ATA 21: Air Conditioning - Ventilation - Pressurisation - Pneumatics

Question 1

1. With engines and APU running and APU bleed valve selected ON, the engine bleed valves:

(a) Open, X BLEED valve opens, APU bleed valve closes
(b) Close, X BLEED valve opens, APU bleed valve opens
(c) Close, X BLEED valve closes, APU bleed valve opens

Answer 1

(b) Close, X BLEED valve opens, APU bleed valve opens

Question 2

With the PACK FLOW selector switch in NORM, opening of the APU bleed valve will
cause both the flow control valves to regulate in the:

(a) High flow mode
(b) Low flow mode
(c) Normal flow mode

Answer 2

(a) High flow mode

Question 3

The amber FAULT light illuminates in the HOT AIR push button switch as a result:

(a) The hot air and trim valves run close
(b) Both pack valves close
(c) The turbine by-pass valve runs close

Answer 3

(a) The hot air and trim valves run close

Question 4

Which of the following computers controls the cabin and cockpit conditioned air?

(a) One zone controller that passes information and instructions to two pack controllers for four zones
(b) Three zone controllers that pass information and instructions to two pack controllers for four zones
(c) Two pack controllers that pass information and requests to three zone controllers

Answer 4

(a) One zone controller that passes information and instructions to two pack controllers for four zones

Question 5

When a temperature selector rotary knob is adjusted:

(a) Its associated trim air valve always moves to a different position
(b) No relationship exists between a temperature selector knob and the trim air valve
(c) A signal is sent to the zone controller requesting a different temperature and adjusts trim air valves accordingly

Answer 5

(c) A signal is sent to the zone controller requesting a different temperature and adjusts trim air valves accordingly

Question 6

Pressurization indications may be found on which ECAM page/s:

(a) The in-flight ECAM cruise page, the cab press page and the door/oxy page
(b) Only on the cab press page
(c) Only on the bleed page

Answer 6

(a) The in-flight ECAM cruise page, the cab press page and the door/oxy page

Question 7

The Ram Air Inlet valve is controlled…

(a) Automatically by the pack controller
(b) By the RAM AIR pushbutton
(c) By the Ditching pushbutton

Answer 7

(a) Automatically by the pack controller

Question 8

Pressurization indications may be found on which ECAM page/s:

(a) The in-flight ECAM cruise page, the cab press page and the door/oxy page
(b) Only on the cab press page
(c) Only on the bleed page

Answer 8

(a) The in-flight ECAM cruise page, the cab press page and the door/oxy page

Question 9

To change to the maximum descent cabin rate of 400 feet per minute you would….

(a) Go to the DES page and enter -400 in the DES CABIN RATE field
(b) Select it manually on the overhead panel
(c) Enter 400 in the DES CABIN RATE field on the CRZ page

Answer 9

(c) Enter 400 in the DES CABIN RATE field on the CRZ page

Question 10

AIR_1
Understand the control functions and indications on the AIR panel.
1. RAM AIR pb

Selected ON (guard lifted) - The ram air inlet opens if differential pressure is less than ____ psi and the _______ pb is not selected ON.

VOL. II, 21.4.5

Answer 10

AIR_1
Understand the control functions and indications on the AIR panel.

1. RAM AIR pb

Selected ON (guard lifted) - The ram air inlet opens if differential pressure is less than 1.0 psi and the DITCHING pb is not selected ON.

VOL. II, 21.4.5

Question 11

AIR_1
Understand the control functions and indications on the AIR panel.

2. PACK 1(2) pbs

• On (lights out) - The respective pack operates _________.
• Selected OFF - The respective pack flow control valve ______.
• FAULT - Illuminates amber if the valve position ________ with the selected position or if a pack _____ occurs.
  
  • The respective pack flow control valve closes _________.
  • It does not illuminate when the valve _______ under normal conditions (e.g., engine start).

VOL. II, 21.4.5

Answer 11

AIR_1
Understand the control functions and indications on the AIR panel.

2. PACK 1(2) pbs

• On (lights out) - The respective pack operates normally.
• Selected OFF - The respective pack flow control valve closes.
• FAULT - Illuminates amber if the valve position disagrees with the selected position or if a pack fault occurs.
  
  • The respective pack flow control valve closes automatically.
  • It does not illuminate when the valve closes under normal conditions (e.g., engine start).

VOL. II, 21.4.5

Question 12

AIR_1
Understand the control functions and indications on the AIR panel.

3. PACK FLOW Selector

• Used to exercise _______ control over pack _______ by requesting the desired flow via the _______ controller.
• Regardless of switch position, the zone controller commands high flow when the _______ is supplying bleed air or only one _______ is operating.

VOL. II, 21.4.5

Answer 12

AIR_1
Understand the control functions and indications on the AIR panel.

3. PACK FLOW Selector

• Used to exercise limited control over pack flow by requesting the desired flow via the zone controller.
• Regardless of switch position, the zone controller commands high flow when the APU is supplying bleed air or only one pack is operating.

VOL. II, 21.4.5

Question 13

AIR_1
Understand the control functions and indications on the AIR panel.

4. COCKPIT and CABIN Temperature Selectors

• Used to select the desired temperature in each ____.
• The positions of the temperature selectors on the AIR panel correspond with the following temperatures:
  
  • COLD - [____°F]
  • 12 o’clock - [____°F]
  • HOT - [____°F]

Note: The cabin temp selector sets a reference temperature from which individual cabin zone temperatures are adjusted on the forward attendant’s panel.

VOL. II, 21.4.5

Answer 13

AIR_1
Understand the control functions and indications on the AIR panel.

4. COCKPIT and CABIN Temperature Selectors

• Used to select the desired temperature in each zone.
• The positions of the temperature selectors on the AIR panel correspond with the following temperatures:
  
  • COLD - [64°F]
  • 12 o’clock - [76°F]
  • HOT - [86°F]

Note: The cabin temp selector sets a reference temperature from which individual cabin zone temperatures are adjusted on the forward attendant’s panel.

VOL. II, 21.4.5

Question 14

AIR_1
Understand the control functions and indications on the AIR panel.

5. HOT AIR 1(2) Pbs

• On (lights out) - The hot air valves operate _______.
• OFF - The respective hot air valve _______.
• FAULT - Illuminates amber if the duct temperature _______ predetermined temperature.
  
  • The respective _______ air valve closes.
  • The FAULT light _______ if the pb is selected OFF and the _______ condition no longer exists.

VOL. II, 21.4.5

Answer 14

AIR_1
Understand the control functions and indications on the AIR panel.

5. HOT AIR 1(2) Pbs

• On (lights out) - The hot air valves operate normally.
• OFF - The respective hot air valve closes.
• FAULT - Illuminates amber if the duct temperature exceeds predetermined temperature.
  
  • The respective hot air valve closes.
  • The FAULT light extinguishes if the pb is selected OFF and the overheat condition no longer exists.

VOL. II, 21.4.5

Question 15

AIR_1
Understand the control functions and indications on the AIR panel.

6. ENG 1(2) Bleed Pbs

• On (lights out) - The respective engine bleed valve operates _______.
• OFF - The engine bleed valve and _______ valve _______.
• FAULT - Illuminates amber if any of the following occur:
  
  • The bleed valve is not _______ during engine start or when the _______ bleed valve is open.
  • An _______ is detected.
  • An _______ is detected.
  • A _______ leak is detected.
  • The FAULT light _______ when the pb is selected OFF, provided the _______ condition no longer exists.

VOL. II, 21.4.5

Answer 15

AIR_1
Understand the control functions and indications on the AIR panel.

