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What does Spoiler bypass lever do?
What is indicated when Spoiler bypass is ON?
OFF?
System bypass?
- redirects hydraulic fluid for maintenance to work on spoilers.
- Normal Pressure.
- HYD PRESS LOW annunciator, and normal pressure.
- HYD PRESS LOW annunciator, and no pressure
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What is on the Left Hydraulic System?
What is on the Right Hydraulic System?
What is on Both?
- -Thrust Reverser, Inboard flight spoilers, Elevator.
- -Gear, Aft Stairs, Thrust reverser, Outboard flight spoilers, Rudder.
- -flaps, brakes, nose wheel steering, ground spoilers, slats.
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What is the min quantity of hydraulic fluid with flaps retracted and system pressurized both analog and digital?
5 qts.
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The Aux, transfer, and both Engine driven pumps must in what position during takeoff and landing?
ON/HI unless under MEL.
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How does the landing gear operate?
What system does it use?
Why is AUX PUMP in the right wheel well?
- mechanically actuated, hydraulically operated.
- Right hydraulic system.
- To aid with gear retraction
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How many accumulators are on the airplane?
Where are they located?
- Six.
- Brakes (2) if you lose hydralics 3-5 cycles.
- Elevator Augmentation(1) 2 Pushes
- Aft Stairs and Rudder share(1) lowers the stairs slower and prevents fluctuation from LG.
- Reverse Thrust(2) 1 extend / possible Retract.
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What systems are on the left hydraulic system?
- TIE
- Thrust Reverser (Left)
- Inboard Flight Spoilers
- Elevator Augmentation
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What is located on the Right Hydraulic System?
- GATOR
- Gear
- Aft Stairs
- Thrust Reverser (Right)
- Outboard Flight Spoilers
- Rudder
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What is controlled by both hydraulic systems?
- FANGS
- Flaps
- Anti-skid Brakes
- Nosewheel Steering
- Ground Spoilers
- Slats
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How can you measure the quantity of hydraulic fluid in the resevoir?
- Quantity gauges in the cockpit
- Sight gauges on the reservoir
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Where are the hydraulic resevoirs located?
Where is the hydraulic fire SOV located?
- in the respective wheel wells.
- between the resevoir and the engine driven pump.
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How is the hydraulic fire SOV actuated?
by the fire handles.
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Pressure range of hydraulic EDPs and AUX pumps in HI mode?
Pressure range of EDPs in LOW mode?
Pressure range of the Transfer PUMP?
- 3000 PSIs(2800-3100)
- 1500 PSIs(1300-1700)
- 2000-3100 PSI
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When do the pressure relief valves open?
3600 PSI
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What does the transfer pump do?
Transfers power from one system to the other in case of hydraulic pump failures.
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What does the amber light on the hydraulic quantity gauge indicate?
- Engines Running - quantity below 4 quarts
- Engines Shut Down - quantity below 8 quarts on the right system, or 7 quarts on the left system
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What does the transfer pump switch operate?
What happens when placing transfer switch to OFF?
- The two transfer pump valves, allowing pressure to transfer if one system loses pressure.
- Placing the switch off or loss of power on the R DC Bus will cause the valves to close.
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What does the AUX pump switch OVRD mode do?
Bypasses the overheat protection and powers the aux pump
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What is the purpose of the Spoiler Shutoff and System Depressurization Valves?
Used by MX to either isolate the inboard spoilers or depressurize the appropriate hydraulic system
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What are the cockpit indications if the Spoiler Shutoff and System Depressurization Valve is set to SPOILER OFF?
L/R HYD PRESS LOW annunciator illuminates.
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What are the cockpit indications if the Spoiler Shutoff and System Depressurization Valve is set to SYSTEM BYPASS?
L/R HYD PRESS LOW annunciator illuminates and the hydraulic pressure gauge will indicate near zero pressure
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If you lose electrical power, what will happen to the engine-driven pump?
What about Transfer Pumps?
- It will revert to HI and 3000 PSI
- Fail in last position.
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