Propeller Options
 

When these props wear out, what are the options for putting something like a MT Prop on a normally aspirated 337?

"Something like" an MT?

You can put 3-bladed MT props on all of the early 337s (337->337F.)

https://www.mt-propeller.com/pdf/stcflyer/FL009US.pdf

Actually it's 336's, the 337M/02 and ALL of the non-turbo/non-pressurized 337's. The PDF you linked is older copy of what's on MT's website:

https://www.mt-propeller.com/en/entw...ssna_336_1.htm

JB, not sure what you're flying now but the MT's are GREAT. I have them and love them. I think Herb has been flying them for more than a decade now.

I know there's are least one turbo bird (field approval I guess?) that's got them installed. Also, talk to Flight Resources:

http://www.flight-resource.com/Contact.aspx

They'll support field approval of the newer Scimitar blade design used on the Cirrus SR22 which is the same powerplant as our birds.

https://www.mt-propeller.com/en/entw/stcs/cirrus_3.htm

Another pressurized bird with 3 bladed MT's:

https://www.aso.com/listings/spec/Vi...1064&dealerid=

STC has been expanded to all 337's including pressurized and turbocharged.

https://www.mt-propeller.com/pdf/stcflyer/FL009US.pdf