What is the primary responsibility of a QAR?

The primary responsibility of a Quality Assurance Rep (QAR) is to certify that maintenance work has been personally inspected and meets all quality standards before it is returned to service. This role is crucial in maintaining aircraft safety and airworthiness. A QAR ensures that proper procedures were followed during maintenance and that all repairs and modifications comply with established regulations and guidelines. By conducting thorough inspections and verifying that the tasks were completed to the required standards, the QAR plays a vital role in the overall safety and operational readiness of the aircraft.

The other options, while important in various contexts of aviation maintenance and management, do not define the core role of a QAR. Ordering aircraft parts, planning maintenance budgets, and scheduling training are all essential functions within an aviation maintenance organization, but they do not specifically relate to the primary duties associated with a QAR's responsibility for inspection and quality assurance.