Which of the following best defines "Maintenance" in the context of the PCAR?

The definition of "Maintenance" in the context of the PCAR (Philippine Civil Aviation Regulation) is best captured by the statement that it encompasses the performance of tasks required to ensure the continuing airworthiness of an aircraft. This definition accurately reflects the primary goal of maintenance in aviation, which is to keep the aircraft safe and operational while adhering to regulatory standards.

The focus on ensuring ongoing airworthiness highlights the critical importance of regular maintenance tasks. These tasks include inspections, corrective actions, and any necessary adjustments that adhere to safety regulations. This aligns with the overall objectives of aviation safety and compliance set forth in aviation regulations.

The other options, while touching on aspects of maintenance, do not encompass the full definition as effectively. For instance, defining it as a combination of specific tasks without emphasizing airworthiness (as seen in the other statements) would miss the central theme of maintaining safety standards crucial to aviation operations. Therefore, the emphasis on airworthiness in the context of aviation makes this answer the most comprehensive and aligned with regulatory requirements.