SA122NW STC info needed C175

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Eduardo Gueiros

Filing Flight Plan
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May 10, 2021
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EdGs
We recently acquired a 175 TW conversion with a 0-470 (SA122NW STC). While we have the STC document itself, the plane as no updated performance charts based on the new engine.

I know that the STC belongs to Park Robert M, but read in several forums it's basically not possible contacting the guy.

Anyone has any lead on where/who I could possibly contact for information about it?

Thank you!
 
Eduardo Gueiros said:
I know that the STC belongs to Park Robert M,
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The current STC revision shows the following holder. STCs get sold/transferred all the time so its best to always check the latest versions on the FAA website. And since you have the STC installed they are required to supply certain documents. Contact the person listed below and include the particulars of your installation and see what happens. If no response there is a route to obtain the necessary documents you need via the FAA. But you have to show your contacts with the current STC holder failed.

SA122NW
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I see. Thanks for the insight. Will try to track down the current owner. Thank you!
 
There may not be any additional performance changes with this STC approval. No AFMS or supplementail flight manual supplement listed on the STC cover sheet. Some STC’s only approve installation due to the costs of the tests required to increase performance.
 
Bob passed away several years ago. Mark now has the STC.
Our glider club has a 175 with this engine STC. There are no additional performance charts that I'm aware of.
 
tonycondon said:
Bob passed away several years ago. Mark now has the STC.
Our glider club has a 175 with this engine STC. There are no additional performance charts that I'm aware of.
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Do you have Mark's contact info? I'm trying to clean up the STC paperwork my grandfather had with Bob from long ago and complete a project.

I'm going to send a letter to that address listed but I would prefer to give him a call.
 
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