To manage cabin heat if you're in icing conditions, what should you do?

In icing conditions, it is vital to manage cabin heat effectively to ensure clarity of vision through the windshield and maintain a safe flying environment. The option to pull the cabin heat control full out and open defroster outlets is correct because it increases airflow directly onto the windshield, helping to prevent ice buildup and maintain visibility.

By fully engaging the cabin heat control, you direct warm air to the critical areas that need it most—especially the windows. Opening defroster outlets also focuses that airflow specifically to clear any ice or snow that may form on the glass, which is essential for safe operation under these conditions. This proactive approach helps ensure that the pilot can see clearly and operate the aircraft safely.

In contrast, turning off the cabin heat would exacerbate visibility issues, while maintaining a constant temperature might not effectively address the immediate needs of defrosting and de-icing areas of the aircraft susceptible to ice build-up. Opening defroster outlets alone without increasing cabin heat may not provide sufficient warmth to adequately combat icing, making the full engagement of both systems necessary for optimal safety and performance in icy conditions.