What is the function of an FMS in aviation?

The function of a Flight Management System (FMS) in aviation is primarily focused on flight path management. An FMS is an advanced onboard computer system that integrates various navigational data and assists pilots in route planning, navigation, and performance management throughout the flight's duration.

The system provides necessary information, such as waypoints, airways, and estimated times of arrival, helping pilots efficiently manage the aircraft's trajectory. Not only does it enhance navigation accuracy, but it also reduces pilot workload by automating certain flight operations, allowing for more focus on other critical aspects of flight management.

While a computer database can contribute to navigation by storing essential information, it does not encapsulate the full range of capabilities associated with an FMS, which actively manages and optimizes the flight path. An FMS goes beyond simple navigation assistance, incorporating various functionalities to provide comprehensive flight management in a single integrated system.