It all depends, of course, on cost of consumables and repairs. Just an "inspection" Annual with nothing wrong will be between 1 and 2 K Depends on how indepth the AME wants to go will determine the amount of hours.

Hi Photofly! Thanks very much for the reply. I read the document and specifically the appendix and paragraph that you included and yes, indeed. That is what it seems to say. I have an old 172 and I want to replace the O300. Do you know if this level of modification requires anything else other than ...

Good day boys
I'm looking at an STC from the U.S. but it's not in T.C.'s database.
Can one install an American STC in our Canadian registered aircraft? What is the authority required?
What is the required procedure?

Thanks in advance!
D