What is the standard angle of bank (AOB) used in holding pattern design criteria?

In the context of holding pattern design criteria, the standard angle of bank used is 25 degrees. This figure is established to ensure that aircraft can maintain a proper radius during turns while also providing adequate clearance from the holding fix, ensuring safe operations.

Using a 25-degree angle of bank allows a balance between maintaining a manageable workload for the pilot and ensuring efficient maneuvering capability. This angle is also consistent with the guidelines set by regulatory agencies to ensure safe and standardized flight operations.

While other angles of bank can be used, they are generally not recommended for standard holding patterns, as tighter angles could lead to increased workload and risk of altitude changes, while broader angles might cause the aircraft to fly outside the desired airspace. Therefore, 25 degrees is established as the optimal standard for holding patterns, facilitating safe navigation and operational efficiency.