To achieve effective defogging, where should the vent control lever be positioned?

For effective defogging in the T-6 aircraft, positioning the vent control lever to CANOPY is essential. This position allows the airflow to be directed towards the canopy, helping to clear any moisture or fog that may accumulate on the inside of the transparent surfaces. The goal is to increase air circulation and utilize the warmer, drier air to prevent condensation, thus ensuring a clear view for the pilot.

In the context of the other options, the overhead vents and forward position may not provide the targeted airflow needed for defogging as effectively. The footwarmers, while beneficial for distributing heat to the lower part of the cockpit, do not contribute to clearing the canopy. Hence, directing the airflow towards the canopy is the most effective method for defogging and maintaining visibility during flight.