PRESSURISATION

Question 1

HOW DOES PRESS WORK

Answer 1

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

Question 2

HOW MANY OUTFLOW VALVES

Answer 2

4 OUTFLOW VALVES

2 FWD 2 AFT

EACH OUTFLOW VLV DRIVEN BY SINGLE ELEC MOTOR

Question 3

HOW MANY OUTFLOW VLV CONTROLLERS

Answer 3

4 OUTFLOW VLV CONTROLLERS

ONE FOR EACH OUTFLOW VLV

OPERATE IN AUTO MODE BACKUP OR MANUAL

Question 4

OUTFLOW VLV CONTROLLER

AUTO MODE

Answer 4

ALL 4 AUTO MANAGE CABIN ALT AND CABIN V/S

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

Question 5

OUTFLOW VLV CONTROLLERS RECEIVES DATA FROM

Answer 5

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

Question 6

PSI FOR TAKEOFF AND CRZ

Answer 6

AUTO MODE

TAKEOFF 0.1 PSI

CRZ APPROX 8 PSI

Question 7

AUTO OUTFLW VLV CTL

BEFORE TAKEOFF ROLL

Answer 7

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

Question 8

AUTO CTL MODE OUTFLW VLV CNTRLR

DURING TAKEOFF ROLL

Answer 8

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

Question 9

DURING CLIMB IN NAV

Answer 9

CLIMB ALT PROFILE AND VS FUNCTION OF AIRCRAFT FLT PROFILE

Question 10

DURING CLIMB HDG

Answer 10

CABIN ALT AND VS FUNCTION OF AIRCRAFT ALT AND VS

CABIN VS LIMITED 1000fpm

Question 11

CRUISE CABIN ALT

Answer 11

APPROX < 7500’

DIFF PRESS 8 PSI

Question 12

CABIN ALT FOR DES

Answer 12

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

Question 13

AFTER LDG

WHAT HAPPENS OUTFLW VLV

Answer 13

ALL OUTFLOW VLV OPEN

Question 14

IF ALL OUTFLW VLV CONTROLLERS FAIL

Answer 14

CAN BE OPERATED IN MANUAL MODE

FMS DATA IS LOST

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

Question 15

CABIN VS

MANUAL

Answer 15

ONLY USED SMOKE FUMES REMOVAL

Question 16

CABIN ALT SEL

MANUAL MODE

Answer 16

HAS PRIORITY OVER SEL VS

WITH CABIN ALT MANUAL VS MUST BE AUTO UNLESS DUE ECAM

Question 17

CABIN ALT MANUAL ROC ROD

Answer 17

ROC 500fpm

ROD -300fpm

Question 18

DITCHING PBSW

Answer 18

CLOSES ALL VALVES BELOW FLOTATION LINE

Question 19

BOTH AUTO AND MANUAL FAILS FOR ONE OUTFLW VLV CTRLR

Answer 19

RELATED OUTFLW VLV AUTO CLOSES

NO OPERATIONAL IMPACT

Question 20

NEGATIVE PRESS RELIEF VLV

Answer 20

AFT PRESS BULKHEAD

OPERATE MECH TO PREVENT EXCESSIVE NEGATIVE DIFF PRESS

NOT SHOWN CAB PRESS SD

Question 21

CABIN AIR EXTRACT VLV

Answer 21

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

Question 22

VENTILATION SYS FULLY AUTO FOR

Answer 22

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)

Question 23

VENTILATION CONTROLLERS

Answer 23

FWD AND AFT

2 IND CHANNELS

NOT SHOWN COND SD UNLESS FAULT

Question 24

VENT SYS AVIONICS

Answer 24

HAS ASSIGNED CONTROLLER

COOLS COCKPIT PANELS MAIN AND UPPER AVIONICS BAYS

2 AVIONICS VENT CCTS L AND R

Question 25

AVIONICS VENT SYS ON GND

Answer 25

AVIONICS GND COOLING SYS COOLS THE AIR THAT IS BLOWN IN THE TWO VENT CCTS NOT SHOWN COND SD UNLESS FAULT

Question 26

BLOWER FANS

Answer 26

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

Question 27

AVIONICS EXTRACT FAN

Answer 27

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

Question 28

BLOWING FANS NOT VENT CORRECTLY

Answer 28

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

Question 29

ON GND ENGINES NOT RUNNING

Answer 29

OVERBOARD VLV FULLY OPEN EXTRACT VLV CLOSED

Question 30

BOTH INNER ENGINES RUNNING

Answer 30

OVERBOARD VLV CLOSES EXTRACT VLV OPENS AIR DISCHARGED OVERBOARD THROUGH OUTFLW VLV BY DIFF PRESS

Question 31

OVRD CONFIG FOR EG SMOKE

Answer 31

OVERBOARD VLV PARTIALLY OPENS EXTRACT VLV AUTO CLOSES AIR EXTRACTED AND DISCHARGED THROUGH OVERBOARD VLV AND DIFF PRESS

Question 32

SOME AREAS AFT AVIONICS LAV GALLEY STAIRCASES VENTILATED

Answer 32

ON GND TWO EXTRACT FANS THAT DRAW AIR AND DISCHARGE IT OVERBOARD THROUGH OUTFLW VALVES IN FLT BY DIFF PRESS THROUGH AIR OUTLETS

Question 33

VENT IFE BAY

Answer 33

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

Question 34

VENT PACK BAYS

Answer 34

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

Question 35

VENT PANEL COOLG

Answer 35

CONTROLS BOTH THE SUPPLEMENTAL COOLING SYS AND AVIONICS GROUND COOLING SYS