Which factors are used to define area navigation (RNAV) or required navigation performance (RNP) system performance requirements?

The correct answer encompasses three key factors that significantly define the performance requirements of area navigation (RNAV) or required navigation performance (RNP) systems: accuracy, integrity, and continuity.

Accuracy refers to the degree to which the navigation system can provide the actual position of the aircraft with precision. High accuracy is essential for safe and effective navigation, especially in complex airspace or during approaches to airports.

Integrity is related to the trustworthiness of the navigation information. It indicates the system's capability to detect potential errors in navigation data. A system with high integrity ensures that if there is a significant deviation from the designated flight path, the error will be identified and communicated to the pilot, thus enhancing safety.

Continuity is a measure of the system's capability to perform the required navigation function without interruption. It assesses how consistently the navigation system can function and maintain performance over time without failure. This factor is crucial for maintaining compliance with air traffic procedures and avoiding disruptions during critical phases of flight.

While accuracy is present in all options, the inclusion of integrity and continuity alongside it in the correct answer highlights the comprehensive nature of RNAV and RNP performance requirements. This recognition of multiple facets ensures that a navigation system is robust and reliable, ultimately contributing to the safety and efficiency