What type of test must a certificated parachute rigger pass to apply for an additional type rating?

To apply for an additional type rating as a certificated parachute rigger, the required assessment is a practical test. This practical test is essential because it directly evaluates the rigger's hands-on skills and ability to perform specific tasks related to the new type rating. The nature of rigging work is intricate and often requires demonstrated proficiency in manipulating and securing parachutes and related equipment safely and effectively.

While written assessments and oral tests can provide knowledge and understanding of the theoretical aspects, the practical test ensures that the individual can apply this knowledge in real-world scenarios. It reflects the riggers' ability to execute procedures and adhere to safety protocols crucial for parachute rigging.

Even though other choices may involve different forms of assessment, the practical test alone focuses on the essential skills needed for rigging operations, making it the correct answer for gaining an additional rating.