What should a pilot consider first when assessing flight conditions for agricultural spraying?

When a pilot is preparing for agricultural spraying, the foremost consideration should be weather patterns. Weather has a significant impact on both the safety and effectiveness of aerial applications. Factors such as wind speed and direction, temperature inversions, humidity, and the likelihood of precipitation can all affect how the spray is distributed, the potential for drift, and the overall effectiveness of the treatment.

For instance, high winds can cause drift, where the pesticide is carried away from the intended target area, potentially harming adjacent crops or natural habitats and leading to ineffective applications. Similarly, temperature inversions can trap air pollutants near the ground, increasing drift risk. Additionally, knowing the expected weather conditions helps in planning the timing of the application to maximize absorption and minimize potential environmental impact.

While visible obstacles, fuel levels, and flight route are pertinent considerations, they take a backseat to the immediate and variable nature of the weather. If flight conditions are unsafe due to weather, the operation may need to be postponed or canceled, regardless of other logistical factors. Understanding weather conditions and patterns should always come first for ensuring a safe and successful flight operation in agricultural spraying.