What is the primary cause of wood decay in aircraft?

Moisture is the primary cause of wood decay in aircraft due to its role in fostering biological activity, particularly that of fungi and bacteria that thrive in damp conditions. When wood absorbs moisture, it can lead to a breakdown of its structural integrity, resulting in rot and decay. This is particularly concerning in aviation, where the strength and weight of materials are critical for safety and performance.

Understanding the impact of moisture underscores the importance of proper maintenance and storage practices for wood components within aircraft. Ensuring that wood is kept dry and protected from water exposure is vital in preventing decay and preserving the material’s properties. While insects and improper storage can contribute to wood damage, they are often secondary factors that amplify the risks associated with moisture. Sunlight exposure can damage wood finishes but does not directly cause decay in the way that moisture does.