What is the recommended solution for de-icing the canopy?

The recommended solution for de-icing the canopy is a mixture of 50% water and 50% alcohol. This solution is effective because alcohol has a lower freezing point than water, which helps to prevent ice from forming on the canopy surfaces. The combination of alcohol and water allows for a balance that provides both anti-icing properties and a degree of hydration, helping to ensure that the de-icing process does not damage the plastic or coatings typically used on aircraft canopies.

Using pure alcohol could evaporate too quickly and may not provide sufficient moisture to effectively remove ice. Pure water lacks the necessary properties to effectively lower the freezing temperature and would not be effective in de-icing under cold conditions. A saltwater solution can cause corrosion and damage to the canopy materials due to the presence of salt, which is why it is not recommended for this purpose.