What is the minimum obstacle clearance requirement for the primary area of the intermediate approach segment?

The minimum obstacle clearance requirement for the primary area of the intermediate approach segment is defined to ensure that aircraft have sufficient vertical space to safely navigate the approach without interference from obstacles. The correct answer states that the minimum clearance starts at 300 meters and reduces to 150 meters.

This requirement is based on the need for aircraft to maintain a safe distance from potential obstructions during the descent phase of an approach. The initial clearance of 300 meters allows for a buffer as the aircraft transitions from the en-route phase to the final approach, where terrain and obstacles may pose a greater risk. As the aircraft gets closer to the airport and descends further, the reduced clearance to 150 meters acknowledges that the immediate environment is more controlled and that pilots have better situational awareness about the surrounding area.

This requirement is particularly critical for ensuring safety in various terrain types and in different locations around the world, making it essential for pilots and air traffic controllers to adhere to these standards during operations. Understanding these minimum clearance specifications helps to enhance the safety margins in aviation operations, particularly during approach and landing procedures.