6. ENG 1(2) Bleed Pbs

• On (lights out) - The respective engine bleed valve operates normally.
• OFF - The engine bleed valve and HP valve close.
• FAULT - Illuminates amber if any of the following occur:
  
  • The bleed valve is not closed during engine start or when the APU bleed valve is open.
  • An overpressure is detected.
  • An overheat is detected.
  • A bleed leak is detected.
  • The FAULT light extinguishes when the pb is selected OFF, provided the failure condition no longer exists.

VOL. II, 21.4.5

Question 16

AIR_1
Understand the control functions and indications on the AIR panel.

7. APU Bleed Pb

ON -

• The engine bleed and HP valves ________.
• The crossbleed valve ________ if the crossbleed selector is in the ________ position.
• The air conditioning packs go to ________ flow.
• The APU Bleed valve opens if:
  
  • APU N speed is greater than [_______%_],
    
    • altitude is less than _______ ft_. (climbing) or _______ft_. (descending),
    • and no leak is detected in the ________ or ________ side of the bleed system.

Off (lights out) - The APU bleed valve ________.

FAULT - Illuminates amber if an APU bleed ________ is detected. The bleed valve closes ______________.

VOL. II, 21.4.5

Answer 16

AIR_1
Understand the control functions and indications on the AIR panel.

7. APU Bleed Pb

ON -

• The engine bleed and HP valves close.
• The crossbleed valve opens if the crossbleed selector is in the AUTO position.
• The air conditioning packs go to high flow.
• The APU Bleed valve opens if:
  
  • APU N speed is greater than [95%],
    
    • altitude is less than 25,000 ft. (climbing) or 23,000 ft. (descending),
    • and no leak is detected in the APU or left side of the bleed system.

Off (lights out) - The APU bleed valve closes.

FAULT - Illuminates amber if an APU bleed leak is detected. The bleed valve closes automatically.

VOL. II, 21.4.5

Question 17

AIR_1
Understand the control functions and indications on the AIR panel.

8. Crossbleed Selector

• AUTO - The valve is normally _______ and _______ if the APU bleed valve is open.
  
  • The crossbleed valve opens after a [_______] second delay.
  • The valve _________ automatically if either BMC (Bleed Monitoring Computer) detects a bleed _______, unless an engine start is in progress.
• OPEN - _______ the automatic operation of the valve and manually _______ the valve.
• CLOSE - _______ the automatic operation of the valve and manually _______ the valve.

VOL. II, 21.4.5

Answer 17

AIR_1
Understand the control functions and indications on the AIR panel.

8. Crossbleed Selector

• AUTO - The valve is normally closed and opens if the APU bleed valve is open.
  
  • The crossbleed valve opens after a [10] second delay.
  • The valve closes automatically if either BMC detects a bleed leak, unless an engine start is in progress.
• OPEN - Overrides the automatic operation of the valve and manually opens the valve.
• CLOSE - Overrides the automatic operation of the valve and manually closes the valve.

VOL. II, 21.4.5

Question 18

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

1. Zone Temperatures
Displays the ________ temperature in each zone of the cabin.

V2 21.4.3

Answer 18

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

1. Zone Temperatures
Displays the actual temperature in each zone of the cabin.

V2 21.4.3

Question 19

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

2. Zone Duct Temperatures
Displays the temperature of air in the ________ duct for each cabin zone.

Normally green, becomes amber above __________ temperature.

V2 21.4.3

Answer 19

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

2. Zone Duct Temperatures
Displays the temperature of air in the supply duct for each cabin zone.

Normally green, becomes amber above predetermined temperature.

V2 21.4.3

Question 20

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

3. Trim Air Valves
Displays the positions of the trim air valves.
• Green - _________
• Amber – Valve ______

V2 21.4.3

Answer 20

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

3. Trim Air Valves
Displays the positions of the trim air valves.
• Green - Normal
• Amber – Valve failure

V2 21.4.3

Question 21

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

4. Hot Air Cross Valve
Displays the _________ of the hot air cross valve.

Valve opens automatically when one HOT AIR supply has _________.

Normally _____-line_ green, the valve position can also be displayed:

• In-line green if the valve is _________ under normal conditions (not fully _________).
• Cross-line or in-line amber if there is a _________ between the valve and the _________ position.

V2 21.4.3

Answer 21

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

4. Hot Air Cross Valve
Displays the position of the hot air cross valve.

Valve opens automatically when one HOT AIR supply has failed.

Normally cross-line green, the valve position can also be displayed:

• In-line green if the valve is open under normal conditions (not fully closed).
• Cross-line or in-line amber if there is a disagreement between the valve and the commanded position.

V2 21.4.3

Question 22

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

5. Hot Air Valves
Displays the ___________ of the hot air valves.

• ______-line green if the valve is open under normal conditions (not fully ___________ ).
• _______-line green if the valve is closed under normal conditions.
• ______-line or ___\_-line amber if there is a ____________ between the pb selection and the ___________ position.

V2 21.4.3

Answer 22

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

5. Hot Air Valves
Displays the position of the hot air valves.

• In-line green if the valve is open under normal conditions (not fully closed).
• Cross-line green if the valve is closed under normal conditions.
• Cross-line or in-line amber if there is a disagreement between the pb selection and the valve position.

V2 21.4.3

Question 23

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

6. HOT AIR Label
Normally green, becomes amber if the respective pack flow ______\_ valve is closed.

V2 21.4.3

Answer 23

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

6. HOT AIR Label
Normally green, becomes amber if the respective pack flow control valve is closed.

V2 21.4.3

Question 24

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

7. Forward Cargo Cold Air Valve
Displays the position of the forward cargo cold air valve. The valve is displayed:

• In-line green - Fully ________
• In-line amber - Failed ________
• Slant-line green - ________ open
• Slant-line amber - __ __________ or failed ________open
• Cross-line green - ________ closed
• Cross-line amber -________ closed
• Cross-line amber, and line indication also amber - At least one pack ________

V2 21.4.3

Answer 24

AIR_3
Discuss normal and abnormal indications on the ECAM COND page.

7. Forward Cargo Cold Air Valve
Displays the position of the forward cargo cold air valve. The valve is displayed:

• In-line green - Fully open
• In-line amber - Failed open
• Slant-line green - Partially open
• Slant-line amber - In transit or failed partially open
• Cross-line green - Fully closed
• Cross-line amber - Failed closed
• Cross-line amber, and line indication also amber - At least one pack off

V2 21.4.3

Question 25

AIR\_3 Discuss normal and abnormal indications on the ECAM COND page. **8. Bulk Cargo Heater Status** Normally green, becomes amber if the _**\_\_\_\_\_\_**_ fails. The _**\_\_\_\_\_\_**_ varies between C (cold) and H (hot) with heater output which varies depending on the compartment _**\_\_\_\_\_\_**_ and the _**\_\_\_\_\_\_**_ temperature. V2 21.4.3

Answer 25

AIR\_3 Discuss normal and abnormal indications on the ECAM COND page. **8. Bulk Cargo Heater Status** Normally green, becomes amber if the **_heater_** fails. The **_arrow_** varies between C (cold) and H (hot) with heater output which varies depending on the compartment **_temperature_** and the **_selected_** temperature. V2 21.4.3

Question 26

AIR\_3 Discuss normal and abnormal indications on the ECAM COND page. **9. Cabin Fan Indications** FAN is displayed in amber on the _**\_\_\_\_\_\_**_ page if a cabin fan _**\_\_\_\_\_**_ or is selected OFF. V2 21.4.3

Answer 26

AIR\_3 Discuss normal and abnormal indications on the ECAM COND page. **9. Cabin Fan Indications** FAN is displayed in amber on the **_COND_** page if a cabin fan **_fails_** or is selected OFF. V2 21.4.3

