What is a major consideration when selecting an aerial checkpoint?

When selecting an aerial checkpoint, vertical development is a critical consideration because it refers to the terrain's features and elevation changes that can significantly impact flight operations. This includes understanding the height of buildings, trees, hills, and other obstacles that could affect both safety and navigation. Proper identification of vertical landmarks allows pilots to maintain safe clearances above ground level and navigate effectively, particularly in varied terrain where simple horizontal distance may not provide a complete picture.

Wind speed, while important for overall flight performance and safety, primarily affects aircraft handling during flight but is less directly related to the selection of waypoints. Aerial distance is relevant for planning routes but does not encompass the potential hazards presented by vertical features. Altitude variations also play a role in flight safety and operations, but they are part of a broader understanding of the topography and do not specifically focus on the physical structures or natural features at a checkpoint. Understanding the vertical development of an area helps ensure that aerial checkpoints provide adequate reference points that are both visible and safe during flight operations.