Copyright D.P. Browne 2011
Hydraulic System Overhead panel
Engine Pump Buttons ( guarded)
The control of the aircraft’s hydraulic system is via an Hydraulic panel in the overhead section of the cockpit.
Panel shown with guards. Open and lamps test on
Normal operation. The pump will pressurize the system when the engine is running
In/On
Pump is de-
Out/Off
Reservoir level low
Reservoir overheat
Reservoir low air pressure
Pump pressure low. (inhibited on ground, engine not running)
FAULT
Pump is not energized
Electric Pump Auto Buttons ( guarded)
Guarded button. Pressed in , the electrical pump will run, if the associated engine pump is off. The pump is not intended to replace the engine driven pump and can not be used for prolonged periods.
In
The electric pump can only be automatically run, ( Yellow and Green system only)
Out
Electric Pump Buttons
Electric pump is energized and available for pumping if needed
In/On
Pump is depressurized.
Out/Off
RAT Button, under red cover
The RAT may be deployed at anytime by selecting this button, once the guard is removed.
OFF
Pump is energized an running
ON
Reservoir level low
Reservoir overheat
Reservoir low air pressure
Pump pressure low. (inhibited on ground, engine not running)
FAULT
Pump is not energized
OFF
Note that the RAT may also be automatically deployed without the need to select this button.
when both engines have failed, or Green + Blue or Green + Yellow is showing Low Level.
Next
Previous
