Which hydraulic system is not used for flight control actuation on the ECAM display?

Which hydraulic system is not used for flight control actuation on the ECAM display?

• A. Orange system
• B. Green system
• C. Blue system
• D. Yellow system

Answer: (B)

The ECAM hydraulics display only shows which circuits actively drive the primary flight-control actuators. On the A320, those actuators are powered by two hydraulic systems in normal operation. The Green circuit, while vital to other aircraft functions, does not power the primary flight-control surfaces; it supports systems like nose‑wheel steering and certain landing-gear/door operations. Because Green does not feed the flight-control actuators, it isn’t shown as a flight-control actuation source on the ECAM page.

The ECAM hydraulics display only shows which circuits actively drive the primary flight-control actuators. On the A320, those actuators are powered by two hydraulic systems in normal operation. The Green circuit, while vital to other aircraft functions, does not power the primary flight-control surfaces; it supports systems like nose‑wheel steering and certain landing-gear/door operations. Because Green does not feed the flight-control actuators, it isn’t shown as a flight-control actuation source on the ECAM page.