B787 Hydraulic Systems

What are the components of the hydraulic power system?. Main hydraulic system. Ram air turbine (RAT) system. Hydraulic indicating system. Ground servicing system.

How many main hydraulic systems are there?. One. Two. Three. Four.

Which components are found in the left and right engine aft strut fairings?. Hydraulic reservoir. Electric motor pump (EMP). Filter modules (3). Engine supply shutoff valve (ESSOV).

What are the color codes used to identify the hydraulic systems?. Red for left, blue for center, green for right. Blue for left, green for center, red for right. Green for left, red for center, blue for right. Red for left, green for center, blue for right.

Which system powers the flight controls and on-side thrust reverser for the left and right hydraulic systems?. Primary pump (EDP) and demand pump (EMP). Electric motor pump (EMP). Hydraulic reservoir. Engine supply shutoff valve (ESSOV).

What powers the flight controls, high lift, landing gear, and nose wheel steering for the center hydraulic system?. Electric motor pumps (EMPs). Filter modules. Accumulator. Isolation valves.

What fluid is supplied by the left, center, and right hydraulic systems?. HyJet 5 fluid. Skydrol fluid. Hydraulic fluid. Jet fuel.

How many EMPs does the center hydraulic system have?. One. Two. Three. Four.

Where is the Ram Air Turbine (RAT) located?. Right aft wing to body fairing behind the right wheel well. Left aft wing to body fairing behind the left wheel well. Center wheel well. Nose wheel well.

Which system does the Ram Air Turbine (RAT) utilize fluid from to power selected flight controls?. Left. Right. Center. Ground servicing system.

What is the purpose of the hydraulic reservoirs?. Supply pressurized hydraulic fluid to the hydraulic pumps. Collect the return hydraulic fluid. Store excess hydraulic fluid. Generate hydraulic pressure.

Where is the EDP located?. Right side of the low pressure compressor case. Left side of the low pressure compressor case. Aft fuselage. Main landing gear bay.

When the accessory gearbox turns, the EDP turns. Variable speed but constant output ~5000 psi. Sends pressure to hydraulic components. Maintains reservoir pressure. Controls aircraft navigation.

There are four main hydraulic systems. True. False.

The left and right hydraulic system components are different. True. False.

The color coding for identifying the hydraulic systems is red for left, blue for center, and green for right. True. False.

The left and right hydraulic systems each consist of a reservoir and two pumps supplying 5000 psi fluid. True. False.

The center hydraulic system has two primary pumps (EDP) and one demand pump (EMP). True. False.

Which color indicates the left hydraulic system?. Blue. Green. Red. Yellow.

What type of fluid do the hydraulic systems supply?. HyJet 5. HyJet 4. HyJet 6. HyJet 3.

The primary pumps in the left and right hydraulic systems are. EDP primary, EMP demand. EMP primary, EDP demand. Both EDP. Both EMP.

Demand pumps operate when. More pressure is needed. Less pressure is needed. The system is idle. The system is overheating.

The RAT generator is capable of producing. 5 kVA at 220 VAC. 10 kVA at 235 VAC. 15 kVA at 250 VAC. 20 kVA at 300 VAC.

Hydraulic power becomes available for the RAT deployment in. 4 seconds. 6 seconds. 8 seconds. 10 seconds.

The RAT STOW SWITCH is located on the. P5 panel. P57 panel. P42 panel. P76 panel.

The RAT STOW SWITCH has how many positions?. 1. 2. 3. 4.

The RAT generator can provide. 8 kVA at 235 VAC. 10 kVA at 235 VAC. 12 kVA at 235 VAC. 6 kVA at 235 VAC.

What is the purpose of the Alternate extend isolation valve test?. Reset faults. Verify the pump depressurization function is working correctly. Check the deploy solenoids can be energized and able to deploy the RAT. Operation and indication of the valve.

What does the Nose landing gear isolation valve test focus on?. Reset faults. Operation and indication of the valve. Verify the pump depressurization function is working correctly. Check the deploy solenoids can be energized and able to deploy the RAT.

What is the aim of the Reserve steering isolation valve test?. Verify the pump depressurization function is working correctly. Check the deploy solenoids can be energized and able to deploy the RAT. Reset faults. Operation and indication of the valve.

During the Auto-bleed valve test, what is checked?. Operation and indication of the valve. Verify the pump depressurization function is working correctly. Reset faults. Check for air in the system, Reset the auto-bleed valve fault.

What is the purpose of the EDP depress valve test?. Reset faults. Verify the pump depressurization function is working correctly. Check the deploy solenoids can be energized and able to deploy the RAT. Operation and indication of the valve.

What does the RAT auto/manual deploy test verify?. Reset faults. Operation and indication of the valve. Check the deploy solenoids can be energized and able to deploy the RAT. Verify the pump depressurization function is working correctly.

What is tested during the RAT heater test?. Verify the pump depressurization function is working correctly. Reset faults. Check the deploy solenoids can be energized and able to deploy the RAT. Determines whether heater coils are properly installed and functional, Reset faults.