DiracHatedFrench

How much can you squat? (Please specify if high bar or low bar).

http://flighttraining.aopa.org/images/ft_magazine/article_art/0805carb_illo.jpg

There's a good illustration. It's emphasized fairly heavy in pilot training and there are definite signs if it's happening. Going down due to carb icing is usually pilot error (carb-equipped 182s have a carb heat knob that when pulled diverts air heated from the exhaust manifold into the carb instead of the cool ambient air, thereby preventing icing although decreasing engine performance due to the fact that hot air is less dense than cool air so there is less oxygen for the engine to burn).

Regardless, modern planes are now fuel injected and it's a non-issue (although people are still flying 40+ year old 182s).