Big Pistons Forever: So you are suggesting that carb ice can form after extensive before takeoff check (which includes checking for proper operation of carb heat), after the engine has been running smooth under cruise power and even with applied carb heat (which is common procedure) during PFL? And let's say it's a normal summer day (not 0°C with > 95% humidity)...
If this is true, I don't know why we even have carb heat if it doesn't prevent carb ice formation...