Question 27

AIR\_4 Describe the function of the **Hot Air system**. To maintain the selected zone temperatures, the zone controller: * Adds hot air, via the _**\_\_\_\_\_**_ air valves, to the cool air supplied to the zones by the _**\_\_\_\_\_\_\_**_ unit. * Hot air is only added to the zones that require air _**\_\_\_\_\_\_\_**_ than that supplied by the _**\_\_\_\_\_\_\_**_ unit. VOL. II, 21.2.3.5

Answer 27

AIR\_4 Describe the function of the **Hot Air system**. To maintain the selected zone temperatures, the zone controller: * Adds hot air, via the **_trim_** air valves, to the cool air supplied to the zones by the **_mixing_** unit. * Hot air is only added to the zones that require air **_warmer_** than that supplied by the **_mixing_** unit. VOL. II, 21.2.3.5

Question 28

AIR\_5 Recall the effect of a zone controller failure on the remainder of the air conditioning system. **If both channels of the zone controller fail**: * The pack controllers control temperature at a fixed output of [_**\_\_\_\_\_**_°F]. * **\_\_\_\_\_** _**\_\_\_\_\_**_ and **\_\_\_\_\_** _**\_\_\_\_\_**_ panel control of temperature and zone temperature regulation is no longer possible. * PACK FLOW selector is _**\_\_\_\_\_\_\_\_\_\_.**_ VOL. II, 21.2.3.2

Answer 28

AIR\_5 Recall the effect of a zone controller failure on the remainder of the air conditioning system. **If both channels of the zone controller fail**: * The pack controllers control temperature at a fixed output of [**_68_**°F]. * **_Flight deck_** and **_forward attendant_** panel control of temperature and zone temperature regulation is no longer possible. * PACK FLOW selector is **_inoperative_**. VOL. II, 21.2.3.2

Question 29

AIR\_6 Understand control functions and indications on the CABIN PRESS Panel. **1. VALVE SEL Switch** Used to select which outflow valves are controlled _**\_\_\_\_\_\_\_\_**_. * AFT - Allows the aft outflow valve to be controlled _**\_\_\_\_\_\_\_\_**_. * BOTH - Allows both outflow valves to be controlled _**\_\_\_\_\_\_\_\_**_. * FWD - Allows the forward outflow valve to be controlled _**\_\_\_\_\_\_\_\_**_. VOL. II, 21.4.7

Answer 29

AIR\_6 Understand control functions and indications on the CABIN PRESS Panel. **1. VALVE SEL Switch** Used to select which outflow valves are controlled **_manually_**. * AFT - Allows the aft outflow valve to be controlled manually. * BOTH - Allows both outflow valves to be controlled manually. * FWD - Allows the forward outflow valve to be controlled manually. VOL. II, 21.4.7

Question 30

AIR\_6 Understand control functions and indications on the CABIN PRESS Panel. **2. V/S CTL Switch** Used to control the position of the outflow valves in the _**\_\_\_\_\_\_\_**_ mode. The switch is spring loaded to the neutral position and must be held in the desired position to move the selected outflow valve. * UP - The selected outflow valves move toward the _**\_\_\_\_\_\_\_**_ position, cabin altitude _**\_\_\_\_\_\_\_.**_ * DN - The selected outflow valves move toward the _**\_\_\_\_\_\_\_**_ position, cabin altitude _**\_\_\_\_\_\_\_.**_ * Neutral - The selected outflow valves **\_\_ \_\_\_\_** move VOL. II, 21.4.7

Answer 30

AIR\_6 Understand control functions and indications on the CABIN PRESS Panel. **2. V/S CTL Switch** Used to control the position of the outflow valves in the **_manual_** mode. The switch is spring loaded to the neutral position and must be held in the desired position to move the selected outflow valve. * UP - The selected outflow valves move toward the **_open_** position, cabin altitude **_increases._** * DN - The selected outflow valves move toward the **_closed_** position, cabin altitude **_decreases._** * Neutral - The selected outflow valves **_do not_** move VOL. II, 21.4.7

Question 31

AIR\_6 Understand control functions and indications on the CABIN PRESS Panel. **3. MODE SEL pb** * AUTO (lights out) - The _**\_\_\_\_\_\_\_\_\_**_ system operates in automatic mode. * MAN - The selected _**\_\_\_\_\_\_**_ valves are controlled manually using the _**\_\_\_\_\_\_\_\_\_\_\_**_ switch. * FAULT - Illuminates amber if the pressure _**\_\_\_\_\_\_\_\_**_ fail. VOL. II, 21.4.7

Answer 31

AIR\_6 Understand control functions and indications on the CABIN PRESS Panel. **3. MODE SEL pb** * AUTO (lights out) - The **_pressurization_** system operates in automatic mode. * MAN - The selected **_outflow_** valves are controlled manually using the **_MAN V/S CTL_** switch. * FAULT - Illuminates amber if the pressure **_controllers_** fail. VOL. II, 21.4.7

Question 32

AIR\_6 Understand control functions and indications on the CABIN PRESS Panel. **4. LDG ELEV Selector** * AUTO - The active controller uses landing elevation information from the _**\_\_\_\_**_. * Manual (out of the _**\_\_\_\_\_**_ position) - The active controller uses landing elevation information from the **_\_\_\_\_\_\__** selector. VOL. II, 21.4.7

Answer 32

AIR\_6 Understand control functions and indications on the CABIN PRESS Panel. **4. LDG ELEV Selector** * AUTO - The active controller uses landing elevation information from the **_FMS_**. * Manual (out of the **_AUTO_** position) - The active controller uses landing elevation information from the **_LDG ELEV_** selector. VOL. II, 21.4.7

Question 33

AIR\_6 **5. DITCHING pb** Selected ON: * All exterior valves below the water line: * The _**\_\_\_\_\_\_**_ fans shut off. * _**\_\_\_\_\_\_**_ and _____ outflow valves close. * **\_\_\_\_\_\_** overboard **\_\_\_\_\_\_** valve closes. * **\_\_\_\_\_\_** flow control valves close. * **\_\_\_\_\_\_** air inlet closes. Note: The outflow valves will not automatically close when the DITCHING pb is selected ON if the MODE SEL pb is in **\_\_\_\_\_\_**. VOL. II, 21.4.7

Answer 33

AIR\_6 **5. DITCHING pb** Selected ON: * All exterior valves below the water line: * The **_cabin_** fans shut off. * **_Forward_** and **aft** outflow valves close. * **Avionics** overboard **_extract_** valve closes. * **_Pack_** flow control valves close. * **_Ram_** air inlet closes. Note: The outflow valves will not automatically close when the DITCHING pb is selected ON if the MODE SEL pb is in **_MAN_**. VOL. II, 21.4.7

Question 34

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **1. Pressurization Mode** * AUTO - Displayed in green when the active controller uses landing elevation information from the _**\_\_\_\_\_\_**_, becomes amber if both _**\_\_\_\_\_\_**_ fail. * MAN - The active controller uses landing elevation selected using the _**\_\_\_\_\_\_**_ selector on the overhead CABIN PRESS panel. * The field is blank if the MODE SEL pb is selected to _**\_\_\_\_\_\_**_ and the VALVE SEL switch is in the _**\_\_\_\_\_\_**_ position. VOL. II, 21.4.4

Answer 34

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **1. Pressurization Mode** * AUTO - Displayed in green when the active controller uses landing elevation information from the **_FMS_**, becomes amber if both **_FMGECs_** fail. * MAN - The active controller uses landing elevation selected using the **_LDG ELEV_** selector on the overhead CABIN PRESS panel. * The field is blank if the MODE SEL pb is selected to **_MAN_** and the VALVE SEL switch is in the **_BOTH_** position. ***_FMGECs_** Flight Management Guidance Envelope Computers* VOL. II, 21.4.4

