Can holding patterns overlap?

Holding patterns are designed to provide a structured and safe method of controlling aircraft in a holding pattern, particularly in congested airspace or in situations where aircraft need to wait for clearance to proceed. It is essential that holding patterns do not overlap unless they are at different altitudes. This separation helps prevent conflicts between aircraft and enhances safety in busy airspaces.

When holding patterns are established, they are laid out with specific courses and can involve turns in a predictable and controlled manner. When patterns overlap at the same altitude, it can lead to potential collisions or confusion about which aircraft is in which pattern, especially in instrument meteorological conditions where visibility may be restricted.

By maintaining different altitudes for overlapping holding patterns, air traffic control can safely manage multiple aircraft without the risk of vertical or horizontal conflicts, allowing for efficient use of airspace. Hence, the requirement for different altitudes ensures that safety standards are upheld in air traffic management.