What is a key feature of the fly-by-wire system utilized in many modern aircraft, including Airbus models?

The key feature of the fly-by-wire system utilized in many modern aircraft, including Airbus models, is digital signaling for improved response time. Fly-by-wire systems replace traditional mechanical flight controls with electronic controls that interpret the pilot's inputs via digital signals. This results in quicker and more precise responses to pilot commands, enhancing the overall handling characteristics and safety of the aircraft. The digital nature of these systems allows for advanced functionalities such as autothrottle and flight envelope protection, which would not be possible with purely mechanical systems.

By leveraging digital technology, fly-by-wire systems can process inputs rapidly and provide feedback to the pilot with minimal delay, significantly improving aircraft performance and responsiveness during flight maneuvers. This advancement is part of what makes modern aircraft more efficient and easier to control, especially in complex flying conditions.