Hi folks --
I actually did have to put a SuperCub in the water once. And it was not much fun. I was giving instruction so was in the back seat and about 100 ft. over the trees and a small lake, on take off, the engine started to miss real bad and then quit entirely. Things happened pretty fast since we were at such a low altitude -- but of course tried to do a quick fuel/mixture/carb heat check --- but primarily concentrated on simply flying the airplane.
The guy I was giving instruction to was a high time pilot with lots of experience but this was his 3rd take off in an Cub. He kept flying and I kept talking him through it and he did a superb job, with very little options.
As we went down we tried to head toward a small piece of tundra next to the lake, but as we flared to land, the engine sputtered again a couple times, which shoved us out over the lake; and then it quit again entirely.
We continued to glide as close to shore as we could, slowed the plane down as much as we could and immediately before hitting the water, pulled on full flaps and full aft stick. Both of us remember the tail hitting slightly first, and then the main gear hitting the water.
As soon as the main gear hit the water, the plane immediately flipped over --- very very quickly. The front window broke out, and both of us got the full smash of water coming into the plane --- of course the front seat person getting most of it.
The plane stayed partially submerged but on the surface just long enough for us to both get out and then sank fairly quickly. Getting out was a bit difficult being upside down and in the water -- everything is backwards and all reference points are in the wrong place. It was actually easier for me to open the door cause the back seat person reaches forward -- so I opened the door, got myself out, and then turned around and helped pull the pilot out.
It was a scary situation, that I hope I never go through again. After years of Alaska bush flying I have had a number of interesting things, but this was not one to repeat.
Things that I learned and would emphasize:
1. FLY THE AIRPLANE -- All the way to the ground (or water)
2. FLY THE AIRPLANE
3. It is amazing how quickly something 1500 lbs., and over 20 ft. long can turn over -- it happens in an instant.
4. Make sure you can get out of your airplane blindfolded. And if you ever get a chance to get some emergency egress training -- do it. I have done it since, and wish I had done it before. (especially if you do float flying)
5. In an emergency egress situation, probably the only survival gear you will have is what you are wearing. Luckily it was summer, and we were near town, and rescued right away. If we had been away from town, we could have been in trouble -- all of our survival gear sank 60 ft. into the lake with the plane.
6. I would suggest some type of helmet for all off airport work. Both of us got thrashed and bumped about quite a bit. No major injuries but lots of sore stuff. I also do a lot of helicopter work and we always wear helmets, but now I do in the cub also. (you might not look quite as "bush cool" but it keeps radio knobs out of your forehead.)
7. Things happen fast, so you better be ready
8. And I know I already said it, but the most important is -- fly the airplane-- all the way to the ground. I have had a number of interesting Alaska experiences, and in my job have seen many, many airplane crashes -- and the worst ones are always cause the pilot forgot to fly the plane.
As far as damage to the plane during the crash the only major damage was cowling dents and the front windshield. The left struts were crushed by the airbags when it was floated to the surface, which caused the left wing to rotate toward the rear -- so the left flap punched through the left rear D window. When we were hitting the water we really concentrated on staying straight so it did not cartwheel -- so there was very little damage. More damage occured during the recovery then the crash.
I hope this helps -- stay safe
Mark