Commercial Pilot License (CPL) Practice Exam 2026 - Free Commercial Pilot License Practice Questions and Study Guide

The use of pneumatic inflatable boots is a common method for de-icing airframes, particularly in small to medium-sized aircraft. This system employs rubber or synthetic boots that are attached to the leading edges of the wings and tail surfaces. When ice accumulates on these surfaces, the de-icing process is initiated by inflating the boots with air, which then expands and breaks the ice away from the surface.

This method is effective in removing ice quickly and can be activated by the pilot as needed, allowing for control over the de-icing process. The use of inflatable boots is advantageous because they do not require the aircraft to carry additional equipment or fluids, making them relatively lightweight and easy to implement.

In contrast, other systems such as electrical heating systems and fluid spraying systems address de-icing differently. Electrical heating systems utilize heated surfaces to melt ice but may not be as effective in all conditions. Fluid spraying systems can be effective for anti-icing, but they typically involve the use of certain fluids that can be messy or add weight. Heat exchangers, while sometimes used in other contexts of aircraft systems, are not typically associated with de-icing procedures. Thus, pneumatic inflatable boots stand out as a widely recognized and efficient method for de-icing