Which MAN ON pushbutton will deploy the RAT and activate the GCU for the Emergency Generator?

Which MAN ON pushbutton will deploy the RAT and activate the GCU for the Emergency Generator?

• A. Eng Elec panel
• B. EMER ELEC PWR panel
• C. Yellow Elec panel
• D. Blue Elec panel

Answer: (B)

The function being tested is how to bring emergency electrical power online when normal sources are unavailable. The pushbutton that deploys the Ram Air Turbine (RAT) and activates the Generator Control Unit (GCU) is located on the EMER ELEC PWR panel. Pressing this MAN ON pushbutton initiates RAT deployment and engages the GCU so the emergency generator can supply power to the essential electrical buses. This panel is dedicated to emergency electrical power, so it’s the correct control for manually initiating RAT deployment and generator start. The other panels shown pertain to normal or different electrical systems and do not control RAT deployment or GCU activation, so they won’t accomplish this function.

The function being tested is how to bring emergency electrical power online when normal sources are unavailable. The pushbutton that deploys the Ram Air Turbine (RAT) and activates the Generator Control Unit (GCU) is located on the EMER ELEC PWR panel. Pressing this MAN ON pushbutton initiates RAT deployment and engages the GCU so the emergency generator can supply power to the essential electrical buses. This panel is dedicated to emergency electrical power, so it’s the correct control for manually initiating RAT deployment and generator start.

The other panels shown pertain to normal or different electrical systems and do not control RAT deployment or GCU activation, so they won’t accomplish this function.