Which statement correctly contrasts RNAV and RNP in navigation performance expectations?

Which statement correctly contrasts RNAV and RNP in navigation performance expectations?

• A. RNAV requires more monitoring than RNP.
• B. RNP adds performance requirements and monitoring for containment, while RNAV does not require the same level of performance monitoring.
• C. RNAV and RNP require identical levels of monitoring.
• D. RNP omits any navigation data in flight.

Answer: (B)

RNP adds containment and onboard performance monitoring, while RNAV does not require the same level of performance monitoring. In performance-based navigation, RNP specifies not only the path to fly but also a required accuracy (containment) and a system that continually checks actual performance against that requirement. If the aircraft drifts beyond the defined tolerance, the onboard monitoring and alerting flag it, helping the crew stay within the intended corridor. RNAV, by contrast, provides lateral guidance along a route using satellite or other navigation inputs but does not inherently mandate this containment monitoring or alerting. So, the statement that RNP imposes performance requirements and monitoring for containment, whereas RNAV does not demand the same level of performance monitoring, correctly contrasts the two.

RNP adds containment and onboard performance monitoring, while RNAV does not require the same level of performance monitoring. In performance-based navigation, RNP specifies not only the path to fly but also a required accuracy (containment) and a system that continually checks actual performance against that requirement. If the aircraft drifts beyond the defined tolerance, the onboard monitoring and alerting flag it, helping the crew stay within the intended corridor. RNAV, by contrast, provides lateral guidance along a route using satellite or other navigation inputs but does not inherently mandate this containment monitoring or alerting. So, the statement that RNP imposes performance requirements and monitoring for containment, whereas RNAV does not demand the same level of performance monitoring, correctly contrasts the two.