What advantage does RNAV provide to pilots?

The correct choice highlights a significant benefit of RNAV (Area Navigation) systems in aviation, which is that they require fewer navigational aids compared to traditional navigation methods. RNAV allows pilots to navigate on predefined flight paths using GPS or other onboard systems rather than relying solely on ground-based navigational aids like VORs or NDBs. This capability enables more efficient route planning, as pilots can fly directly from point to point without the need to be in proximity to these navigational aids.

By relying primarily on GPS and onboard systems, RNAV enhances flexibility in flight planning, allowing for more optimized routes that can improve fuel efficiency and reduce flight times. Additionally, it supports performance-based navigation which can lead to improved safety and efficiency in air traffic management.

The other choices do not accurately reflect the advantages of RNAV. For example, it does not increase the need for visual navigation, as RNAV systems are designed to improve navigational accuracy, thereby reducing reliance on visual cues. Similarly, RNAV does not impose limits on flight altitudes; instead, it often allows for altitude flexibility as it enhances navigation precision. Lastly, RNAV systems actually enhance the accuracy of navigation rather than reduce it, which is a fundamental advantage that pilots rely on for modern