Is compression wood considered acceptable for structural repairs?

Compression wood is classified as a type of wood that has been subjected to abnormal growth due to stress, which leads to irregularities in its structure. These irregularities can result in weaknesses that compromise the integrity and strength of the wood, making it unsuitable for structural applications.

In the context of aircraft, materials used for structural repairs must meet strict standards to ensure safety and performance during operation. The presence of compression wood could lead to unpredictable behavior under load, thereby posing a significant risk. Therefore, aviation regulations and best practices dictate that only high-quality, properly graded wood should be used for structural repairs to maintain the airworthiness and safety of the aircraft.