What should be the primary concern when selecting fabric covering materials?

When selecting fabric covering materials for aircraft, the primary concern should be the material's strength and durability. These attributes are crucial because the covering must withstand various environmental conditions, as well as the stresses and strains encountered during flight. Strong and durable materials help ensure the safety of the aircraft by providing a reliable barrier against elements such as wind, moisture, and potential impacts.

The strength of the fabric contributes to its resistance to tearing and abrasion, factors that are especially important in aviation where conditions can be harsh. Additionally, durable materials help maintain the integrity of the aircraft over time, reducing the need for frequent replacements or repairs. Therefore, focusing on strength and durability is essential to ensure the longevity and performance of the aircraft covering, which ultimately impacts both safety and operational costs.