Aircraft structural units built from sheet metal are generally considered to be:

Aircraft structural units made from sheet metal are generally considered repairable using approved methods due to the inherent properties of the material and the practices established in the aviation industry. Sheet metal is often used because it provides a good combination of strength and weight, allowing for effective structural designs.

When damage occurs, whether from impact, corrosion, or fatigue, there are various approved repair techniques that can restore the structural integrity of the aircraft. These methods may include patching, resurfacing, or replacing damaged sections while maintaining the overall strength and safety of the structure. Regulations and standards set by aviation authorities provide guidelines ensuring any repairs meet the required specifications for airworthiness.

As aircraft are often subject to strict maintenance and repair protocols, discarding structural units after damage or considering them non-repairable does not align with standard industry practices. Instead, the emphasis is on identifying the best methods to address the damage effectively and safely. This belief in repairability helps ensure longer life spans for aircraft components, reflecting a commitment to safety and resource management in aviation.