Which of the following is NOT a feature of the Flight Management System?

The correct answer is the feature that is NOT part of the Flight Management System (FMS). A Flight Management System is primarily designed to assist pilots in navigating the aircraft and managing the performance of the flight, as well as optimizing routes.

Performance management involves monitoring and adjusting the aircraft's performance to ensure fuel efficiency and adherence to safety protocols. In-flight navigation automation is a key component of the FMS, enabling seamless navigation from departure to arrival by using various inputs, including waypoints, airways, and approaches. Route optimization helps in calculating the most efficient path for the flight, taking into account factors such as wind, air traffic, and other operational considerations.

Weather prediction, while crucial for flight safety and planning, typically falls outside the primary functions of the FMS. Instead, aircraft rely on separate weather systems and tools for accurate and timely weather information. Thus, the claim that weather prediction is not a function of the Flight Management System accurately identifies the outlier among the features listed.