What is the normal hydraulic reservoir quantity range?

The normal hydraulic reservoir quantity range is vital for ensuring that the hydraulic systems of the CRJ550 function properly. Maintaining an adequate level of hydraulic fluid is crucial for the operation of various systems, including the landing gear, brakes, and flight control surfaces.

The correct range of 45% to 85% indicates that the hydraulic reservoir should have enough fluid to perform its intended functions without the risk of running low, which could lead to system malfunctions or failures. Operating within this range helps ensure that the hydraulic pressure remains sufficient to effectively transmit power through the system, allowing for safe and reliable aircraft operations.

The other ranges do not provide the necessary safety margin. Levels that are too low may not support the hydraulic system adequately, while an overly full reservoir can lead to overflow or contamination risks. Therefore, the 45% to 85% range is established to maintain a balance that ensures optimal performance and safety.