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A380 > PRESSURISATION > Flashcards

PRESSURISATION Flashcards

1
Q

HOW DOES PRESS WORK

A

CABIN AIR PRESS REGULATION IS DONE VIA THE AUTO CONTROL OF THE OUTFLOW VALVES DURING ALL FLT PHASES

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2
Q

HOW MANY OUTFLOW VALVES

A

4 OUTFLOW VALVES

2 FWD 2 AFT

EACH OUTFLOW VLV DRIVEN BY SINGLE ELEC MOTOR

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3
Q

HOW MANY OUTFLOW VLV CONTROLLERS

A

4 OUTFLOW VLV CONTROLLERS

ONE FOR EACH OUTFLOW VLV

OPERATE IN AUTO MODE BACKUP OR MANUAL

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4
Q

OUTFLOW VLV CONTROLLER

AUTO MODE

A

ALL 4 AUTO MANAGE CABIN ALT AND CABIN V/S

IF AUTO MODE OF 3 FAIL 1 CAN STILL CONTROL ALL OUTFLOW VLV

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5
Q

OUTFLOW VLV CONTROLLERS RECEIVES DATA FROM

A 
AFDX NETWORK
FMS FLT PLAN
NAV SYS ADIRS
LDG GEAR
ENGINES
AIRCOND
DOORS
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6
Q

PSI FOR TAKEOFF AND CRZ

A

AUTO MODE

TAKEOFF 0.1 PSI

CRZ APPROX 8 PSI

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7
Q

AUTO OUTFLW VLV CTL

BEFORE TAKEOFF ROLL

A

ALL OUTFLW VLV OPEN TO MAKE SURE THAT THERE IS NO DIFFERENTIAL PRESS BETWEEN THE INSIDE AND OUTSIDE OF THE AIRCRAFT

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8
Q

AUTO CTL MODE OUTFLW VLV CNTRLR

DURING TAKEOFF ROLL

A

4 OUTFLW VLV CONTROLLERS PRESSURISE THE AIRCRAFT TO PROVIDE A SMOOTH VARIATION OF THE CABIN V/S AFTER LIFTOFF

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9
Q

DURING CLIMB IN NAV

A

CLIMB ALT PROFILE AND VS FUNCTION OF AIRCRAFT FLT PROFILE

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10
Q

DURING CLIMB HDG

A

CABIN ALT AND VS FUNCTION OF AIRCRAFT ALT AND VS

CABIN VS LIMITED 1000fpm

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11
Q

CRUISE CABIN ALT

A

APPROX < 7500’

DIFF PRESS 8 PSI

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12
Q

CABIN ALT FOR DES

A

CABIN VS CONTROLLED TO MAKE SURE THAT THE CABIN ALT REACHES AN ALT SLIGHTLY BELOW LDG FIELD ELEV PRIOR LDG

CABIN VS LIMITED -300fpm FOR DESCENT

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13
Q

AFTER LDG

WHAT HAPPENS OUTFLW VLV

A

ALL OUTFLOW VLV OPEN

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14
Q

IF ALL OUTFLW VLV CONTROLLERS FAIL

A

CAN BE OPERATED IN MANUAL MODE

FMS DATA IS LOST

USE CABIN PRESS INFO FROM ASSIGNED PRESS SENSORS AND EXTERNAL PRESS INFO

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15
Q

CABIN VS

MANUAL

A

ONLY USED SMOKE FUMES REMOVAL

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16
Q

CABIN ALT SEL

MANUAL MODE

A

HAS PRIORITY OVER SEL VS

WITH CABIN ALT MANUAL VS MUST BE AUTO UNLESS DUE ECAM

17
Q

CABIN ALT MANUAL ROC ROD

A

ROC 500fpm

ROD -300fpm

18
Q

DITCHING PBSW

A

CLOSES ALL VALVES BELOW FLOTATION LINE

19
Q

BOTH AUTO AND MANUAL FAILS FOR ONE OUTFLW VLV CTRLR

A

RELATED OUTFLW VLV AUTO CLOSES

NO OPERATIONAL IMPACT

20
Q

NEGATIVE PRESS RELIEF VLV

A

AFT PRESS BULKHEAD

OPERATE MECH TO PREVENT EXCESSIVE NEGATIVE DIFF PRESS

NOT SHOWN CAB PRESS SD

21
Q

CABIN AIR EXTRACT VLV

A

2 CABIN AIR EXTRACT VALVES AFT PRESS BULKHEAD

PNEUMATICALLY OPERATE TO PREVENT POSITIVE OR NEG PRESS

CAN BE MANUALLY OPENED FOR SMOKE FUMES

ONLY 1 SHOWN CAB PRESS SD

CAB AIR EXTRACT PBSW PART AIRCOND PANEL

22
Q

VENTILATION SYS FULLY AUTO FOR

A

AVIONICS BAY

COCKPIT AND CABIN ZONES

IFE BAY

FWD CARGO COMPT

PACK BAYS

BULK AND AFT CARGO COMPT

THS BAY (cooled by assigned and fully auto vent sys)

