Seawind currently. IT IS NOT FOR A LOW TIME PILOT. You have to know the airplane and the quirks that go with the design. Many of the crashes I have seen, as noted before dealt with engine problems. But if you don't understand this airplane completely it will take you for a ride, especially without full power. If anybody has any questions I would be happy to talk with them.
 

TETJ

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Jun 29, 2021
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Interesting Posts..... I have been flying the seawind for 11 years. Although there have been accidents; mostly due to pilot error; the plane is safe to fly.
Those looking to fly the seawind need to have complex experience as well as the training to fly the plane. If you are a newbeeee to flying, FORGET IT..!!

Abrupt changes due to engine failure...hog wash..! Its a different plane to fly..no doubt

One of the best site pictures in a plane i have ever seen...

Keep up with the plane and it will treat you well
I have a Seawind as well, where are you based? I am in Delaware.
 

Island_flyer

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Interesting that the LoPresti Spectra (below), which was probably an inspiration for the Seawind, never made it beyond prototype stage. It flew rather successfully it seems. But maybe there were stability challenges (?) or simply a lack of capital to put it into production. Obviously it offered outstanding visibility to the occupants. The original Pöschel Equator also had a prop extending from the vertical fin, but the engine was actually in the fuselage.
I got my original seaplane training in a Lake Amphibian and had no problems operating from land or water, other than a tired arm, as the throttle was on the ceiling of the cockpit. Spectra.jpg
 
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