What happens to the aircraft's pressurization control valve when the solenoid dump valve is activated?

When the solenoid dump valve is activated, the aircraft's pressurization control valve opens to release pressure. This process is crucial for managing the internal cabin pressure of the aircraft, especially during descent or in case of an emergency.

The activation of the solenoid dump valve signals the system to reduce pressure within the cabin, which is essential for maintaining safety and comfort for passengers and crew. By opening the pressurization control valve, excess cabin pressure is allowed to escape, thus ensuring that the cabin pressure is adjusted to appropriate levels as the aircraft transitions altitude.

In contrast, the other options deal with functions unrelated to the direct control of cabin pressure. Regulating fuel flow and sending power to the angle of attack (AOA) sensors are distinct systems within the aircraft that do not pertain to the operation of the pressurization system and its response to the solenoid dump valve activation.