What is the standard operating procedure for the hydraulic system in the EJet?

The standard operating procedure for the hydraulic system in the EJet revolves around providing redundancy in case of failure. This is crucial for aircraft safety and operational integrity. In aviation, hydraulic systems are essential for controlling various flight operations, such as moving the flight control surfaces and extending/retracting landing gear.

Redundancy means that if one hydraulic system experiences a failure, another independent system can take over its functions, ensuring that the aircraft remains controllable and safe to operate. This design principle is fundamental in aerospace engineering as it helps maintain critical systems operational under adverse conditions.

The other options do not align with the primary function of the hydraulic system. Operating without electrical inputs would compromise functionality, as hydraulic systems often require electrical components to operate efficiently. The system does not only function during taxi operations; it is active throughout different phases of flight, especially during takeoffs and landings when control surfaces are most needed. Additionally, while hydraulic systems play a role in controlling certain aspects of the aircraft, they are not directly responsible for controlling cabin pressure, which is managed by the pressurization system.