What is the required separation distance for large aircraft behind a heavy jet?

The correct required separation distance for large aircraft behind a heavy jet is 5 miles. This standard is established to ensure safe spacing between aircraft, particularly when considering wake turbulence. Heavy jets produce significant wake turbulence due to their size and weight, which can pose risks to following aircraft, especially smaller ones.

Maintaining a distance of 5 miles mitigates the effects of this wake, allowing sufficient time and space for larger aircraft to navigate safely. Following this guideline helps prevent incidents that could arise from wake turbulence encounters, which can lead to loss of control or unsafe flight conditions for the trailing aircraft. Adhering to this separation standard is crucial for maintaining safe operational practices in aviation.