Pest Control Aircraft Pilot Practice Test

In aerial spraying, what does a heavier spray pattern indicate in relation to propwash?

1. More pesticide is being wasted

2. It improves coverage efficiency

3. The propwash is causing uneven distribution

4. Less drift is occurring

The correct answer is: The propwash is causing uneven distribution

A heavier spray pattern in aerial spraying often indicates that the propwash from the aircraft's rotors or propellers is causing uneven distribution of the pesticide being applied. When the propwash interacts with the spray, it can disrupt how the pesticide is delivered to the target area. This can lead to certain areas receiving a heavier dose, while others may receive less, resulting in an uneven application across the intended treatment zone. Understanding the influence of propwash is crucial for pilots to adjust their spraying technique, ensuring that the pesticide is distributed evenly and effectively over the targeted area, maximizing efficacy while minimizing waste and environmental impact. Proper management of spray patterns can also reduce the potential for drift, contributing further to effective pest control.