## Chapter 6$_{ }$ Airborne Navigation Databases 

## Introduction 

Area Navigation (RNAV) systems, aeronautical applications, and functions that depend on databases are widespread. [Figure 6-1] Since the 1970s, installed flight systems have relied on airborne navigation databases to support their intended functions, such as navigation data used to facilitate the presentation of flight information to the flight crew and understanding and better visualization of the governing aeronautical flight charts. With the overwhelming upgrades to navigation systems and fully integrated flight management systems (FMS) that are now installed in almost all corporate and commercial aircraft, the need for reliable and consistent airborne navigation databases is more important than ever. 

