Brainscape's Knowledge GenomeTM

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


See full index

Frontier Limitations > Air Conditioning Panel > Flashcards

Air Conditioning Panel Flashcards

1
Q

The pneumatic system is monitored and controlled by?

A

2 Bleed Monitoring Computers (BMC)

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

If one BMC fails, can the other take over?

A

Yes, they are interconnected. If BMC 1 fails:
APU and ENG 1 leak detection are not monitored
ECAM APU BLEED LEAK warning is lost

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

The PACK FLOW selector has LO, NORM, and HI positions (A319/320). What does this allow us to do?

A

Select pack flow rates representing LO 80%, NORM 100%, and HIGH 120% of NORM

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

What flow rate is automatically selected when APU bleed air is in use or during single pack operation?

A

Hi

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

When should the PACK FLOW selector not be in the normal position?

A

IF A/C 201-299, 301-399, AND 910-999 (A319/320):
LO:If the number of passengers is below 115.
NORM:For normal operating conditions.
HI: For abnormally hot and/or humid conditions.

IF A/C 701 – 799 (A321):
ON: For ECON flow if the number of passengers is below 140. OFF:For normal flow.

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

If the engine bleed air in-flight is too low what will occur?

A

Minimum idle engine speed is automatically increased to provide adequate bleed air pressure

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

What would cause an amber FAULT light to illuminate in the PACK 1 and/or Pack 2 pushbutton (OOD)?

A

Overheat - Pack outlet.
Overheat - Compressor outlet.
Disagreement - Switch position disagreement with pack flow control valve Note: FAULT light will be illuminated when no bleed air is supplied.

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

What does the amber FAULT light in the APU BLEED pushbutton indicate? STOP HERE

A

Bleed leak (APU bleed valve closes)

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

What causes the amber FAULT light on the ENG 1 BLEED and/or ENG 2 BLEED pushbutton (LOOSA)?

A

Leak.
Overpressure - Downstream of the bleed valve.
Overheat.
Start in process.
APU bleed valve open and engine bleed valve not closed

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

What are the two functions of the engine bleed valves?

A

To Act as:
Pressure regulation
Shut off valves

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

At what cabin differential pressure does the RAM AIR valve open?

A

ΔP less than 1 PSI

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

What logic controls the X-Bleed valve when the X-BLEED switch is in AUTO?

A

When APU bleed valve is OPEN, the X-Bleed valve is open When APU bleed valve is CLOSED, the X-Bleed valve is closed X-Bleed also CLOSES for wing, pylon, or APU duct leak (except during engine start)

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

What causes the Pack Flow Control valve to automatically close?

A 
Upstream  pressure  below  minimum.
Pack  overheat .
Engine  start  sequence.
Engine  FIRE  pushbutton  on  the  related  side  pressed.
DITCHING  pushbutton  is  selected
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What does an amber FAULT light in the HOT AIR pushbutton indicate?

A

Duct overheat - the Hot Air and Trim Air valves close automatically

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

How many Air Conditioning System Controllers are there?

A
  1. Each Air Conditioning System Controller has 2 lanes – (Active/Standby)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Describe how the Air Conditioning System Controllers regulate temperature?

A

Basic temperature regulation: Both packs produce the required outlet temperature determined by the lowest demanded zone temperature Optimized temperature regulation: Hot air is added to the individual zones by the trim air valves to maintain the desired zone temperatures

17
Q

What occurs when an active lane of an Air Conditioning System Controller fails?

A

The second lane takes over

18
Q

What occurs when both lanes of an Air Conditioning System Controller fails?

A

The related pack is lost. The hot air pressure regulating valve and associated trim air valve(s) close

19
Q

How does the Air Conditioning System Controller configure its associated pack ram air inlet flap for takeoff and landing to avoid the ingestion of foreign matter?

A

Takeoff: Pack Ram Air Inlet Flap closes when takeoff power is set and the main landing gear struts are compressed. Reopens after main landing gear strut extension Landing: Pack Ram Air Inlet Flap closes as soon as the main landing gear struts are compressed and speed ≥ 70 knots. Opens 20 seconds after speed < 70 knots

20
Q

If an air cycle machine (ACM) fails, what occurs?

A

The affected pack will operate as a heat exchanger

21
Q

What effect will the engine start sequence have on the pack flow control valves?

A

The pack flow control valve will close automatically

22
Q

After engine start with the APU BLEED pushbutton ON, what source is supplying bleed air to the packs?

A

APU Bleed

23
Q

When does the Lav/Galley Extract Fan operate?

A

Continuously when electrical power is available

Frontier Limitations (55 decks)

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