What is the primary role of a flight engineer during flight operations?

The primary role of a flight engineer during flight operations is to operate and monitor aircraft systems. This responsibility is crucial as it ensures that all systems are functioning correctly throughout the flight, which contributes to the safe and efficient operation of the aircraft. Flight engineers are trained to understand the various aircraft systems, including propulsion, electrical, hydraulic, and environmental controls, allowing them to detect and respond to any irregularities or malfunctions promptly.

Monitoring fuel levels and consumption, while important, is a part of the broader task of managing aircraft systems and does not encompass the full scope of a flight engineer's duties. Performing pre-flight navigation checks is essential before departure, but it falls more within the realm of the pilot's responsibilities. Assisting the captain in decision making is also a part of the flight engineer's role, but the primary emphasis during flight is on the continuous operation and monitoring of the aircraft's systems to ensure safety and compliance with operational requirements.