Hydraulics

Question 1

Pressure relief valve

Answer 1

3250-3500

Question 2

Hydraulic service system bay

Answer 2

A manual pressure release handle to release the pressurized fluid from the emergency accumulator back to the reservoir

A fluid quantity indicator which shows the level of hyd fluid in the power package reservoir

A ground hyd power, sampling, and servicing

Question 3

Hyd range

Answer 3

3000/120

2880-3120

Question 4

Hyd pump

Answer 4

Pressurizes the normal system and emergency accumulator

Through hyd fuse

One-way check valve

Question 5

Useful power

Answer 5

Exceeds 1800 psi

Question 6

Amber hyd fl lo

Answer 6

Reservoir level has dropped below approximately 1 quart

Question 7

Full AC

Answer 7

Fluid level is full and accumulator is charged

Question 8

AD DISCHARGE

Answer 8

The system must be serviced if the accumulator is fully discharged and the fluid level does not indicate FULL AD

Question 9

Hyd Sys

Answer 9

Cb for hydraulic system on the Bat Bus

If pulled, Hyd Fl LO sensor is not available but ehyd px lo sensor is available

Question 10

Power pack slide

Answer 10

Isolates the main hyd system from the emergency hyd system

Releases accumulator pressure for gear, flaps, and inboard gear doors

Question 11

Amber Ehyd Px Lo

Answer 11

Accumulator pressure drops below 2400/150

Question 12

Check valve

Answer 12

Prevents the emergency system from bleeding back into the main system of the main system fails

Question 13

Hyd fuse

Answer 13

Used to prevent a leak in the emergency system from depleting the main hyd system

Fluid flow to the emergency accumulator is restricted to a rate below.25 GPM

Question 14

Ehyd system leak

Answer 14

Leak exceeds .25 GPM
Limited to max of 20-30 cubic inches, 0.5 quart

Less than .25 GPM, depleted until Hyd Fl Lo, still sufficient to lower gear and flaps with main

Question 15

Landing gear system

Answer 15

Retractable tricycle system
4 actuators, each gear, each door
Outboard doors attached to the wheels

Question 16

Capacity

Answer 16

5 quarts

Question 17

Main gear/ doors

Answer 17

Electrical signal to inboard gear solenoid in hyd selector manifold to open both doors with single actuator

When both doors open a mechanical uplock disengages each main LDG gear

An electrical signal commands the landing gear down solenoid in the manifold to lower the main gear and unlock and lower the nose

When gears are down and locked, the electrical signal is removed and the doors close

Question 18

Nose gear/ doors

Answer 18

Electrical signal commands the nose gear hyd actuator

When the gear extends it allows the spring-loaded nose gear doors to open

A spring-strut braces the nose gear folding strut in the over-center position

Retraction, rollers on each side of the nose gear strut pull the nose gear doors up with gear

Question 19

Nws radius

Answer 19

160/ 80 either side

Question 20

Nws actuator

Answer 20

Automatically centers the nose wheel when the AC is in the air and not up

Question 21

Nws actuator assembly

Answer 21

Forward side of the nose gear strut

Selector valve
Servo valve
Rotary actuator

Also provides nws shimmy damping

Question 22

Nws selector valve

Answer 22

Solenoid which is electrically controlled by a switch located on each control stick

Question 23

Nws servo valve

Answer 23

Operated by a push-pull cable connected to the rudder pedals

Question 24

Nws fail

Answer 24

Failure of the nws system may prevent the pilot from changing nose wheel direction without disengaging the system.

If the nose wheel steering system fails to respond to pilot input, disengage nose wheel steering and use differential braking to maintain directional control while stopping the AC. Do not taxi with a known directional control problem

Question 25

Flap compoment

Answer 25

``` 2 flap selectors 2 selector valves for normal operation Emergency extension selector valve Flap actuator Flap torque tube Two flap position indicators Microswitches ```

Question 26

FLAP CONT

Answer 26

Bat bus | Electrical power for flap system

Question 27

Torque tube

Answer 27

When hyd power is applied to the actuator, the actuator rotates the torque tube and flap segments to the selected setting

Question 28

Flap indicator

Answer 28

As torque tube rotates, a cam on the torque tube activates position sensing microswitches

Question 29

Emergency flap extension

Answer 29

After emergency LDG gear extension handle is operated Emergency selector valve is solenoid operated and is located in the hyd power system emergency manifold Cannot be retracted

Question 30

PMU NORM AIRSTART 1W

Answer 30

Airstart attempts outside of the AIRSTART envelope may be unsuccessful or result in engine over temperature. Consideration should be given to ensure air starts are attempted within the AIRSTART envelope (125-200 kias for sea level to 15,000 ft, or 135-200 kias for 15,001 to 20,000 ft)

Question 31

PMU NORM AIRSTART 2W

Answer 31

Do not delay ejection while attempting AIRSTART at low altitude if below 2000 agl

Question 32

PMU NORM AIRSTART 3W

Answer 32

PCL must be in OFF to feather the propeller, and ensure proper starter, ignition, boost pump, and PMU operation during start

Question 33

PMU NORM AIRSTART 4C

Answer 33

Ensure PCL is in off, otherwise fuel may be prematurely introduced during start

Question 34

PMU NORM AIRSTART 5C

Answer 34

Continuous operation with the boost pump switch in the ON position will cause damage to the engine-driven low pressure fuel pump. Upon landing, notify maintenance of the duration of flight with boost pump switch in the ON position

Question 35

PMU NORM AIRSTART 6C

Answer 35

If N1 does not rise within 5 seconds, discontinue the airstart attempt and proceed to if AIRSTART is unsuccessful

Question 36

PMU NORM AIRSTART 7W

Answer 36

Movement of the PCL above idle before N1 stabilizes at ~67% will cause an increase in ff which may cause engine failure due to a severe ITT over temperature

Question 37

PMU NORM AIRSTART 8C

Answer 37

If there is no rise in ITT within 10 seconds after fuel flow indications, place the PCL to OFF and abort the start

Question 38

PMU NORM AIRSTART 9N

Answer 38

If generator will not reset, verify the starter switch is in Norm. The starter will drain battery power in 10 minutes if left in manual