What factors are considered in an RNAV approach?

The RNAV (Area Navigation) approach relies heavily on precise navigation to enable aircraft to fly to their destination with accuracy, often using systems like GPS as the foundational technology. The core objective of an RNAV approach is to allow pilots to navigate along predetermined flight paths in a three-dimensional space, enhancing efficiency and safety.

The use of GPS and other navigational aids for precision ensures that the aircraft can accurately follow the designated flight path, which is critical for successful approach and landing phases. This precision is vital for maintaining safe separation from terrain and other obstacles, as well as aligning correctly with the runway.

While other options present factors that can influence flying and landing, they do not directly pertain to the specific navigational capabilities and functionalities central to an RNAV approach. For instance, visibility and cloud cover influence safety and operational decisions but are not intrinsic to the RNAV system itself. Likewise, wind speed and aircraft weight are essential considerations for flight operations but relate more to performance rather than the RNAV technology utilized during an approach.