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E190 - System knowledge > E190 - Air management system > Flashcards

E190 - Air management system Flashcards

1
Q

The AMS has … channels. In case of a channel failure, all systems keep working normally.

A

Two.

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2
Q

If the bleed air button illuminates amber, it means:

A

A leak is detected.

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3
Q

If you press the DUMP switch:

A
  • Packs and recirculation fans are turned off.- Outflow valve is opened to maintain a cabin ROC of 2,000 fpm until a cabin altitude of 12,400 ft. Then the outflow valve is fully closed (cabin altitude still increases due to natural leak).
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4
Q

What happens if you press the DUMP switch a second time ? What happens if you press the DUMP switch if pressurization is set to MAN ?

A

All systems normal againNothing.

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5
Q

What is the meaning of the HI FIELD indication ?

A

Airports > 8,000 ft. The cabin altitude warning point is shifted above it’s original value of 9,700 ft, by +500 ft added to the elevation.

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6
Q

One of the bleed flow lines is amber. This means:

A

An overheat condition.

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7
Q

Engine bleed air temperature is regulated by:

A

The precooler and the FAMV (fan air modulating valve.

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8
Q

The EBV is commanded open when:

A
  • Engine bleed is available- Switch in AUTO- No fire or no duct leak.
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9
Q

What happens if an engine bleed duct overpressure, leak of fail condition is detected ?

A

The eng bleed is automatically shut down.

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10
Q

The ABV is commanded open when:

A
  • APU bleed is available- Switch in AUTO- L engine bleed is NOT available- A/I is NOT requested
  • No duct leak
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11
Q

The XBV is commanded open when:

A
  • No bleed source on the opposite side- X bleed starts (flight/ground)- No duct leak
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12
Q

Is the AUTO switching of bleed sources and crossbleed automatic for duct leaks ?

A

Yes.

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13
Q

What happens if the Xbleed valve fails open ?

A

EBV1 will be commanded closed if engine bleed 2 is available.

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14
Q

The ODS provide detection of … and … . Normally the sensors are in a … loop configuration.

A

leaks and overheatdual loop.

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15
Q

The engine is used, in auto configuration, as priority bleed source if:

A

ECS is selected on

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16
Q

The APU is used, in auto configuration, as priority bleed source, on the ground, if:

A
  • SETI- ECS is OFF and AI/I is OFF
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17
Q

Is it possible to have both the APU and the engines as bleed sources simultaneously ?

A

No.

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18
Q

In case of an ECS OFF T/O, at what point are the engine bleeds enabled again ?

A

At 500 ft.

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19
Q

In case of single pack operations, does the temperature selector associated with the disabled pack still have any effect ?

A

No.

20
Q

The gaspers receive air from:

A

The mixer, or the R recirculation fan when the gasper shutoff valve opens (if gasper air > 35° C).

21
Q

The recirculation fans are turned off when:

A
  • Both packs are OFF (or DUMP button)- Cabin warm-up with APU as bleed- Cargo fire- Smoke in recirculation bay
22
Q

The fwd and center e-bay are ventilated by … fans each.

The fans draw air from the … (fwd e-bay) or the … (center e-bay) and expel this air to the ….

A

ThreeCockpitRear cabinRecirculation bay.

23
Q

Are cooling fans installed in the aft e-bay ?

A

No

24
Q

Emergency ram air ventilation (valve) is open if:

A
  • Both ECS packs are off, and- < 25,000 ft
25
Q

What is the relation between the PACK and it’s flow control valve ?

A

If the FCV is closed, the PACK is OFF.

26
Q

An ECS pack is commanded OFF when:

A
  • Bleed air is not available, or- PACK is switched off, or- In-flight engine start using cross-bleed, or- Duct leak or failures
27
Q

Both ECS packs are commanded OFF for engine start when:

A

Engine start on the ground, orEngine start using the APU.

28
Q

The RAM air valve BIT occurs during:

A

First engine start. It commands PACK 1 off.

29
Q

The FADEC sends an ECS OFF (both packs off) signal during T/O when:Unless:

A
  • 1# failure, or- T/L are set to MAX, or- ECS OFF T/OUnless APU bleed is available !
30
Q

The FADEC sends an ECS OFF (both packs off) signal during GA when:

A
  • 1# failure, or- T/L are set to MAXUnless APU bleed is available !
31
Q

After a FADEC ECS OFF signal, the packs are recovered when :

A
  • At 500 ft (ECS OFF T/O, 2 engines), or- T/L reduction below TO/GA, or- Above 9,700 ft (1#), or- Above 15,000 ft (1#, HI FIELD, T/O)
32
Q

When is an airport considered high field ?

A

> 8,000 ft AGL

33
Q

The CPCS has … independent, automatic channels that alternate for every flight. Both channels provide a … backup.

A

twomanual.

34
Q

At which differential pressure does the positive/negative pressure relief valves open ?

A

Positive relief valve (safety valve): 8,6 psiNegative relief valve: -0,5 psi

35
Q

The safety valve works in combination with a … that senses the environmental pressure, that is electrically heated.

A

static pressure port.

36
Q

If the FMS cruise altitude is set < 37,000 ft the max differential pressure is:

A

7,8 psi.

37
Q

If the FMS cruise altitude is set > 37,000 ft, or the airplane is actually flying > 37,000 ft, the max differential pressure is:

A

8,4 psi.

38
Q

During CPCS ground mode:

A

Outflow valve is fully open.

39
Q

CPCS taxi mode is enabled when: The differential pressure will be:

A
  • The doors are closed, and- N2 > 60%

0,11 psi.

40
Q

CPCS T/O mode is enabled when: The differential pressure will be:

A

T/O thrust is set0,15 psi.

41
Q

CPCS climb mode is enabled when: The cabin rate will be:In case of a step climb:

A

Flight mode+750/-600 fpmFMS: The cabin altitude continues to increaseNon-FMS: cruise mode is activated.

42
Q

CPCS cruise mode is enabled when: The cabin rate will be:

A

Cruise altitude / straight level (non-FMS)+500/-300 fpm.

43
Q

The maximum cabin altitude is:

A

8,000 ft.

44
Q

CPCS descent mode is enabled when: The cabin rate will be:

A

Descent after cruise activation-200/-750 fpm.

45
Q

CPCS abort mode is enabled when: The cabin rate will be:

A
  • < 10,000 ft, or- < 5,000 ft of departure airport, and
  • airplane stops climb, and
  • cruise mode not activated.

E190 - System knowledge (14 decks)

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