879HZ is now my favorite Cessna 172 in West Valley's fleet because it's actually clean inside and it has more advanced avionics. But 186CS was once my favorite. My first flight, my first night flight, the first time I felt that I "got it"... were all in 186CS.
I saw this while walking through the Palo Alto ramp area:
What happened to the prop?
Then I looked closer and... it's more than just the prop:
I guess this is what an engine overhaul looks like?