Question 35

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **2. Landing Elevation** * Displays the elevation of the landing airport as selected from the _**\_\_\_\_\_\_**_ (auto) or the _**\_\_\_\_\_\_\_\_\_\_\_\_**_ selector. * The value is displayed in _**\_\_\_\_\_\_**_. * It is not displayed if the _**\_\_\_\_\_\_**_ pb is selected to MAN and the _**\_\_\_\_\_\_**_ SEL switch is in the BOTH position. * Replaced by two amber Xs if both _**\_\_\_\_\_\_**_ fail. VOL. II, 21.4.4

Answer 35

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **2. Landing Elevation** * Displays the elevation of the landing airport as selected from the **_FMS_** (auto) or the **_LDG ELEV_** selector. * The value is displayed in **_green_**. * It is not displayed if the **_MODE SEL_** pb is selected to MAN and the **_VALVE_** SEL switch is in the BOTH position. * Replaced by two amber Xs if both **_FMGECs_** fail. VOL. II, 21.4.4

Question 36

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **3. Cabin Differential Pressure** Normally green, becomes amber if _**\_\_\_\_\_\_\_\_**_ pressure is above or below a predetermined pressure. NON LOD: Max Pos cabin differential pressure (relief valves) _**\_\_\_\_\_**_ psi Max Neg cabin diff. _**-\_\_\_\_\_**_ psi VOL. II, 21.4.4

Answer 36

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **3. Cabin Differential Pressure** Normally green, becomes amber if **_differential_** pressure is above or below a predetermined pressure. NON LOD: Max Pos cabin differential pressure (relief valves) **_8.85_** psi Max Neg cabin diff. **_-0.73_** psi VOL. II, 21.4.4

Question 37

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **4. Cabin Vertical Speed** * Normally green, _**\_\_\_\_\_\_**_ green if the cabin vertical speed exceeds a _**\_\_\_\_\_\_**_ rate. * On the Cruise_**\_**_ page, the cabin vertical speed is normally a _**\_\_\_\_\_\_**_ display. * If the MODE SEL pb is selected to _**\_\_\_\_\_\_**_, an _**\_\_\_\_\_\_**_ indication is displayed. * The cabin vertical speed is also displayed on the _**\_\_\_\_\_\_**_ page (in digital format) when the system is in the automatic mode. VOL. II, 21.4.4

Answer 37

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **4. Cabin Vertical Speed** * Normally green, **_pulses_** green if the cabin vertical speed exceeds a **_predetermined_** rate. * On the **_cruise_** page, the cabin vertical speed is normally a **_digital_** display. * If the MODE SEL pb is selected to **_MAN_**, an **_analog_** indication is displayed. * The cabin vertical speed is also displayed on the **_DOOR/OXY_** page (in digital format) when the system is in the automatic mode. VOL. II, 21.4.4

Question 38

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **5. Cabin Altitude** * Normally green, _**\_\_\_\_\_\_\_**_ green if the cabin altitude exceeds a _**\_\_\_\_\_\_\_**_ altitude. * Displayed in red if cabin altitude exceeds [_**\_\_\_\_\_\_\_**_] feet. VOL. II, 21.4.4

Answer 38

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **5. Cabin Altitude** * Normally green, **_pulses_** green if the cabin altitude exceeds a **_predetermined_** altitude. * Displayed in red if cabin altitude exceeds [**_9550_**] feet. VOL. II, 21.4.4

Question 39

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **6. Pressure Controller Label** * The active controller is displayed in _**\_\_\_\_\_\_**_. * The **_\_\_\_\_\_\__** controller is not displayed. * The respective controller is displayed in amber if a _______ occurs. VOL. II, 21.4.4

Answer 39

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **6. Pressure Controller Label** * The active controller is displayed in **_green_**. * The **_inactive_** controller is not displayed. * The respective controller is displayed in amber if a **_fault_** occurs. VOL. II, 21.4.4

Question 40

AIR 7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **7. VENT Label** Normally white, becomes _**\_\_\_\_\_\_**_ if low ______ air flow is detected. VOL. II, 21.4.4

Answer 40

AIR 7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **7. VENT Label** Normally white, becomes **_amber_** if low **_extract_** air flow is detected. VOL. II, 21.4.4

Question 41

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **8. Safety Valve** * Normally the SAFETY label is _**\_\_\_\_\_**_ and the valve indication is _**\_\_\_\_\_\_.**_ * They both become _**\_\_\_\_\_\_\_**_ if any safety valve is open. VOL. II, 21.4.4

Answer 41

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **8. Safety Valve** * Normally the SAFETY label is **_white_** and the valve indication is **_green._** * They both become **_amber_** if any safety valve is open. VOL. II, 21.4.4

Question 42

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **9. EXTRACT Label** Normally white, becomes amber if the _**\_\_\_\_\_\_\_**_ extract valve is in an abnormal position. VOL. II, 21.4.4

Answer 42

AIR\_7 Discuss normal and abnormal indications on the ECAM CAB PRESS page. **9. EXTRACT Label** Normally white, becomes amber if the **_avionics_** extract valve is in an abnormal position. VOL. II, 21.4.4

Question 43

AIR\_7 **10. Pack Indications** * The PACK 1(2) labels are _**\_\_\_\_\_\_**_ and the triangles are _**\_\_\_\_\_**_ if the pack flow control valves are open. * They become amber if the respective pack flow control valve is **_\_\_\_\_\_\_\_\_._** VOL. II, 21.4.4

Answer 43

AIR\_7 **10. Pack Indications** * The PACK 1(2) labels are **_white_** and the triangles are **_green_** if the pack flow control valves are open. * They become amber if the respective pack flow control valve is **_closed_**. VOL. II, 21.4.4

Question 44

AIR\_7 **11. Overboard Extract Valve** * Displays the position of the _**\_\_\_\_\_\_\_\_**_ extract valve. * Normally green, becomes amber if the valve is in an **_\_\_\_\_\_\_\_\__** position. VOL. II, 21.4.4

Answer 44

AIR\_7 **11. Overboard Extract Valve** * Displays the position of the **_avionics_** extract valve. * Normally green, becomes amber if the valve is in an **_abnorma_**l position. VOL. II, 21.4.4

Question 45

AIR\_7 **12. Forward and Aft Outflow Valve Indications** * Displays the positions of the forward and aft _**\_\_\_\_\_\_**_ valves. * Normally the FWD (AFT) labels are _**\_\_\_\_**_ and the valve position indications are _**\_\_\_\_\_.**_ * They become amber if either of the following conditions are met: * The respective outflow valve opens more than [_**\_\_\_**_%] in flight. * Automatic control of the respective outflow valve _**\_\_\_\_**_. * If an outflow valve is under manual control, _**\_\_\_\_**_ is displayed in _**\_\_\_\_**_ above the respective FWD (AFT) label. VOL. II, 21.4.4

Answer 45

AIR\_7 **12. Forward and Aft Outflow Valve Indications** * Displays the positions of the forward and aft **_outflow_** valves. * Normally the FWD (AFT) labels are **_white_** and the valve position indications are **_green._** * They become amber if either of the following conditions are met: * The respective outflow valve opens more than [**_95_**%] in flight. * Automatic control of the respective outflow valve **_fails_**. * If an outflow valve is under manual control, **_MAN_** is displayed in **_green_** above the respective FWD (AFT) label. VOL. II, 21.4.4

