Brainscape's Knowledge GenomeTM

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


See full index

UPS 747 > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

When do the hydraulic demand pumps operate?

A

Respective fuel control switch is in CUTOFF, respective engine pump output pressure is low

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

Where can hydraulic fluid quantity be checked

A

Status page

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

An amber Demand Pump low PRESS light on the hydraulic panel indicates what?

A

Demand pump operating and output pressure is low or demand pump selector positioned to OFF or AUX

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

What does an amber SYS FAULT light on the hydraulic panel indicate?

A

Low hydraulic reservoir quantity or low hydraulic system pressure

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

If the HYD PRESS DEM 4 EICAS advisory alert message on the Freighter illuminates shortly after engine 4 has been started what does that indicate?

A

The system 4 demand pump selector is positioned to AUX

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

In normal operations, why is hydraulic system 4 pressurized first?

A

To prevent transfer of fluid from hydraulic system 2 or 1 to hydraulic system 4

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

How are hydraulic demand pumps 1 and 4 powered?

A

Pneumatic

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

Which hydraulic system powers the right autopilot servo?

A

2

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

A magenta RF next to a hydraulic fluid quantity indicates what?

A

Can be observed on the Status Page or Hydraulic synoptic and indicates refill is required

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

How are hydraulic demand pumps 2 and 3 powered?

A

Electric

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

What do the magenta letters RF indicate on the hydraulic synoptic?

A

Refill of the respective hydraulic system is required

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

A magenta LO next to a hydraulic fluid quantity indicates what?

A

Can be observed on the Status Page or Hydraulic Synoptic and indicates low reservoir quantity

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

IF an engine fire switch is pulled, the related hydraulic fluid shutoff valve closes. What is the status of the related engine driven hydraulic pump and hydraulic demand pump?

A

EDP depressurizes and demand pump operates providing pressure to the system.

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

What hydraulic system powers the left autopilot servo?

A

3

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

Why are the hydraulic system reservoirs pressurized by the bleed air system?

A

To prevent pump cavitation and ensure positive flow during high demand conditions

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

The hydraulic SYS FAUL lights are flashing on and off, the >HYD QTY LOW X EICAS advisory messages are appearing and disappearing and the EICAS hydraulic quantity indications are decreasing and increasing. This would indicate what condition?

A

HYQUIM failure

17
Q

When will the AUX 4 hydraulic pump operate with the selector in AUX?

A

On the ground and engine driven pump 4 not pressurized

18
Q

NWS and body gear steering are powered by which hydraulic system?

A

1

19
Q

Assuming engine is running and EDP pressure is good, what condition would cause only hydraulic demand pumps 1 and 4 to run in the air with the selector in AUTO?

A

Flaps out of up

20
Q

Assuming engine is running and EDP pressure is good, what condition would cause only hydraulic demand pumps 1 and 4 to run on the ground with the selector in AUTO?

A

Flaps in transit

21
Q

With the selector in AUTO, any hydraulic demand pump will operate for either of two conditions. What are the two conditions?

A

Engine driven pump output pressure low or related fuel control switch is in cutoff

22
Q

What does hyd system 1 normally power?

A

Body gear, body gear and nose wheel steering, inboard trailing edge flaps, alternate brakes, primary flight controls

23
Q

Which system powers the center autopilot servo?

A

1

24
Q

What does the engine driven pump PRESS light indicate?

A

Low engine hydraulic pump output pressure

25
Q

Pulling and Engine Fire Switch does what?

A

Depressurizes the related EDP and closes the related hydraulic fluid shutoff valve

26
Q

What does hyd system 4 normally power?

A

Main wing gear, outboard trailing edge flaps, normal brakes, primary flight controls

27
Q

What does hyd system 2 normally power?

A

Alternate brakes, right stab trim, lower YD, elevator feel, primary flight controls

28
Q

What does hyd system 3 normally power?

A

Left stabilizer trim, upper YD, elevator feel, primary flight controls

29
Q

What does hydraulic demand pump low PRESS light indicate?

A

Demand pump operating and low output pressure or selector in OFF or AUX

30
Q

Which hydraulic system normally powers the autopilot?

A

2 power right, #3 powers left,

31
Q

An occurrence of any of one of three conditions in the hydraulic system would cause a hydraulic SYS FAULT light indication. What are the three conditions?

A

Low system pressure, low reservoir quantity, or excessive fluid temperature

32
Q

Wing gear extension and retraction are powered by which hydraulic system?

A

4

33
Q

Nose and body gear extension and retraction are powered by which hydraulic system?

A

1

UPS 747 (20 decks)

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