The Cessna 120-140 Association Forum

I have a c140 with an 0-290d that is coming up on overhaul. I was wondering if anyone has gotten an approval for the 0-320

Rob builtstronger@me.com

I doubt it; I believe engines are one of the things HQ says no field approvals for. STC or bust.

Do you know of anyone who has gone down that route?

8488 wrote: ↑Sat May 16, 2020 4:37 pm Do you know of anyone who has gone down that route?

I'm not aware of any. Perhaps the individuals who hold the STCs for the other engines may be able to give you a reference.

Wait, what am I missing? Why not just use the O-320 STC?

6643 wrote: ↑Tue May 19, 2020 8:35 am Wait, what am I missing? Why not just use the O-320 STC?

Is there really an O-320 STC? I"m thinking this is a joke, but maybe?

No, no joke. I'm 99-44/100% certain there is an STC. I'm thinking it was McKenzie. I think those STCs have been transferred to Gus Warren. I've seen one. It was a single seater for all practical purposes.

[Edit] Did some checking and I couldn't find it. I did find one for the Cessna 150, though. SA1034SW. That might be a good place to start for a field approval. C85 -> O200 -> 150 -> O320...

I flew a Luscombe with an O-320 getting current in conventional gear airplanes.
Very robust performance.
Almost too much if you put the power in to fast.

I do not know if it was installed with an STC or field approval for it.

Rick

Keep us posted on how things go. When my O290D comes up for overhaul I'm going to look very carefully at the O320. Would love to develop an STC for one, but I don't even know where to start.

8359 wrote: ↑Mon May 25, 2020 10:05 pmWould love to develop an STC for one, but I don't even know where to start.

A bank loan...