Pest Control Aircraft Pilot Practice Test

What is one reason for an adequate vent in the aircraft pesticide tank?

1. To prevent leaks during flight

2. To allow for better pesticide mixing

3. To prevent a vacuum from altering the normal flow of liquid

4. To reduce the weight of the tank

The correct answer is: To prevent a vacuum from altering the normal flow of liquid

An adequate vent in the aircraft pesticide tank is essential to prevent a vacuum from forming, which can disrupt the normal flow of the liquid during application. When a liquid is pumped out of a closed system, it can create negative pressure inside the tank, leading to a vacuum. This vacuum can hinder the efficient flow of the pesticide, making it difficult for the distribution system to function correctly. By having a proper vent, air can enter the tank, equalizing the pressure and ensuring that the pesticide flows smoothly and consistently through the dispensing system. This is critical for maintaining the efficacy of the application and achieving uniform coverage over the targeted area.