What are the privileges of a Certifying staff category C only?

The privileges of a Certifying staff category C encompass specific responsibilities and authority related to the release of aircraft and components to service after maintenance. One of the key privileges assigned to this category is the authority to release to service after base maintenance. Base maintenance generally refers to more extensive and thorough checks that are performed on the aircraft, often involving significant inspections, repairs, and overhauls.

This task requires a higher level of training and expertise compared to line maintenance, which is usually more routine. Therefore, being able to release an aircraft or component to service after base maintenance signifies that category C staff possess the necessary qualifications and certifications to ensure that all relevant maintenance requirements and safety standards have been met before the aircraft or component is returned to service.

The other options pertain to various levels of maintenance tasks, which may not fall within the authorized responsibilities of a category C certifying staff. For example, releasing to service after line maintenance often involves less complex tasks that may allow for certifying staff of a different category to perform this function. Similarly, releasing components after minor repairs or after overhaul in a workshop could also relate to different categories of certifying staff. Thus, the focus on the ability to release to service after base maintenance highlights the advanced role and critical responsibilities