Sealing seams is important for which primary reason?

Sealing seams is crucial primarily to prevent moisture intrusion. In aircraft fabric covering, moisture can lead to significant deterioration of the fabric and the underlying structure. If seams are not properly sealed, water can seep through, which can cause issues such as mold growth, reduced fabric strength, and even corrosion of the aircraft's metal components. Keeping moisture out helps ensure the longevity and safety of the aircraft, maintaining its performance and operational readiness.

While aesthetics, color enhancement, and structural integrity are important considerations in aircraft design and maintenance, they do not serve the primary function of seam sealing. The focus on moisture prevention underscores the need for effective sealing practices in the fabric covering process to protect the aircraft from environmental challenges.