On Tue, 30 Nov 2004 15:09:00 GMT, "John Kirksey"
wrote in g20rd.14599$%C6.279@trnddc02::


My question is, in these or similar conditions, would you consider using at
least partial carb heat to help prevent icing, or periodically turn the carb
heat on to clear out any ice that may have formed?

It depends on the recommendations in the POH for that aircraft type.
For Piper PA28-* full heat is recommended.

Is there ever a time when you would use carb heat as a preventive measure?

In a Cessna 150/2 operating in conditions that cause carb ice whenever
the carb heat is turned off, I use enough heat to keep it clear.