What are most wood aircraft structure repairs classified as?

Most wood aircraft structure repairs are classified as major repairs due to the significant impact that wood properties and integrity have on the overall safety and performance of the aircraft. Wood is a natural material that can be susceptible to various forms of deterioration, including rot, moisture absorption, and insect damage. When addressing issues with wooden structures, repairs often require substantial alterations or replacements to restore the component's structural integrity.

Major repairs typically involve detailed inspections and modifications that may significantly affect the aircraft's airworthiness or structural strength. This classification ensures that repairs are conducted with thorough oversight, often requiring specific documentation and approval from aviation authorities. In contrast, minor repairs would usually involve less critical elements that do not greatly compromise the structure or safety of the aircraft. Structural modifications and composite replacements are unrelated classifications that do not encompass the typical scope of wood aircraft repairs.