Which classes of products can be certified by Designated Airworthiness Representatives?

Designated Airworthiness Representatives (DARs) have the authority to certify a wide range of products, specifically belonging to Class I, Class II, and Class III. Each class of product pertains to the regulatory framework set by the FAA regarding how aircraft and associated components are classified based on their complexity, risk, and the level of safety required.

Class I products generally include small and uncomplicated systems, while Class II products may involve more complex systems but are still not as critical as those in Class III, which often include large aircraft and their primary structures or systems. The training and certification that DARs receive equip them to evaluate and approve the airworthiness of all these classes, ensuring that they meet safety and regulatory compliance.

Therefore, the capability to certify products across all three classes reflects the comprehensive scope of the DAR's role in aviation safety and regulation, making the assertion that DARs can certify Class I, II, and III products entirely accurate.