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Building an Approach

A flight operational safety assessment is often a key element in developing an RNP AR approach.

by Mario Pierobon | August 17, 2022

A required navigation performance (RNP) authorization required (AR) approach is a particular type of approach to landing developed according to the performance-based navigation (PBN) concept. An RNP AR approach requires a higher level of performance, and it allows for a reduced protected area for obstacle clearance. In addition to implying specific qualification levels for the aircraft, the airport and the flight crew, RNP AR approaches often also require a flight operational safety assessment (FOSA) — a review of the aircraft, crew and operating environment to ensure all-around safety.


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