The normal 'A' hydraulic and 'B' hydraulic system contain the following pumps? 2 engine driven pumps powering system 'A' and 2 electric pumps powering system 'B' 2 electric pumps powering system 'A' and 2 engine driven pumps powering system 'B' c. 1 electric motor driven pump (EMDP), one engine driven pump (EDP) powering system 'A' and the same for system 'B'. .
6. The case drain filters for the electric motor driven pumps (EMDP) are positioned: a. On the 'A' pressure or 'B'pressure system modules. b. Below the related electric pumps. c. In the wing fillet area.
7. The standby system electric motor driven pump is located? a. On the keel beam area. b. In the aft wheel well wall. c. In the aft wing to body fairing R/H side. .
8. The hydraulic reservoir pressure relief valves operate to relieve excess pressure from either or both hydraulic reservoirs. This excess pressure is vented as follows? a. Locally in the main wheel well. b. Overboard through the APU (Auxiliary Power Unit) fuel line shroud drain mast. c. Into the pack valve.
9. The’ A’&‘B’ systems hydraulic pressure transmitters are? a. Mounted on main landing gear wheel well wall above Hydraulic pressure Modules’ A’&’ B’. b. Located on the pressure system modules‘A’&‘B’. c. Tapped into the return hydraulic modules A & B.
10. The PTU (power transfer unit) flow limiter will? a. Limit the supply of ‘A’ system fluid to the PTU motor. b. Limit the flow of fluid to the PTU motor which limits the speed of the motor. c. Shut off fluid to the motor of the PTU if it leaks.
11. The PTU (power transfer unit) will operate for which of the following conditions? a. Aircraft on the ground and flaps more than 15 units. b. Aircraft in the air, flaps between up and 15 units, system “B” EDP pressure below 2350psi. c. Pilot breaks lock wire on guarded switch on P5 and switch on PTU. .
12. How is the standby system reservoir pressurized? a. By RAM air pressure. b. Through the fill and balance line connected to system ‘B’ reservoir. c. By #1 engine EDP (Engine Driven Pump).
13. The hydraulic EMDP (Electric Motor Driven Pump) 'overheat' light on P5 will illuminate when? a. The fluid pressure coming from the respective pump is too low. b. When temp of fluid in the case drain line of the EMDP reaches 225°F or more. c. When the temperature of the EMDP motor exceeds 184°F.
14. The standby system provides alternate pressure to what systems? a. Only to system ‘A’ when #1 EDP (Engine Driven Pump) fails. b. Trailing edge flaps and Ailerons for roll control. c. To the rudder, leading edge devices and thrust reversers. .
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