Why is "Vref" crucial during landing approaches?

"Vref" is crucial during landing approaches because it signifies the reference landing speed necessary for a successful landing. This speed is particularly important as it ensures that the aircraft is operating within a safe margin above stall speed, providing enough lift and control during the critical phase of landing. By adhering to the Vref speed, pilots can achieve stable and controlled approaches to the runway, reducing the likelihood of accidents caused by excessive speed loss or unstable flight conditions.

In actual flight operations, Vref is calculated based on various factors, including aircraft weight and configuration, and it serves as a target that reflects the aircraft's performance capabilities in landing scenarios. Maintaining this speed allows pilots to execute a safe and effective touchdown while also supporting other aspects of landing management, such as flaps setting and thrust adjustments.