scope:

PURPOSE

These criteria are the Federal Aviation Administration (FAA) standard for developing instrument approach procedures based on required navigation performance (RNP) using area navigation (RNAV) avionics systems. Criteria are specified for approach procedures based on minimal mandatory equipage enabling the largest possible population of users to realize the benefits of RNP. Additionally, criteria are provided for more sophisticated procedures requiring higher levels of equipage, and associated operational requirements to achieve special authorization for use. This order, a proposed 90-series Advisory Circular (AC), and a proposed 20-series AC will provide the foundation for RNP instrument flight rule (IFR) operations.