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Embraer E170/190 > AIR MANAGEMENT SYSTEM > Flashcards

AIR MANAGEMENT SYSTEM Flashcards

1
Q

What does Air Management System consist of?

A

1) The Pneumatic System

2) The Environmental Control System

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2
Q

PACK 1/2 PB?

A

PUSH IN: allows automatic operation of AMS, opens the respective pack flow control valve

PUSH OUT: manually closes the respective pack flow control valve

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3
Q

CKPT CONTROLLER
PAX CABIN CONTROLLER

A

Controls cockpit temperature

Controls cabin temperature (ATTND — allows temperature to be regulated from FA panel)

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4
Q

RECIRC BUTTON

A

PUSH IN: automatic operation by the AMS, turns on both fans according to system logic

PUSH OUT: turns off both recirculation fans

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5
Q

XBLEED BUTTON

A

PUSH IN: allows automatic operation, opens the CROSSBLEED VALVE according to the system logic

PUSH OUT: manually closes the CROSSBLEED VALVE

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6
Q

BLEED 1/2/APU BUTTON

A

PUSH IN: automatic operation by AMS, opens respective ENGINE BLEED VALVES

PUSH OUT: manually closes respective ENGINE BLEED VALVES

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7
Q

Amber stripped bar on BLEED-buttons

A

Leak detected

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8
Q

DUMP BUTTON

A

Provides rapid depressurisation, opens outflow valve, stops packs&recirculation fans

When in MAN MODE outflow valve will not open

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9
Q

CABIN ALT CONTROLLER [DOWN-STOP-UP]

A

DOWN — closes outflow valve
STOP — normal position
UP — opens outflow valve

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10
Q

PRES MODE SELECTOR [MAN-AUTO-LFE CONTROL]

A

MAN — manual control of outflow valve
AUTO — automatic control of outflow valve
LFE CONTROL — airfield elev input + AUTO

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11
Q

LFE CONTROLLER [DOWN-STOP-UP]

A

DOWN — decreases the LFE in 100 ft

STOP — normal position

UP — increases the LFE in 100 ft

Works only if PRES MODE SELECTOR is in “LFE CTRL” position

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12
Q

Which information does EICAS AMS contain?

A

1) CABIN ALTITUDE (feet) (GREEN/AMBER/RED/AMBER DASHED)

2) CABIN RATE OF CHANGE (FPM) (GREEN/AMBER/AMBER DASHED)

3) DIFFERENTIAL PRESSURE INDICATION (psi) (GREEN/AMBER/RED/AMBER DASHED)

4) LANDING FIELD ELEVATION (feet):
— GREEN — FMS
— CYAN with “M” — MANUAL
— AMBER DASHED

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13
Q

Sources of bleed air?

A

1) 1/2 ENGINE

2) APU

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14
Q

Bleed air consumers

A

1) Environmental Control System

2) Engine start

3) Engine/Wing anti-ice

4) Water pressurization

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15
Q

From what stages does the bleed air intake?

A

LOW PRESSURE — 6th
HIGH PRESSURE — 10th

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16
Q

What sources of bleed air can be used for anti-ice system operation IN FLIGHT?

A

Only ENGINE 1/2

17
Q

Priority of bleed air sources usage

A

1) onside engine

2) opposite engine

3) apu

18
Q

Air Conditioning Packs Valves should be closed if …?

A

1) Source is unavailable

2) Respective PACK button is OFF

3) Any engine is starting & ON GROUND

4) Respective engine is starting & NOT ON GROUND & opposite eng is not starting

5) Any engine is starting & APU is source

6) Respective system duct LEAK

7) Respective packs BIT shutdown failures are present (EICAS PACK 1/2 FAIL)

19
Q

AMS CONTROLLER functions

A

1) engine bleed

2) APU bleed

3) ECS packs

4) recirculation bay smoke detection

20
Q

Conditions for opening ENGINE BLEED VALVE

A

1) PUSHBUTTON BLEED 1/2 — AUTO

2) Bleed air is available

3) No fire

4) No leak

21
Q

Conditions for opening APU BLEED VALVE

A

1) APU BLEED PUSHBUTTON — ON

2) APU bleed is available

3) No leak (APU+1!!!!)

4) 1 BLEED is UNavailable

5) Anti-ice not requested
OR
Anti-ice requested and failed

22
Q

1(2) + APU — when APU will be prioritised

A

1) ON GROUND

2) GS < 50 kts

3) ALT < 15000 ft

4) Opposite engine bleed pressure is lower that minimal for start

5) APU bleed is available & WAI not requested

6) X-BLEED VALVE operating NORMALLY

23
Q

What does Cabin Pressure Control System consist of?

A

1) Controller

2) OFV

3) Negative pressure relief valve (NPRV)

4) Positive pressure relief valve (Safety valve)

5) Static pressure port

24
Q

Negative pressure relief valve — MIN dP?

A

-0.5 psi

25
Q

Positive pressure relief valve — MAX dP

A

+8.6 psi

26
Q

What parameters does CPCS use for modulating cabin pressure?

A

1) Landing Field Elevation

2) Cruise Altitude

3) Gross Weight

27
Q

FMS DATA AVAILABLE: sources of information?

A

1) LFE — DSTN ARP ELEV DATABASE

2) CRUISE ALT — PERF INIT

3) GROSS WEIGHT — PERF INIT

28
Q

When indicated cabin altitude can be below 0 ft AMSL?

A

CPCS in AUTO & ARP ELEV ~ 0

Also CLB & CRS below 18000 ft

29
Q

Two values of dP

A

<7.8 below 37000 ft

<8.4 higher 37000 ft

30
Q

If DUMP pushbutton is PUSHED IN

A

1) PACKS & FANS — OFF

2) CAB ALT ROC 2000 fpm until 12400

3) At CAB ALT => 12400 OFV — CLOSE

31
Q

MAN MODE — features

A

1) No AUTO depressurisation on ground

2) DUMP is unavailable

3) OFV position — by knob selector

4) CPCS controller — 2 channels in SBY, one for MAN operation

32
Q

CPCS modes

A

1) GROUND
2) TAXI
3) TAKEOFF
4) CLIMB
5) CRUISE
6) DESCENT
7) GROUND
8) ABORT

Embraer E170/190 (9 decks)

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