Circling Approach

The circling approach is a commonly used technique in aviation that allows pilots to safely land on an airport runway that is not aligned with the aircraft’s approach path. This type of approach is often used when the runway is located in a challenging terrain or when the weather conditions make it difficult to approach the runway directly.

During a circling approach, the pilot first flies a standard instrument approach to the airport until he or she reaches a certain altitude and distance from the runway. Then, the pilot will initiate a turn towards the runway, circling around it until the aircraft is lined up with the runway and ready to land.

There are several factors that pilots must consider when executing a circling approach, including the aircraft’s speed, altitude, and position in relation to the runway. In addition, pilots must take into account any obstacles or other hazards that may be present in the area.

The Federal Aviation Administration (FAA) provides detailed guidance on the proper execution of circling approaches in the FAA’s Instrument Flying Handbook (IFH). The IFH outlines the procedures that pilots should follow when conducting a circling approach, including the appropriate speeds and altitudes to use during the maneuver.

Overall, the circling approach is an important technique that allows pilots to safely land on runways that would otherwise be inaccessible. By following proper procedures and guidelines, pilots can ensure that they are able to execute this maneuver safely and efficiently, even in challenging weather conditions or terrain.

Operational Risk

Circling approaches involve low-altitude visual maneuvering, often in close proximity to terrain and obstacles. Unlike straight-in approaches, they require continuous visual reference, precise aircraft control, and careful energy management during the maneuvering phase.

Due to these factors, circling approaches are considered more operationally demanding and carry a higher risk—particularly in terms of loss of control or spatial disorientation—compared to standard straight-in approaches.

ATC Role

Air Traffic Control plays a critical role in the safe execution of circling approaches. The process typically involves coordination between Approach (APP) and Tower (TWR) units. APP is responsible for sequencing inbound traffic, issuing the initial instrument approach clearance, and planning spacing to accommodate the additional maneuvering time required for circling. Once transferred, TWR provides the circling clearance, monitors the aircraft visually where possible, and ensures runway safety.

From a workload perspective, circling approaches increase complexity for both units. APP must anticipate longer track miles, variable flight paths, and potential go-arounds, while maintaining separation with other arriving and departing traffic. TWR, on the other hand, must manage aircraft operating outside standard straight-in patterns, often without precise predictability in positioning, and be prepared to respond quickly if the aircraft initiates a missed approach.

Additionally, ATC may impose restrictions on the direction or extent of circling (e.g., “circle north of the field”) based on terrain, obstacles, or traffic considerations. Continuous coordination between APP and TWR is therefore essential to maintain situational awareness, ensure separation, and support safe completion of the maneuver.

References and Further Reading Links:

• Federal Aviation Administration. (2019). Instrument Flying Handbook. Retrieved from https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/instrument_flying_handbook/
• Federal Aviation Administration. (2021). Pilot’s Handbook of Aeronautical Knowledge. Retrieved from https://www.faa.gov/regulations_policies/handbooks_manuals/aviation/phak/