What navigation performance requires onboard monitoring and alerting?

What navigation performance requires onboard monitoring and alerting?

• A. RNP
• B. RNAV
• C. GNSS
• D. AOC

Answer: (A)

RNP, or Required Navigation Performance, is defined by a specified level of navigation accuracy and integrity that must be continuously demonstrated. A key feature of RNP is onboard performance monitoring and alerting: the aircraft’s navigation system constantly checks how well the sensors are meeting the required performance, and it will alert the crew if the performance falls outside the specified limits. This onboard monitoring ensures you stay within the protected path and provides timely warnings to take action if accuracy or integrity degrades. RNAV is a broader navigation method that uses waypoints to define routes but does not inherently require onboard monitoring and alerting as part of the navigation performance specification. GNSS refers to satellite-based navigation and may include integrity checks, but the requirement for explicit onboard monitoring and alerting tied to a performance specification is a hallmark of RNP. An AOC is an operational certificate and not a navigation performance standard.

RNP, or Required Navigation Performance, is defined by a specified level of navigation accuracy and integrity that must be continuously demonstrated. A key feature of RNP is onboard performance monitoring and alerting: the aircraft’s navigation system constantly checks how well the sensors are meeting the required performance, and it will alert the crew if the performance falls outside the specified limits. This onboard monitoring ensures you stay within the protected path and provides timely warnings to take action if accuracy or integrity degrades.

RNAV is a broader navigation method that uses waypoints to define routes but does not inherently require onboard monitoring and alerting as part of the navigation performance specification. GNSS refers to satellite-based navigation and may include integrity checks, but the requirement for explicit onboard monitoring and alerting tied to a performance specification is a hallmark of RNP. An AOC is an operational certificate and not a navigation performance standard.