Question 46

AIR\_7 **12. Forward and Aft Outflow Valve Indications** * Displays the positions of the forward and aft _**\_\_\_\_\_\_**_ valves. * Normally the FWD (AFT) labels are _**\_\_\_\_\_\_**_ and the valve position indications are _**\_\_\_\_\_\_**_. * They become amber if either of the following conditions are met: * The respective outflow valve opens more than [_**\_\_\_\_\_\_**_%] in flight. * Automatic control of the respective outflow valve _**\_\_\_\_\_\_**_. If an outflow valve is under manual control, _**\_\_\_\_\_\_**_ is displayed in green above the respective FWD (AFT) label. VOL. II, 21.4.4

Answer 46

AIR\_7 **12. Forward and Aft Outflow Valve Indications** * Displays the positions of the forward and aft **_outflow_** valves. * Normally the FWD (AFT) labels are **_white_** and the valve position indications are **_green_**. * They become amber if either of the following conditions are met: * The respective outflow valve opens more than [**_95_**%] in flight. * Automatic control of the respective outflow valve **_fails_**. If an outflow valve is under manual control, **_MAN_** is displayed in green above the respective FWD (AFT) label. VOL. II, 21.4.4

Question 47

AIR\_8 **Describe the six phases of the cabin pressurization system when operating automatically.** There are **_six_** pressurization phases when the system is operating automatically: * **Ground:** * The aircraft is _**\_\_\_\_\_\_\_**_ by fully opening the _**\_\_\_\_\_\_\_**_ valves during ground operations. * After landing, _**\_\_\_\_\_\_\_**_ cabin pressure is released _**\_\_\_\_\_\_\_**_ before the outflow valves are _**\_\_\_\_\_\_\_**_ opened. * An _**\_\_\_\_\_\_\_**_ signal is sent to the outflow valves shortly thereafter. VOL. II, 21.3.2.3 Pressurization Phases

Answer 47

AIR\_8 **Describe the six phases of the cabin pressurization system when operating automatically.** There are **_six_** pressurization phases when the system is operating automatically: * **Ground:** * The aircraft is **_depressurized_** by fully opening the **_outflow_** valves during ground operations. * After landing, **_residual_** cabin pressure is released **_gradually_** before the outflow valves are **_fully_** opened. * An **_open_** signal is sent to the outflow valves shortly thereafter. VOL. II, 21.3.2.3 Pressurization Phases

Question 48

**AIR\_8 Describe the six phases of the cabin pressurization system when operating automatically.** There are **_six_** pressurization phases when the system is operating automatically: * Takeoff: * To avoid a _**\_\_\_\_\_\_\_**_ surge at rotation, the active _**\_\_\_\_\_\_\_\_\_**_ pressurizes the aircraft to [_**\_\_**_] psi when takeoff power is applied. VOL. II, 21.3.2

Answer 48

**AIR\_8 Describe the six phases of the cabin pressurization system when operating automatically.** There are **_six_** pressurization phases when the system is operating automatically: * Takeoff: * To avoid a **_pressure_** surge at rotation, the active **_controller_** pressurizes the aircraft to [**_0.1_**] psi when takeoff power is applied. VOL. II, 21.3.2

Question 49

AIR\_8 **Describe the six phases of the cabin pressurization system when operating automatically.** There are _**\_\_\_\_\_**_ pressurization phases when the system is operating automatically: * Climb - After lift-off, the ____ controller varies the **_\_\_\_\_\__** altitude with the _**\_\_\_\_\_\_**_ aircraft rate of climb. VOL. II, 21.3.2

Answer 49

AIR\_8 **Describe the six phases of the cabin pressurization system when operating automatically.** There are **_six_** pressurization phases when the system is operating automatically: * Climb - After lift-off, the **_active_** controller varies the **_cabin_** altitude with the **_actual_** aircraft rate of climb. VOL. II, 21.3.2

Question 50

AIR\_8 **Describe the six phases of the cabin pressurization system when operating automatically.** There are six pressurization phases when the system is operating automatically: * Cruise - At the top of climb, the active controller maintains the _______ cabin altitude that is compatible with the maximum allowable _**\_\_\_\_\_\_\_\_**_ pressure. * Cabin altitude will not exceed [_**\_\_\_\_\_\_\_**_] feet. VOL. II, 21.3.2

Answer 50

AIR\_8 **Describe the six phases of the cabin pressurization system when operating automatically.** There are six pressurization phases when the system is operating automatically: * Cruise - At the top of climb, the active controller maintains the **_lowest_** cabin altitude that is compatible with the maximum allowable **_differential_** pressure. * Cabin altitude will not exceed [**_8000_**] feet. VOL. II, 21.3.2

Question 51

AIR\_8 **Describe the six phases of the cabin pressurization system when operating automatically.** There are six pressurization phases when the system is operating automatically: * Descent - The active controller _**\_\_\_\_\_\_\_\_\_**_ the cabin descent to reach landing field pressure altitude [_**\_\_\_**_] psi just prior to _**\_\_\_\_\_\_\_\_\_**_ . The target cabin altitude for landing is determined by information from either: * The _**\_\_\_\_**_ for airport elevation and _**\_\_\_\_\_\_\_\_\_**_ reference information. * The _**\_\_\_\_\_\_\_\_\_**_ selector on the overhead panel and the _**\_\_\_\_\_\_\_\_\_**_ barometric reference setting. VOL. II, 21.3.2

Answer 51

AIR\_8 **Describe the six phases of the cabin pressurization system when operating automatically.** There are six pressurization phases when the system is operating automatically: * Descent - The active controller **_optimizes_** the cabin descent to reach landing field pressure altitude [**_+0.1_**] psi just prior to **_landing_**. The target cabin altitude for landing is determined by information from either: * The **_FMS_** for airport elevation and **_barometric_** reference information. * The **_LDG ELEV_** selector on the overhead panel and the **_captain’s_** barometric reference setting. VOL. II, 21.3.2

Question 52

AIR\_8 Describe the six phases of the cabin pressurization system when operating automatically. There are six pressurization phases when the system is operating automatically: * Abort - Returns the cabin altitude to the **_\_\_\_\_\_\_\__** elevation if the aircraft does not climb after takeoff (begins a descent prior to climbing above [_**\_\_\_\_**_] feet msl or does not climb more than [_**\_\_\_\_\_**_] feet). * If a climb is subsequently initiated, the normal pressurization scheduled is _**\_\_\_\_\_\_\_**_. VOL. II, 21.3.2

Answer 52

AIR\_8 Describe the six phases of the cabin pressurization system when operating automatically. There are six pressurization phases when the system is operating automatically: * Abort - Returns the cabin altitude to the **_takeoff_** elevation if the aircraft does not climb after takeoff (begins a descent prior to climbing above [**_8000_**] feet msl or does not climb more than [**_5000_**] feet). * If a climb is subsequently initiated, the normal pressurization scheduled is **_resumed_**. VOL. II, 21.3.2

Question 53

AIR\_9 **Describe the effect of losing one pressure controller.** * Two independent pressure controllers provide _**\_\_\_\_\_\_\_\_**_ operation of the pressurization system. * If one pressure controller fails, the other controller becomes _**\_\_\_\_\_\_\_\_.**_ VOL. II, 21.3.3.1

Answer 53

AIR\_9 **Describe the effect of losing one pressure controller.** * Two independent pressure controllers provide **_automatic_** operation of the pressurization system. * If one pressure controller fails, the other controller becomes **_active._** VOL. II, 21.3.3.1

Question 54

AIR\_9 **Describe the effect of losing Both controllers.** * Two independent pressure controllers provide _**\_\_\_\_\_\_\_\_\_**_ operation of the pressurization system. * If both automatic pressure controllers fail, the _**\_\_\_\_\_\_\_\_\_**_ valves must be controlled directly using the _**\_\_\_\_\_\_\_\_\_**_ mode. * Each outflow valve has a _**\_\_\_\_\_\_\_\_\_**_ dedicated to manual operation. * The outflow valves can be operated manually, either _**\_\_\_\_\_\_\_\_\_**_ or _**\_\_\_\_\_\_\_\_\_**_. VOL. II, 21.3.3.1

