Hydraulics

Question 1

The number 2 standby hydraulic pressure gauge displays what?

Answer 1

Number 2 SPU output pressure.

Question 2

What are the outboard roll spoilers powered by?

Answer 2

The number 2 hydraulic system

Question 3

The standby power units are powered by what?

Answer 3

115 V a.c.

Question 4

Does the engine Driven pump have a pressure gauge?

Answer 4

No

Question 5

Illumination of the number #2 SPU auxiliary power caution light indicates what?

Answer 5

The quality of power from one or more sources is unacceptable

Question 6

A fully charged emergency brake accumulator will allow approximately how many brake applications?

Answer 6

Eight

Question 7

What are the main wheel brakes powered by?

Answer 7

The number one hydraulic system

Question 8

What is the Rudder lower actuator powered by ?

Answer 8

The number one hydraulic system

Question 9

The emergency hydraulic system receives pressure for main landing extension from what?

Answer 9

Hand pump

Question 10

Power transfer unit operation as indicated by what?

Answer 10

By illumination of the PTU select switch light

Question 11

What is the wing flaps powered by?

Answer 11

Number one hydraulic system

Question 12

Which hydraulic system is the landing gear powered by?

Answer 12

Number two hydraulic system

Question 13

Illumination of the number one engine hydraulic pump caution light indicates what?

Answer 13

The output of the EDP is below 2000 PSI

Question 14

What is the nominal pressure of the main hydraulic system?

Answer 14

3000 PSI

Question 15

Minimum Dispatch of the number to hydraulic system Fluid quantity is what?

Answer 15

3.0 QTS

Question 16

Hydraulic quantity and pressure indicators are located where?

Answer 16

Copilots instrument panel

Question 17

The park brake pressure gauge displays what?

Answer 17

Pressure in the park brake accumulator

Question 18

The standby power units output a nominal psi of what?

Answer 18

2750 PSI

Question 19

The number 2 standby hydraulic pressure gauge displays what?

Answer 19

Number 2 SPU output pressure

Question 20

How many main hydraulic systems are there in the aircraft?

Answer 20

Two.

Question 21

The PTU operates automatically

in the event of a ?

Answer 21

No. 2 engine
failure when the landing gear is
selected up.
The PTU can also be manually
selected ON

Question 22

An engine driven pump operates
each system and is located on
the ?

Answer 22

the rear face of the propeller

reduction gearbox.

Question 23

If pressure in the system exceeds ?

Answer 23

3250 psi, a pressure relief valve
opens until pressure decreases
to 3150 psi.

Question 24

An electrically actuated shutoff
valve is installed in the delivery
line between the reservoir and
the engine driven pump.
Operation of the valve is
controlled by ?

Answer 24

PULL FUEL OFF handle on the
fire protection panel.
The shutoff valve is powered by
the hot battery bus. The handle is
pulled to energize the valve
closed in the event of an engine
failure, fire, or for maintenance

Question 25

Indication of the No.1 or No.2 hydraulic system fluid overtemperature is provided by ?

Answer 25

the associated HYD FLUID HOT | caution light.

Question 26

In the NORM position, the standby hydraulic pumps operate automatically when ?

Answer 26

automatically when the flaps are selected to greater than 0 degrees.

Question 27

``` The Alternate Rudder Power System, or ARPS, provides hydraulic power to the No 2 rudder actuator in the event that the No. 2 system loses fluid, or both hydraulic systems fail. This is accomplished by ? ```

Answer 27

the rearward location of the No. 2 Standby Power Unit (SPU) and a Rudder Shutoff Valve (RSV).

Question 28

The No. 2 standby pump will also be energised automatically in the following situations: ?

Answer 28

``` - The engine driven pump (EDP) low pressure switch senses less than 2000psi, and - A low pressure switch in the rudder shutoff valve sensing less than 20psi in the return line ```

Question 29

``` Due to its critical nature the #2 Standby pump has two sources of power. During normal operations the #2 SPU operates from the ? ```

Answer 29

Left AC bus, while the Right AC bus | supplies power as a backup.

Question 30

The PT provides hydraulic pressure to the entire #2 system At ?

Answer 30

at 2,700psi with a maximum flow | rate of 4.5 US gal per minute.

Question 31

The primary purpose of the PTU | is allow for ?

Answer 31

allow for prompt landing gear extension and retraction in the event of a No. 2 engine failure.

Question 32

The PTU activates automatically | in response to ?

Answer 32

the loss of No. 2 engine oil pressure, decreasing below 50 psi, and a landing gear up selection.

Question 33

The Emergency Hydraulic system | consists of ?

Answer 33

of a manually operated hand pump and independent reservoir.