What happens to the brake pressure when hydraulic system failure occurs?

In the event of a hydraulic system failure, the brake accumulator plays a critical role in maintaining brake pressure. This component is designed to store hydraulic fluid under pressure, allowing pilots to retain some degree of braking capability even if the main hydraulic system is compromised.

When hydraulic pressure is lost, the accumulator supplies the necessary fluid to ensure that the brakes can still be applied effectively. This is essential for safe operation, as it helps enhance control during landings and prevent potential accidents that could arise from a complete loss of braking ability. Thus, the brake pressure is sustained by the brake accumulator, allowing the aircraft to have emergency stopping power despite the failure of the primary hydraulic systems. Understanding this mechanism is crucial for pilots and maintenance teams to ensure safety and effective response in emergency situations.