The Cessna 120-140 Association Forum

Hello everyone, take a look at the attached pic of my rudder. You'll note several rows of rivets in the center of the rudder skin. I know from peering into the rudder interior that these rivets are used to attach L-shaped stringers to the skin. I had initially presumed that these stringers were part of the factory design, but after reviewing the Univair bill-of-materials for a new rudder, I don't find any mention of these stringers. I'm now thinking that these were added to my rudder as part of a previous repair. Can anyone comment on this? Were these part of the factory design?

8475 wrote: ↑Mon Nov 30, 2020 1:22 pmWere these part of the factory design?

No, but I've seen all sorts of "creative" solutions to distorted rudder skins.

Mine definitely does not have them and it’s a very original 1946 model.

Looks like a repair the trailing edge should be welds like the leading edge is.