Looks like we need to employ services of an IA to inspect it for us.
Yeah - if you are going to ship it all the way across the Atlantic - you might want to get at least an AP look at it.
You might get offered a "Yellow Tag" on it. A sort of meaningless "Maintenance Release". See this article as to why it doesn't really hold legal authority - though it is commonly used over here.:
https://www.aviationpros.com/aircraft/defense/article/12008258/faa-feedback-the-yellow-tagAt the end of the day it will be the installing mechanic who is going to have to declare it airworthy. But a yellow tag might be a sort of start.
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There are some "wear" parts you should consider replacing - even if the rudder comes with them:
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The pivot/hinge bushings - you can get PMA parts from the club sponsor McFarlane:
https://www.mcfarlaneaviation.com/products/product/RBC-KT-1/These are cheap and really a must.
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The plastic tip and bottom which will probably be brittle and possibly damaged. You can get these from a number of places - but again - McFarlane do new PMA for these.
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And back to that bellcrank - No one seems to make new on these yet - but it's the one thing I would have looked at extra carefully for wear around the pivot holes and be prepared to get another from a rudder that might be in worse shape but with a better bellcrank.
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Email Club Member James Rhoades - last time I saw a picture of his hangar - he had a lot of "stuff" - and it might include a 150 rudder.
https://www.cessna150152.com/forum/ubbthreads.php/users/5809/james-rhoades.html--
Finally - bump this post in about 12 days. A lot of members who could probably contribute or help here are at Clinton for the Fly in or Oshkosh for AirVenture. They might not be paying a lot of attention here.