What type of navigation does Area Navigation (RNAV) allow?

Area Navigation (RNAV) is a method that allows aircraft to fly on any desired flight path within the coverage of station referenced navigation aids or within the limits of the capability of self-contained systems, or a combination of both. This capability enables pilots to navigate directly between predetermined waypoints in the airspace, regardless of the location of ground-based navigational aids.

This flexibility is crucial for modern aviation, as it supports more efficient routes, reduces flight times, and enhances safety by allowing for better air traffic management. It’s designed to optimize the use of airspace and improve the efficiency and safety of flights.

The other options do not encompass the full capabilities of RNAV: relying solely on landmarks is limiting and does not leverage available technology, while being exclusive to ground-based navigational aids does not reflect the full range of navigational options available with RNAV. Additionally, solely depending on autopilot systems does not accurately describe RNAV, as it requires active management and input from the flight crew.