What is a common cause of deterioration in wooden aircraft structures?

A common cause of deterioration in wooden aircraft structures is moisture and insect damage. Wood is a natural material that is susceptible to various environmental factors, with moisture being one of the most significant. When wood absorbs moisture, it can swell, warp, or rot, compromising its structural integrity.

In addition to moisture, insects such as termites and wood-boring beetles can attack wood, causing further damage by tunneling through the material and weakening it. This combination of moisture exposure and insect activity can significantly reduce the lifespan and safety of wooden aircraft structures, making it crucial for owners and maintainers to inspect and care for wooden components regularly.

While overexposure to sunlight can degrade finishes and cause some surface-level issues, it is less impactful than moisture and insect damage on the overall structural integrity. Excessive weight does not directly cause deterioration but may lead to structural stress and is more relevant to overall design and performance. Technical failures in design can certainly be problematic, but they are not a natural cause of deterioration like moisture and insect damage.