What type of switch does the weight-on-wheel mechanism utilize?

The weight-on-wheel mechanism utilizes a pressure switch due to its design and operational requirements in aircraft systems. This mechanism is an essential component in determining whether the aircraft is on the ground or airborne. When the aircraft's weight is applied to the wheels, the pressure switch is engaged, signaling the aircraft's systems to adjust appropriately, such as activating the landing gear indications or enabling ground-specific systems.

The pressure switch is designed to respond to the weight exerted on it, making it particularly suited for this application. It provides a reliable method to detect the presence or absence of weight, thus allowing for clear and precise communication within the aircraft's systems. This capability is crucial for ensuring that the aircraft operates safely and accurately during different phases of flight and ground operation.

In contrast, mechanical switches, leaf switches, and micro switches operate differently and may not be able to detect the applied weight effectively or provide the specific functionalities needed for the weight-on-wheel mechanism.