23
Q

VENTILATION CONTROLLERS

A

FWD AND AFT

2 IND CHANNELS

NOT SHOWN COND SD UNLESS FAULT

24
Q

VENT SYS AVIONICS

A

HAS ASSIGNED CONTROLLER

COOLS COCKPIT PANELS MAIN AND UPPER AVIONICS BAYS

2 AVIONICS VENT CCTS L AND R

25
Q

AVIONICS VENT SYS

ON GND

A

AVIONICS GND COOLING SYS COOLS THE AIR THAT IS BLOWN IN THE TWO VENT CCTS

NOT SHOWN COND SD UNLESS FAULT

26
Q

BLOWER FANS

A

TWO FANS BLOW RECIRC AIR FROM CABIN INTO VARIOUS PANELS AND EQUIP RACKS

EACH AVIONICS CCT HAS ITS OWN BLOWER FAN

BOTH BLOWER FANS AUTO ON WHEN AIRCRAFT ELEC POWERED

27
Q

AVIONICS EXTRACT FAN

A

A FAN EXTRACTS AIR FROM THE AVIONICS BAY AND COCKPIT PANELS THROUGH EITHER THE OVERBOARD VLV OR EXTRACT VLV FOR DISCHARGE OVERBOARD

FOR EG
AIR IS DISCHARGED THROUGH THE EXTRACT VLV AND THEN OVERBOARD THROUGH THE OUTFLW VLVS BY DIFF PRESS

EXTRACT FAN AUTO WHEN AIRCRAFT ELEC PWR

28
Q

BLOWING FANS NOT VENT CORRECTLY

A

BACKUP VLV OF AFFECTED CCT AUTO OPENS TO SUPPLY COLD AIR FROM AIRCOND SYS MIXER UNIT

29
Q

ON GND

ENGINES NOT RUNNING

A

OVERBOARD VLV FULLY OPEN

EXTRACT VLV CLOSED

30
Q

BOTH INNER ENGINES RUNNING

A

OVERBOARD VLV CLOSES

EXTRACT VLV OPENS

AIR DISCHARGED OVERBOARD THROUGH OUTFLW VLV BY DIFF PRESS

31
Q

OVRD CONFIG FOR EG SMOKE

A

OVERBOARD VLV PARTIALLY OPENS

EXTRACT VLV AUTO CLOSES

AIR EXTRACTED AND DISCHARGED THROUGH OVERBOARD VLV AND DIFF PRESS

32
Q

SOME AREAS

AFT AVIONICS
LAV GALLEY
STAIRCASES

VENTILATED

A

ON GND

TWO EXTRACT FANS THAT DRAW AIR AND DISCHARGE IT OVERBOARD THROUGH OUTFLW VALVES

IN FLT

BY DIFF PRESS THROUGH AIR OUTLETS

33
Q

VENT

IFE BAY

A

OWN BLOWER FAN

AUTO WHEN AC ELEC PWRED

AIR EXTRACTED AND DISCHARGED THROUGH OUTFLW VLV AND DIFF PRESS

IF BLOW FANS INSUFF OR FAILS A BACKUP VLV AUTO OPENS TO SUPPLY COLD AIR FROM AIRCOND MIXER UNIT

34
Q

VENT

PACK BAYS

A

BOTH VENT BY EXTERNAL AIR

ON GND

2 PNEUMATICALLY OPERATED BLOWING FANS
ONE PER PACK

BLEED AIR FROM ANY SOURCE FLOWS THROUGH 2 SUPPLY VALVES AND DRIVES BOTH FANS.

PACK CONTROLLER CONTROLS BLOWING FANS

IN FLT

BY EXTERNAL AIR FROM INLETS IN BELLY FAIRING

35
Q

VENT PANEL

COOLG

A

CONTROLS BOTH THE SUPPLEMENTAL COOLING SYS AND AVIONICS GROUND COOLING SYS

A380 (43 decks)

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