Answer 54

AIR\_9 **Describe the effect of losing Both controllers.** * Two independent pressure controllers provide **_automatic_** operation of the pressurization system. * If both automatic pressure controllers fail, the **_outflow_** valves must be controlled directly using the **_manual_** mode. * Each outflow valve has a **_motor_** dedicated to manual operation. * The outflow valves can be operated manually, either **_together_** or **_independently_**. VOL. II, 21.3.3.1

Question 55

AIR\_10 **Demonstrate ability to operate pressurization system manually.** * Selecting the MODE SEL pb to _**\_\_\_\_\_**_ on the CABIN PRESS panel switches the pressurization system to the manual mode. * The _**\_\_\_\_\_\_\_\_**_ switch is used to select which outflow valves are controlled manually. * Both outflow valves can be controlled _**\_\_\_\_\_\_\_\_**_ or the forward or aft outflow valve can be controlled \_\_\__**\_\_\_\_\_\_\_\_**_. * Selecting only _**\_\_\_\_\_\_\_\_**_ outflow valve allows the_**\_\_\_\_\_**_ pressure controller, if available, to control the other valve. Example: If both automatic motors for the FWD outflow valve fail: * Selecting the MODE SEL pb to _**\_\_\_\_\_\_**_ and the _**\_\_\_\_\_\_\_\_**_ switch to FWD allows the crew to manually operate the FWD outflow valve while the active controller operates the AFT. * The MAN V/S CTL switch is used to control the position of the _**\_\_\_\_\_\_\_\_**_ valves in the manual mode. * The switch is spring loaded to the neutral position and must be held in the desired position to move the selected outflow valve. VOL. II, 21.3.3.1

Answer 55

AIR\_10 **Demonstrate ability to operate pressurization system manually.** * Selecting the MODE SEL pb to **_MAN_** on the CABIN PRESS panel switches the pressurization system to the manual mode. * The **_VALVE SEL_** switch is used to select which outflow valves are controlled manually. * Both outflow valves can be controlled **_simultaneously_** or the forward or aft outflow valve can be controlled **_independently_**. * Selecting only **_one_** outflow valve allows the **_active_** pressure controller, if available, to control the other valve. Example: If both automatic motors for the FWD outflow valve fail: * Selecting the MODE SEL pb to **_MAN_** and the **_VALVE SEL_** switch to FWD allows the crew to manually operate the FWD outflow valve while the active controller operates the AFT. * The MAN V/S CTL switch is used to control the position of the **_outflow_** valves in the manual mode. * The switch is spring loaded to the neutral position and must be held in the desired position to move the selected outflow valve. VOL. II, 21.3.3.1

Question 56

AIR\_11 **Demonstrate ability to switch pressurization control systems.** * The active controller switches if the MODE SEL pb is selected to _**\_\_\_\_**_ for at least _**\_\_\_\_**_ seconds and then back to _**\_\_\_\_\_\_\_\_**_. VOL. II, 21.3.2.1.1

Answer 56

AIR\_11 **Demonstrate ability to switch pressurization control systems.** * The active controller switches if the MODE SEL pb is selected to **_MAN_** for at least **_three_** seconds and then back to **_AUTO_**. VOL. II, 21.3.2.1.1

Question 57

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **1. FWD and BULK ISOL VALVES pbs** * On (lights out) - The forward (bulk) cargo ventilation system operates _**\_\_\_\_\_\_\_\_**_. * OFF - The forward (bulk) cargo _**\_\_\_\_**_ and _**\_\_\_\_**_ isolation valves close. * FAULT - Illuminates amber if an _**\_\_\_\_**_or _**\_\_\_\_**_ isolation valve is not in the _**\_\_\_\_**_ position or if _**\_\_\_\_**_ is detected in the respective cargo compartment. VOL. II, 21.4.6

Answer 57

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **1. FWD and BULK ISOL VALVES pbs** * On (lights out) - The forward (bulk) cargo ventilation system operates **_normally_**. * OFF - The forward (bulk) cargo **_inlet_** and **_outlet_** isolation valves close. * FAULT - Illuminates amber if an **_inlet_** or **_outlet_** isolation valve is not in the **_selected_** position or if **_smoke_** is detected in the respective cargo compartment. VOL. II, 21.4.6

Question 58

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **2. COOLING Selector** * Used to adjust the _**\_\_\_\_\_\_\_\_**_ of conditioned air mixed with _**\_\_\_\_\_\_\_\_**_ (_**\_\_\_\_\_\_\_\_**_) air. * OFF - The _**\_\_\_\_\_\_\_\_**_ air valve closes and no _**\_\_\_\_\_\_\_\_**_ air is added. * NORM - The cold air valve partially _**\_\_\_\_\_\_\_\_**_. * MAX - The cold air valve fully _**\_\_\_\_\_\_\_\_**_ and the _**\_\_\_\_\_\_\_\_**_quantity of conditioned air is provided. VOL. II, 21.4.6

Answer 58

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **2. COOLING Selector** * Used to adjust the **_quantity_** of conditioned air mixed with **_inlet_** (**_cabin_**) air. * OFF - The **_cold_** air valve closes and no **_cold_** air is added. * NORM - The cold air valve partially **_opens_**. * MAX - The cold air valve fully **_opens_** and the **_maximum_** quantity of conditioned air is provided. VOL. II, 21.4.6

Question 59

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **3. BULK HOT AIR pb** * OFF - The heating element and the heater _**\_\_\_\_\_\_\_**_ shut off. * FAULT - Illuminates amber if a bulk cargo compartment _**\_\_\_\_**_ duct _**\_\_\_\_\_\_\_**_ is detected. * The FAULT light extinguishes if the pb is selected _**\_\_\_\_\_\_\_**_ and the _**\_\_\_\_\_\_\_**_ condition no longer exists. VOL. II, 21.4.6

Answer 59

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **3. BULK HOT AIR pb** * OFF - The heating element and the heater **_fan_** shut off. * FAULT - Illuminates amber if a bulk cargo compartment **_inlet_** duct **_overheat_** is detected. * The FAULT light extinguishes if the pb is selected **_OFF_** and the **_overheat_** condition no longer exists. VOL. II, 21.4.6

Question 60

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **4. FWD and BULK Temperature Selectors** * Used to select the _**\_\_\_\_\_\_\_**_ temperature in the respective compartment. * COLD - [_**\_\_\_**_° F] * 12 o’clock - [_**\_\_\_°**_F] * HOT - [**_\_\_\_\__**°F] Note: _**\_\_\_\_**_ cargo temperature control is not available. VOL. II, 21.4.6

Answer 60

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **4. FWD and BULK Temperature Selectors** * Used to select the **_desired_** temperature in the respective compartment. * COLD - [**_41_**° F] * 12 o’clock - [**_59°_**F] * HOT - [**_77_**°F] Note: **_Aft_** cargo temperature control is not available. VOL. II, 21.4.6

Question 61

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **5. VENTILATION EXTRACT pb** * AUTO (lights out) - The _**\_\_\_\_\_\_**_ ventilation system operates normally. * OVRD - The _**\_\_\_\_\_\_**_ extract valve partially opens and the _**\_\_\_\_\_\_**_ extract valve closes. * FAULT - Illuminates amber if low air flow is detected in the _**\_\_\_\_\_\_**_ compartment (e.g., _**\_\_\_\_\_\_**_ fan fault) VOL. II, 21.4.8

