Which three elements are essential for achieving QA?

The essential elements for achieving Quality Assurance (QA) focus on the necessary competencies and processes that ensure a product or service meets specified standards. The correct choice highlights the importance of special skills and knowledge, which are critical in maintaining high-quality standards in any aviation maintenance environment.

Special skills refer to the unique technical expertise required to address specific tasks, which can significantly influence the quality of maintenance operations. Knowledge encompasses understanding regulations, best practices, and the intricacies of aircraft systems, which are vital for making informed decisions that support safety and operational readiness. Prevention is central to QA, as it is the proactive approach that involves anticipating potential problems and implementing measures to avoid them, rather than simply reacting to issues after they arise.

In contrast, while elements such as resources, technical manuals, and compliance are important to the overall maintenance process, they do not encapsulate the core competencies necessary for effective QA as precisely as special skills, knowledge, and prevention do.