Sat Sep 26, 2020 11:51 am
I was also thinking the P-206 was never available with a float kit. So, I looked at the TC, which shows seaplane information for the P-206. Can't say that I've ever seen one.
I THOUGHT I recalled one of the folks at Wipair trying to get a field approval for an early 206, but now that I think about it, his airplane was actually a 205, which is actually a version of the 210, and not covered by the 206 TC.
In any case, I'd bet that P-206s with float kits are scarce as hen's teeth. And converting one could probably be done, but bring $$$. The biggest single part is the vertical tail, which is entirely different on the seaplane models. So, you'd have to replace the vertical tail. Last I heard, that was well over $20 K plus paint.
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The other issue with the P-206 is that I believe they were all built with the small fuel tanks. So, if you're doing any distance, especially on floats, that can be an issue. I may be wrong on this one....not sure.
As noted above, weight is a huge factor when comparing performance, no doubt. But, it is definitely NOT the only significant factor. Put a U-206 next to a 185, both on the same floats, both with the same engine/prop and load them to the same weight, and the 206 will lag some behind the 185 in takeoff performance. I've never quite understood that, but the wings are a bit different on the two airplanes. The difference isn't huge, but it's there.
The two airplanes will land in about the same distance, though someone who's handy with a 206 might land shorter by raising the flaps just prior to touchdown......if you want to play those games.
Different floats can make a HUGE difference in takeoff performance, but very little in landing performance. That said, sometimes it just takes some practice and experience with the floats to make them perform. Frankly, on floats, the single biggest difference in performance is going to nearly always be the pilot.
Example: I really disliked the big Wipaire 4000 straight floats on a 206 I flew. Lots of floatation, but huge floats, and seemed to be water lovers. Till I discovered the "aquatic slip", that is. With those floats, I could get the plane up on step fairly fast, but the bottoms were so huge, there was a lot of hydrodynamic drag there. The plane would accelerate up to its hull speed, then just stay there. One day I was right there, trying to get the thing to launch when I kind of scruntched around in my seat, which had the effect of pushing on the left rudder, followed by pushing on the right rudder....yawing the plane. As soon as that happened, the thing launched beautifully. I worked on that technique, added a roll and pull component, and after that, I'd get that plane out of the water at 3800 pounds exactly where my previous two 185s got out of the water, at 3350. Totally weird technique, but that's float ops for you. I'd still prefer the Wip 3450 floats mind you, but.....
But, in answer to the question regarding takeoff distances: I regularly worked several small water bodies for 20 years. Much of that time was working them with 185s. Switched to a 206 with an IO-550 and folks told me I'd have to rethink landing those lakes. Not at all, actually. Understand that I never came out of those lakes at gross weight in either type.
So, yes, the 206 will operate pretty short, if you keep it light. When I operated out of those small water bodies, I often shuttled out of them....two trips to a larger water body, reload with a full load and head out. Same goes for fuel.....sometimes you need to stage some fuel. In bear country, that can be a pain if you use plastic jugs. I bought five gallon steel cans of 100 LL to spot out in caches. Just have to be careful handling them while fueling.
As to a comparison of the two aircraft side by side on wheels, I agree with the earlier assessment that the 206 is an ass kicking mobile on wheels. Not only that, it's a huge load carrier, especially compared to the 180.
Fuel burn: Yes, you can run the power down on the 206 to NEAR 180 fuel burn, but the plane's not going to be real happy there on floats.....lots of drag. That said, with an engine monitor and balanced injectors, I ran both the IO-520 and 550 lean of peak, at around 12 to 13 gph. Slows you down, of course, but... The 550 LOVES LOP ops in my experience. Also, remember that the 520 is actually a 285 hp engine, that's approved for takeoff power of 300.
As I said before, it sounds to me as if your mission is strongly favoring the larger airplane. And, the mission is and should be HUGE in determining what plane you're going to use.
Emergency egress: I agree that the U-206 offers limitations on emergency egress. If you're always flying with the same group of people, as it sounds like you are, you can deal with that easier by really emphasizing and practicing egress with your regular passengers.
But, stuff happens. The good news is, this stuff rarely happens with straight float airplanes. It's largely an amphibian thing. But, I know a fellow who got a straight float 180 upside down in the water. He and his wife got out, but he came to our water egress training program we put on in Fairbanks, and went right home and got his wife. She hated it, but she told me he'd informed her after having gone through it that if she didn't go through the training, he wouldn't carry her as a passenger any longer..... That tells you what a fellow who'd done the egress thing for real felt about the training. It can and has saved lives.
As to amphibs, install a set of mirrors on the wings that allow you to visualize the landing gear position, then inspect the gear and THINK about the position of the gear prior to every landing.
One other question: Do you ever operate on skis? That can also be an issue, but I'll tell you, the 206 can also be a fantastic ski plane. Approvals may be scarce, and gross weight is often limited, but....
MTV