What is the greatest altitude restriction placed on flights regarding visual approaches?

The greatest altitude restriction placed on flights regarding visual approaches is indeed associated with being within 35 miles of the destination airport. This altitude restriction is crucial for ensuring safe and effective operations as aircraft enter the terminal airspace and prepare for landing under visual conditions.

The rationale behind this distance is primarily to facilitate safe spacing between aircraft, maintain controlled descent profiles, and allow pilots to adequately assess their surroundings, including weather conditions and potential obstacles. By having this restriction in place, it ensures that pilots are operating within a safe altitude range that allows for reactive maneuvers if necessary and aids in a smooth transition from the en route phase of flight to the landing phase.

Understanding this guideline is important for flight operations, as it emphasizes the need to maintain situational awareness and adhere to established protocols, ensuring safety and compliance with regulatory standards in aviation. Other distances, such as 20, 25, or 30 miles, do not align with the current regulations governing visual approaches, making them less applicable in this context.