Answer 61

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **5. VENTILATION EXTRACT pb** * AUTO (lights out) - The **_avionics_** ventilation system operates normally. * OVRD - The **_overboard_** extract valve partially opens and the **_underfloor_** extract valve closes. * FAULT - Illuminates amber if low air flow is detected in the **_avionics_** compartment (e.g., **_extract_** fan fault) VOL. II, 21.4.8

Question 62

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **6. CAB FANS pb** * On (lights out) - The cabin fans operated _**\_\_\_\_\_\_\_.**_ * Selected OFF - The cabin fans _**\_\_\_\_ \_\_\_**_. VOL. II, 21.4.6

Answer 62

AIR\_12 Understand the control functions and indications on the AIR CARGO and VENTILATION panels. **6. CAB FANS pb** * On (lights out) - The cabin fans operated **_normally._** * Selected OFF - The cabin fans **_shut off_**. VOL. II, 21.4.6

Question 63

AIR\_13 **State the flow of avionics vent air during normal and abnormal situations.** * Avionics ventilation air is vented overboard through either the _**\_\_\_\_\_\_\_\_**_ extract valve to the _**\_\_\_\_\_\_\_\_**_ outflow valve area or through the_**\_\_\_\_\_\_\_\_**_ extract valve. * The overboard extract valve is located on the _**\_\_\_\_\_\_\_\_**_ of aircraft, aft of the _**\_\_\_\_\_\_\_\_**_ . * When the aircraft is on the ground with the engines Shutdown : * the overboard extract valve _**\_\_\_\_\_\_\_\_**_ , * the underfloor extract valve _**\_\_\_\_\_\_\_\_**_ , and air is vented _**\_\_\_\_\_\_\_\_**_ . * When the aircraft is _**\_\_\_\_\_\_\_\_**_ , or an engine _**\_\_\_\_\_**_ _**\_\_\_\_\_\_\_\_**_ , or if the _**\_\_\_\_\_\_\_\_**_ pb is selected ON: * the overboard extract valve _**\_\_\_\_\_\_\_\_**_ * and the underfloor extract valve _**\_\_\_\_\_\_\_\_**_ and air is vented to the _**\_\_\_\_\_\_\_\_**_ outflow valve area. The FAULT light in the EXTRACT pb on the VENTILATION panel illuminates if _**\_\_\_\_\_\_**_air flow is detected in the _**\_\_\_\_\_\_\_\_**_ compartment (e.g., extract _**\_\_\_\_\_\_\_\_**_ fault). * The FAULT light extinguishes if the EXTRACT pb is selected to _**\_\_\_\_\_\_\_\_**_ . * If the aircraft is on the ground, an external warning horn sounds in the nose gear area after [_**\_\_\_**_] minutes. * If the EXTRACT pb is selected to OVRD, the _**\_\_\_\_\_\_\_\_**_ extract valve partially opens and the _**\_\_\_\_\_\_\_\_**_ extract valve closes. * In this configuration _**\_\_\_\_\_\_\_\_**_ pressure provides the airflow necessary for _**\_\_\_\_\_\_\_\_**_ ventilation. VOL. II, 21.2.6.2

Answer 63

AIR\_13 **State the flow of avionics vent air during normal and abnormal situations.** * Avionics ventilation air is vented overboard through either the **_underfloor_** extract valve to the **_forward_** outflow valve area or through the **_overboard_** extract valve. * The overboard extract valve is located on the **_bottom_** of aircraft, aft of the **_nosewheel_**. * When the aircraft is on the ground with the engines **_shutdown_**: * the overboard extract valve **_opens_**, * the underfloor extract valve **_closes_**, and air is vented **_overboard_**. * When the aircraft is **_in flight_**, or an engine **_is running_**, or if the **_DITCHING_** pb is selected ON: * the overboard extract valve **_closes_** * and the underfloor extract valve **_opens_** and air is vented to the **_forward_** outflow valve area. The FAULT light in the EXTRACT pb on the VENTILATION panel illuminates if **_low_** air flow is detected in the **_avionics_** compartment (e.g., extract **_fan_** fault). * The FAULT light extinguishes if the EXTRACT pb is selected to **_OVRD_**. * If the aircraft is on the ground, an external warning horn sounds in the nose gear area after [**_5_**] minutes. * If the EXTRACT pb is selected to OVRD, the **_overboard_** extract valve partially opens and the **_underfloor_** extract valve closes. * In this configuration **_differential_** pressure provides the airflow necessary for **_avionics_** ventilation. VOL. II, 21.2.6.2

Question 64

AIR\_14 Describe the operation of the lavatory and galley ventilation system. * Lav and galley ventilation is fully _**\_\_\_\_\_\_\_\_\_**_. * On the ground or when differential pressure is less than [_**\_\_\_\_**_] psi an _**\_\_\_\_\_\_**_ extract _**\_\_\_\_**_ draws _**\_\_\_\_**_ air from the lavs and galleys through an extract duct and exhausts it overboard through a _**\_\_\_\_**_ at the _**\_\_\_\_**_of the aircraft. * When the aircraft is pressurized, _**\_\_\_\_**_ pressure forces air from the lavs and galleys through the _**\_\_\_\_**_ duct and out the _**\_\_\_\_\_\_\_\_**_. VOL. II, 21.2.8

Answer 64

AIR\_14 Describe the operation of the lavatory and galley ventilation system. * Lav and galley ventilation is fully **_automatic_**. * On the ground or when differential pressure is less than [**_1.0_**] psi an **_electric_** extract **_fan_** draws **_cabin_** air from the lavs and galleys through an extract duct and exhausts it overboard through a **_venturi_** at the **_rear_** of the aircraft. * When the aircraft is pressurized, **_differential_** pressure forces air from the lavs and galleys through the **_extract_** duct and out the **_venturi_**. VOL. II, 21.2.8

Question 65

AIR\_16 **Recall how the bulk cargo compartment is heated.** (-323 and -302 ONLY) * An **\_\_\_\_\_\_\_ \_\_\_\_\_** blows cabin air over an _**\_\_\_\_\_\_\_**_ heating element, through an inlet _**\_\_\_\_\_\_\_**_ valve, and into the cargo compartment. * An **\_\_\_\_\_\_\_** fan draws air from the _**\_\_\_\_\_\_\_**_ compartment, through an _**\_\_\_\_\_\_\_**_ isolation valve to the _**\_\_\_\_\_\_\_**_ outflow valve area. VOL. II, 21.2.7.3

Answer 65

AIR\_16 **Recall how the bulk cargo compartment is heated.** (-323 and -302 ONLY) * An **_electric fan_** blows cabin air over an **_electric_** heating element, through an inlet **_isolation_** valve, and into the cargo compartment. * An **extract** fan draws air from the **_cargo_** compartment, through an **_outlet_** isolation valve to the **_aft_** outflow valve area. VOL. II, 21.2.7.3

Question 66

AIR\_17 **Recall how the forward cargo compartment is ventilated.** (-200 and -323 ONLY) * Air from the _**\_\_\_\_\_\_**_ and around the _**\_\_\_\_\_\_**_ cargo compartment passes through two inlet _**\_\_\_\_\_\_**_ valves and enters the _**\_\_\_\_\_\_**_ cargo compartment. * An electric extract _**\_\_\_\_\_\_**_ draws air through an _**\_\_\_\_\_\_**_ isolation valve to the _**\_\_\_\_\_\_**_ outflow valve area. * To cool the compartment, cold air supplied by pack _**\_\_\_\_\_**_ , passes through a _**\_\_\_**_ air valve and is mixed with the _**\_\_\_\_**_ air. * To warm the compartment, hot air supplied by **\_\_\_ \_\_\_** 1 is mixed with inlet air through the_**\_\_\_\_\_\_**_ cargo trim air valve. * The ventilation controller operates the inlet and outlet _**\_\_\_\_\_\_**_ valves and the extract _**\_\_\_\_\_\_**_ . * If the inlet and outlet isolation valves are open, the extract fan _**\_\_\_\_\_\_**_ and ventilation is provided. VOL. II, 21.2.7.2

