What does a "loss of separation" indicate in aviation?

A "loss of separation" in aviation refers to a situation where aircraft or vehicles are less than the prescribed distance apart, which can greatly increase the risk of a collision. Maintaining safe separation distances is crucial for air traffic safety, as it helps prevent accidents and ensures that each aircraft can operate without interference from others. When separation is compromised, it indicates that one or more aircraft are not adhering to the established safety standards.

This scenario often triggers immediate responses from air traffic controllers and pilots to rectify the situation, which may involve altering flight paths, adjusting altitudes, or implementing other maneuvers to restore adequate separation. Understanding this concept is vital for pilots and ground personnel as it directly relates to the overall safety and efficiency of air travel operations.