Which application pattern helps to avoid flying through spray from a previous swath?

The racetrack pattern is designed to optimize aerial application by minimizing the risk of re-entering spray from previously treated areas. This pattern typically involves flying parallel to the field edges and making turns at the ends, resembling the shape of a racetrack. By systematically applying product in this manner, pilots can maintain a continuous and efficient flow, reducing overlap and ensuring that they do not inadvertently fly back through areas where spray has already been deposited. This approach not only enhances application efficiency but also helps to protect the environment and prevents double application of chemicals, which can lead to crop damage or off-target impacts.

In contrast, other patterns such as diagonal, circular, and grid may not effectively prevent re-flying across swaths already treated, especially if the turns made at the end of each pass bring the aircraft back into already sprayed zones. Thus, the racetrack pattern is the most effective choice for avoiding the potential issues associated with flying through previously applied spray.