What Am I?
I prevent pump pulsations from reaching the tail servo
What is the Ripple Eliminator Accumulator?
The system that supplies the flying controls and nose wheel steering
What is the #3 hydraulic system?
These are displayed on the SPSD start up page
What are the system pressures and temperatures?
You will get this caution on the SPSD when the fluid level in the No2 IHPS has fallen to the LOW level
What is the HYD LOW 2 caution?
It shuts off the #2 hydraulic system supply to the tail rotor servo when the #2 IHPS is in an ALERT level
What does the tail solenoid shut off valve do?
You have to disconnect this from the relevant IHPS before connecting the hydraulic ground rig
What is the system return line?
When #3 IHPS is to be used to pressurize #1 hyds system, the pressure needs to be bled from the #1 system using the O/R #1 for this to operate
What is the Change Over Valve?
This caution illuminates when the auxiliary pump AC motor has overheated and the pump has been switched off
What is the AUX PUMP OFF cautions?
This IHPS is driven by the accessory gearbox
What is the #3 IHPS?
This allows return pressure back to the reservoir in the event of the return line being left disconnected and system is pressurized
What is a pressure relief valve?
HYD PRESS 1/2/3, HYD LOW 1/2/3, SERVO HYD ½, AUX PUMP HOT are examples of cautions and UTIL RECHARG, CHG /OV VLV1, CHG /OV VLV2, AUX PUMP ON are…..
What are advisory captions?
The TAIL VALVE and SERVO HYD 2 cautions are generated when this happens
What happens when the #2 IHPS reservoir falls to the alert level?
This protects the MGB should the #1 IHPS seize
What is a replaceable driveshaft?
This is inhibited when the fluid level in No1 IHPS falls to the LOW level
What is COSV 1?
Manual depressurization of this system is inhibited when the No1 IHPS has failed and the system has low pressure
What is the No2 system?
This causes the UTIL PRESS caution to come on
What happens when there is low pressure in the Emergency Accumulator?
These have by-pass valves that allow fluid to flow freely between sides to prevent hydraulic lock
What are the main rotor servos?
You can't do this when the fluid level in the No3 IHPS falls to the ALERT level
When can't you recharge the emergency accumulator?
HYD PRESS 1 caution and this advisory will be displayed on the SPSD after a changeover has happened and the No3 hydraulics are pressurizing the No1 system
What is the CHG/OV VLV 1 advisory?
If there is a failure of one or more servos in the #2 hyd system you will see this
When will the crew see a SERVO HYD 2 indication?