The FMS meets the enroute, terminal, and non-precision approach lateral performance/accuracy criteria of which advisory circular?

The FMS meets the enroute, terminal, and non-precision approach lateral performance/accuracy criteria of which advisory circular?

• A. AC20-130A
• B. AC90-100A
• C. AC20-140A
• D. AC91-60A

Answer: (A)

FMS lateral performance across enroute, terminal, and non-precision approach phases is defined by the FAA advisory circular that provides guidance on navigation performance for avionics systems, including flight management systems. This circular explains how an FMS’s lateral navigation functions should perform, how accuracy is measured, and how the system is tested and documented to meet the required standards in those flight phases. That focus on the navigation performance criteria for FMS-based LNAV operations is why it is the best fit. The other advisories cover topics such as general airworthiness/certification of other systems or procedures and do not specify the FMS lateral performance criteria used for those flight phases.

FMS lateral performance across enroute, terminal, and non-precision approach phases is defined by the FAA advisory circular that provides guidance on navigation performance for avionics systems, including flight management systems. This circular explains how an FMS’s lateral navigation functions should perform, how accuracy is measured, and how the system is tested and documented to meet the required standards in those flight phases. That focus on the navigation performance criteria for FMS-based LNAV operations is why it is the best fit. The other advisories cover topics such as general airworthiness/certification of other systems or procedures and do not specify the FMS lateral performance criteria used for those flight phases.