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32 Cards in this Set
- Front
- Back
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What is the Blue system pressure when supplied by the RAT? |
2500 PSI |
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How many pumps comprise the hydraulic system? |
2 engine driven pumps 2 AC pumps 1 hand pump 1 RAT |
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When is the Power Transfer Unit (PTU) inhibited ? |
During the first engine start 40 seconds after the end of cargo door operation |
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When does the PTU activate? |
Switch in auto and greater than 500 PSI difference between the yellow and green systems |
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What is the purpose of the 3 priority valves? |
Cut off heavy load users from the system when pressure in the system is low and the demand is high |
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Where are the hydraulic filters located? |
Each system Reservoir filling system Return lines Engine pumps Blue system electric pump Normal braking system |
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What pressurizes the hydraulic reservoirs? |
High pressure bleed air from engine 1. If the pressure drops below a given level, air is taken from the crossbreed duct. |
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Why is it necessary to maintain high pressure in the hydraulic reservoirs? |
To prevent the pumps from cavitating. |
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What system powers the normal brakes? |
Green |
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What system powers the Alternate brakes and parking brake? |
Yellow |
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What system powers the landing gear and NWS? |
Green |
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FAULT light on ENG PUMP push button and ECAM? |
Reservoir level low Reservoir overheat Reservoir air pressure low Pump delivery pressure low (inhibited on ground with engine off) |
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If the crew selects the ENG PUMP switch to off after a fault, when does the FAULT light continue to be illuminated? |
Overheat while temperature is still too high |
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When does the Blue electric hydraulic pump operate? |
Push button in auto: In flight On ground with one engine running or if the crew pressed the BLUE PUMP OVRD pushbutton |
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FAULT light on BLUE ELEC PUMP pushbutton and ECAM? |
Reservoir level low Reservoir overheat Reservoir air pressure low Pump delivery pressure low (inhibited engines off on ground) Pump overheats |
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If the crew selects the BLUE ELEC PUMP off after a fault, when does the fault light remain illuminated? |
An overheat, as long the temperature is still too high |
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What happens to the YELLOW ELEC PUMP if the electrical power supply is removed? |
The pump turns off and remains off even if electrical power is Re established |
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When the YELLOW ELEC PUMP pushbutton is off, when will the yellow electric pump come on automatically? |
When the cargo door manual selector valve is selected to OPEN or CLOSE. (Inhibits other yellow system components except alternate braking and eng 2 reverser) |
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FAULT light on YELLOW ELEC PUMP pushbutton and ECAM? |
Same as Blue system, except no engine inhibit. Reservoir level low Reservoir overheat Reservoir air pressure low Pump delivery pressure low Pump overheat
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What is the normal function of the PTU when the engines are shut down on the ground? |
Allows the green system to be pressurized by the yellow system |
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When is the PTU automatically tested? |
During the second engine start |
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What does a fault light on the PTU pushbutton and associated ECAM mean? |
Green or Yellow reservoir low fluid level Green or Yellow reservoir overheat Green or Yellow reservoir low air pressure |
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What it the purpose of the hydraulic filters on the engine pumps and blue electric pump? |
Permit maintenance to monitor engine wear by checking for metallic particles |
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Describe the BLUE PUMP OVRD switch on the Maintenance Panel |
ON- the blue electric pump is on if the ELEC PUMP pushbutton on the HYD panel is in auto |
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Describe the FIRE VALVE indications on the ECAM HYD page |
Cross line amber: valve fully closed In line green: valve not fully closed |
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What do the different RAT colors mean on the ECAM HYD page? |
White: RAT stowed Green: RAT not stowed Amber: Pressure for stowing the RAT has been applied, or the RAT pump is not available |
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When does ELEC on the ECAM HYD page turn from white to amber? |
If the associated power supply fails |
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Describe the Yellow system ELEC PUMP control indication on the ECAM HYD page. |
White: electric pump is off Green: electric pump is on Amber: electric pump is on and yellow system has low pressure |
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What is indicated by cross line amber for the ENG PUMP control on the ECAM HYD page? |
Pushbutton is off |
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When do the System label and System pressure indication become amber on the ECAM HYD page? |
System pressure below 1450 psi |
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What hydraulic memo messages can you see? |
RAT OUT: (green) RAT not fully stowed. (Amber) during flight phases 1 and 2 HYD PTU: (green) when PTU is running |
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When do the engine numbers on the ECAM HYD page turn amber? |
Respective engine N2 is below idle |
