Name a common type of fabric covering system.

The Poly-Fiber system is a widely recognized fabric covering system used in the aviation industry due to its durability, light weight, and excellent performance characteristics. This system is made from a synthetic material that offers significant resistance to ultraviolet light and environmental conditions, making it a popular choice for both recreational and competition aircraft.

Poly-Fiber has a comprehensive application process that includes heat-shrinking the fabric to ensure a tight fit, and it can be painted with a variety of finishes that help protect it from wear and tear. The system is also known for its simplicity in application and maintenance, making it suitable for both professional and amateur builders.

In contrast, other systems like Kevlar are typically used for structural components rather than surface covering due to their specific strength properties. Nylon, while durable, does not offer the same level of UV resistance and environmental protection as the Poly-Fiber system. Silk, while historically significant in early aviation, has mostly been replaced by modern fabrics like Poly-Fiber due to advancements in technology and performance standards. Hence, the Poly-Fiber system stands out as the most common and practical choice for aircraft fabric covering.