Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

limitations and checkride Q's > #13 Hydraulics > Flashcards

#13 Hydraulics Flashcards

1
Q

How many hydraulic systems are there and what is the pressure?

A

Three independent 5000PSI systems
Left, Center, Right

AOM 13.20.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The hydraulic systems powers which systems?

A 
Flight Controls
Landing Gear
Leading Edge Slats
Nose Gear Steering
Thrust Reversers
Trailing edge flaps

AOM 13.20.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How are the hydraulic reservoirs pressurized?

A

Pump outlet pressure

AOM 13.20.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the difference between the Left and Right system?

A

The components they power

AOM 13.20.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does the left hydraulic system power?

A

Flight controls
The left engine thrust reverser

AOM 13.20.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What does the right hydraulic system power?

A

Flight controls
The right engine thrust reverser

AOM 13.20.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How are the left and right hydraulic system primary pumps powered?

A

Engine-driven

AOM 13.20.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How are the left and right hydraulic system demand pumps powered?

A

electric motor-driven

AOM 13.20.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What do demand pumps provide?

A

supplementary hydraulic power for periods of high system demand
backup hydraulic power source for engine-driven primary pumps.

AOM 13.20.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

How are the demand pumps controlled?

A

By the ELEC DEMAND L and R pump selectors

AOM 13.20.1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

When the ELEC DEMAND L and R selectors are ON, when does the demand pump run?

A

Continuously

AOM 13.20.2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

When the ELEC DEMAND L and R selectors are in AUTO position, what conditions to the the L and R demand pumps run?

A
  • system low pressure
  • on the ground, for the first three minutes after the second engine is started
  • from takeoff thrust set to flaps retracted
  • during descent and landing, from gear down or RA less than 1000 feet to groundspeed less than 40 knots
  • thrust reverser operation

AOM 13.20.2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What does the center hydraulic system power?

A 
Flight Controls 
Flaps
Slats
Spoiler (right and left wing)
Landing gear acuation 
Nose gear steering

AOM 13.20.2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does the ram air turbine (RAT) provide hydraulic power to?

A

Center hydraulic system primary flight controls

AOM 13.20.2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How many electric motor-driven pumps (EMP’s) provide hydraulic power sources for the center hydraulic system?

A

Two! C1 and C2

AOM 13.20.2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What do the C1 and C2 ELEC pump selectors control?

A

Center pump controls

AOM 13.20.2

17
Q

What do the two center pumps alternate between?

A

As a primary pump and a demand pump.

AOM 13.20.2

18
Q

When does the center primary pump operate?

A

Continuously after the second engine is started.

AOM 13.20.2

19
Q

When conditions does the center demand pump operate?

A

System low pressure
or
On the ground for the first three minutes after the second engine is started
or
From takeoff thrust until radio altitude exceeds 2000 feet
or
flaps or slats are in motion
or
during descent when gear lever is down and radio altitude is less than 2000 feet until groundspeed is less than 60 knots.

AOM 13.20.2

20
Q

What protection does the center hydraulic system have in the event of a leak?

A

Isolation functionality that ensures the crew can lower the landing gear and that the nose wheel steering is operational for landing, rollout and taxi.

AOM 13.20.3

21
Q

What does the Isolation function on the Center system use?

A

Nose gear Isolation Valve (NGIV)
Reserve steering Isolation Valve ( RSIV)
Alternate Extend Isolation Valve (AEIV)
Reservoir standpipe

AOM 13.20.3

22
Q

How does the crew control the isolation valve for lowering the landing gear?

A

You don’t. It is automatic.

AOM 13.20.3

23
Q

If a hydraulic pump is shed, where is this shown?

A

LOAD SHED is shown on the hydraulic synoptic next to the demand pump symbol.

AOM 13.20.3

24
Q

What hydraulic power does the RAT provide?

A

5000PSI to primary flight controls connected to the C hydraulic system

AOM 13.20.3

25
Q

At what altitudes does the RAT provide hydraulic power?

A

Throughout the flight envelope

AOM 13.20.3

26
Q

When does the RAT deploy with respect to hydraulics?

A

All three hydraulic system pressures are low

AOM 13.20.3

27
Q

How is the RAT deployed?

A

Spring-loaded actuator
It can not be stowed in flight once deployed

AOM 13.20.3

28
Q

SWITCHES:

Ram Air Turbine Unlocked (UNLKD) Light

A

The RAT is not in the stowed position

AOM 13.20.2

29
Q

SWITCHES:

Ram Air Turbine Pressure (PRESS) Light is illuminated (White)

A

The RAT is deployed
center system primary flight control hydraulic pressure is greater than 3000PSI

AOM 13.10.2

30
Q

SWITCHES:
Left/Right Engine (L/R ENG) PRIMARY Pump Switches
ON/OFF
FAULT

A

ON- the engine-driven hydraulic pump pressurizes the related left or right hydraulic system when engine starts

Off (ON not visible) - the engine-driven hydraulic pump is turned off and depressurized

FAULT illuminated (amber)

  • low primary pump pressure
  • excessive primary pump fluid temperature
  • pump selected OFF

AOM 13.10.2

31
Q

SWITCHES:
C1/C2 Electrical (C1/C2 ELEC) Pump Selectors
ON, AUTO and OFF

A

ON- The pump runs continuously
AUTO - Pumps alternate as a primary pump and a demand pump. The primary pump operates continuously and the demand pump operates during high system demand
OFF- The pump is Off

AOM 13.10.2

32
Q

SWITCHES:
C1 and C2 Pump FAULT Lights
Illuminated (Amber)

A

Low primary pump pressure
excessive primary pump fluid temperatures or
pump selected off

AOM 13.10.2

33
Q

SWITCHES:
DEMAND (L/R ELEC DEMAND) Pump Selectors
ON/AUTO/OFF

A

ON - The pump runs continuously
AUTO- The pump operates when system and/or primary pump(s) pressure is low, or when the control logic anticipates a large system demand
OFF - The pump is off

AOM 13.10.2

34
Q

SWITCHES:
Demand Pump FAULT Lights
Illuminated (amber)

A

low demand pump pressure
excessive demand pump fluid temperature
demand pump is selected OFF

AOM 13.20.2

35
Q

What is the normal hydraulic service level? What also indicates it needs to be refilled on the synoptic page?

A

1.00 on the synoptic page
RF in white. Inhibited during flight

AOM 13.20.2

36
Q

Which isolation valve is not shown on the hydraulic synoptic display?

A

Alternate Extend Isolation Valve.

AOM 13.10.4

37
Q

When is the system showing normal pressure (white) on the hydraulic synoptic page?

A

System pressure is 3000 psi or greater.

AOM 13.10.7

limitations and checkride Q's (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions