What should be done immediately if the pilot notices a spray system malfunction during an aerial application?

When a pilot notices a spray system malfunction during an aerial application, the most appropriate action is to report the issue and land the aircraft at the nearest location. This response is critical for several reasons.

First, safety is the foremost priority in aerial applications. Continuing with a malfunctioning spray system could lead to ineffective application, potential crop damage, overspray onto unintended areas, or even accidents. Reporting the malfunction allows for a systematic response to the issue, facilitating an immediate and safe landing to address the problem before continuing operations.

Landing the aircraft also allows the pilot to evaluate the malfunction in a controlled environment where they can ensure the aircraft and its systems are functioning correctly before resuming work. This immediate action underscores the importance of adherence to safety protocols and regulatory standards in aerial application practice.

In contrast, other choices would not adequately address the risks involved with a spray system malfunction. Ignoring the problem or adjusting the application rate does not resolve the underlying issue and could lead to greater complications. Performing a quick check and assessing the situation, while somewhat proactive, might not be sufficient in an urgent scenario that demands immediate corrective action. Therefore, the best and most responsible course of action is to report the malfunction and land safely.