On Monday, September 16, 2019 at 10:51:07 AM UTC-7, Bob Youngblood wrote:
On Monday, September 16, 2019 at 11:22:06 AM UTC-4, Charles Longley wrote:
Interesting that someone put an O-470 on a Pawnee. Do you know which model it is?

To answer your question the TOST tow release comes with an STC. W&W does a pretty good job supporting them.
Here’s the standard one-
https://wingsandwheels.com/aircraft-...-for-pa25.html
If your club wants to spend a lot more money and go to a retractable one here’s the link-
https://wingsandwheels.com/aircraft-...-for-pa25.html
Pros and cons for each. Depends on how your club operates.

I would put the release in front of the throttle where the pilot can easily see it. One of the Pawnee’s I fly is set up that way. The other two use the stock dump lever. Which is acceptable but not as convenient to reach.

Any IA can sign off the FAA form 337 to document the conversion. The approved data will come from the STC and AC 43.13.

Hope this helps.
Charlie

The TOST DOES NOT come with a STC. It comes with an EASA1 European form not a STC. Read 43-13-2A Chapter8, page 73-75, Circular adv. This is not as difficult as one might think. Bob

I've only put one on and it was a couple of years ago. I thought it had an STC. Call W&W to check. My memory isn't perfect. I do remember it being a relatively easy install and 337. Correct on AC 43-13-2A. That's the data I used. Not a big deal.

I 100% agree on getting rid of the Schweizer hook! I wont tow with one. The sense I got from the Mike (duster) is they want to put one on but need to research cost. With a club it needs to be approved by their board typically.. I am more than happy to provide info to make it safer.