What is one type of wood defect that can indicate decay?

Pitch pockets can indicate decay in wood because they are cavities or voids that form in the wood, often filled with resin. The presence of pitch pockets can suggest that the wood is compromised, as these cavities may allow for moisture ingress, which can lead to decay and fungal growth. Additionally, pitch pockets can result from stress on the tree, which can predispose it to weakening and further decay over time. Recognizing this defect is important for assessing the overall health and usability of wooden materials in aviation applications, where structural integrity is crucial. By identifying pitch pockets, maintenance personnel can make informed decisions about the serviceability of wood components.