Answer 66

AIR\_17 **Recall how the forward cargo compartment is ventilated.** (-200 and -323 ONLY) * Air from the **_cabin_** and around the **_forward_** cargo compartment passes through two inlet **_isolation_** valves and enters the **_forward_** cargo compartment. * An electric extract **_fan_** draws air through an **_outlet_** isolation valve to the **_forward_** outflow valve area. * To cool the compartment, cold air supplied by pack **_two_**, passes through a **_cold_** air valve and is mixed with the **_inlet_** air. * To warm the compartment, hot air supplied by **_HOT AIR_** 1 is mixed with inlet air through the **_forward_** cargo trim air valve. * The ventilation controller operates the inlet and outlet **_isolation_** valves and the extract **_fan_**. * If the inlet and outlet isolation valves are open, the extract fan **_runs_** and ventilation is provided. VOL. II, 21.2.7.2

Question 67

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **1. High Pressure (HP) Bleed Valves** * In-line green - Valve _**\_\_\_\_\_\_**_ * Cross-line green - Valve _**\_\_\_\_\_\_**_ * Cross-line amber - Valve _**\_\_\_\_\_\_**_ and respective engine is _**\_\_\_\_**_ _**\_\_\_\_\_\_**_or valve disagreement in _**\_\_\_\_\_\_**_ position. VOL. II, 36.3.2

Answer 67

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **1. High Pressure (HP) Bleed Valves** * In-line green - Valve **_open_** * Cross-line green - Valve **_closed_** * Cross-line amber - Valve **_closed_** and respective engine is **_not running_** or valve disagreement in **_closed_** position. VOL. II, 36.3.2

Question 68

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **2. Bleed Valves** * _**\_\_\_\_\_\_**_ as HP bleed valve (below) plus: * **In-line amber - Valve disagreement in the _\_\_\_\_\_\__ position.** 1. In-line green - Valve \_\_\_\_\_ 2. **In-line amber - Valve disagreement in the ____ position** 3. Cross-line green - Valve \_\_\_\_\_ 4. Cross-line amber - Valve ______ and respective engine is not running or valve disagreement in _______ position. VOL. II, 36.3.2

Answer 68

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **2. Bleed Valves** * **_Same_** as HP bleed valve (above) plus: * In-line amber - Valve disagreement in the **_open_** position. 1. High Pressure (HP) Bleed Valves In-line green - Valve open Cross-line green - Valve closed Cross-line amber - Valve closed and respective engine is not running or valve disagreement in closed position. VOL. II, 36.3.2

Question 69

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **3. Bleed Air Temperature** * Normally green, becomes amber if an _**\_\_\_\_\_\_\_**_ exists, or _**\_\_\_\_**_ temperature is detected with wing _**\_\_\_\_\_**_ on. VOL. II, 21.4.2 36.3.2

Answer 69

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **3. Bleed Air Temperature** * Normally green, becomes amber if an **_overheat_** exists, or **_low_** temperature is detected with wing **_anti-ice_** on. VOL. II, 21.4.2 36.3.2

Question 70

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **4. Bleed Air Pressure** * Normally green, becomes amber if the pressure is _**\_\_\_\_\_\_**_ or _**\_\_\_\_\_**_ a predetermined pressure. VOL. II, 21.4.2 36.3.2

Answer 70

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **4. Bleed Air Pressure** * Normally green, becomes amber if the pressure is **_above_** or **_below_** a predetermined pressure. VOL. II, 21.4.2 36.3.2

Question 71

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **5. Engine Labels** * Normally white but become amber when _**\_\_\_\_**_ of the corresponding engine is below _**\_\_\_\_\_**_. VOL. II, 21.4.2 36.3.2

Answer 71

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **5. Engine Labels** * Normally white but become amber when **_N2_** of the corresponding engine is below **_idle_**. VOL. II, 21.4.2 36.3.2

Question 72

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **6. APU Bleed Valve** * In-line green - Valve _**\_\_\_\_\_\_**_ * Cross-line green - Valve _**\_\_\_\_\_\_**_ * Cross-line amber - Valve not fully ____ with _**\_\_\_\_\_\_**_ BLEED pb selected ON VOL. II, 21.4.2 36.3.2

Answer 72

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **6. APU Bleed Valve** * In-line green - Valve **_open_** * Cross-line green - Valve **_closed_** * Cross-line amber - Valve not fully **_open_** with **_APU_** BLEED pb selected ON VOL. II, 21.4.2 36.3.2

Question 73

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **7. GND Label** * Displayed in white when the aircraft is on the _**\_\_\_\_\_\_\_**_ to indicate where _**\_\_\_\_**_ ground air enters the _**\_\_\_\_\_\_\_**_ duct. * It does not provide any indication of whether the_**\_\_\_\_\_\_\_**_ _**\_\_\_\_\_\_\_**_ connection is in use or not. VOL. II, 21.4.2 36.3.2

Answer 73

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **7. GND Label** * Displayed in white when the aircraft is on the **_ground_** to indicate where **_HP_** ground air enters the **_crossbleed_** duct. * It does not provide any indication of whether the **_ground air_** connection is in use or not. VOL. II, 21.4.2 36.3.2

Question 74

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **8. Crossbleed Valve** * In-line green - Valve _**\_\_\_\_\_\_\_**_ * Cross-line green - Valve _**\_\_\_\_\_\_\_**_ * Amber - In _**\_\_\_\_\_\_\_**_ or valve _**\_\_\_\_\_\_\_**_ with commanded position VOL. II, 21.4.2 36.3.2

Answer 74

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **8. Crossbleed Valve** * In-line green - Valve **_open_** * Cross-line green - Valve **_closed_** * Amber - In **_transit_** or valve **_disagreemen_**t with commanded position VOL. II, 21.4.2 36.3.2

Question 75

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **9. Pack Outlet Temperature** * Displays the temperature of conditioned air _**\_\_\_\_\_\_**_ the pack. * Normally green, becomes amber if the temperature exceeds a _**\_\_\_\_\_\_\_\_\_**_ temperature. VOL. II, 21.4.2 36.3.2

Answer 75

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **9. Pack Outlet Temperature** * Displays the temperature of conditioned air **_exiting_** the pack. * Normally green, becomes amber if the temperature exceeds a **_predetermined_** temperature. VOL. II, 21.4.2 36.3.2

Question 76

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **10. Temperature Control Valve** Displays the _**\_\_\_\_\_\_\_\_**_ of the pack’s temperature control valve. * Valve position varies between: * C (Cold) - More bleed air passes through the _**\_\_\_\_\_**_ heat exchanger and _**\_\_\_\_\_\_**_ resulting in a colder pack outlet temperature. * H (Hot) - Less bleed air passes through the _**\_\_\_\_\_**_ heat exchanger and _**\_\_\_\_\_**_ resulting in a hotter pack outlet temperature. VOL. II, 21.4.2 36.3.2

Answer 76

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **10. Temperature Control Valve** Displays the **_position_** of the pack’s temperature control valve. * Valve position varies between: * C (Cold) - More bleed air passes through the **_main_** heat exchanger and **_turbine_** resulting in a colder pack outlet temperature. * H (Hot) - Less bleed air passes through the **_main_** heat exchanger and **_turbine_** resulting in a hotter pack outlet temperature. VOL. II, 21.4.2 36.3.2

Question 77

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **_12. Pack Flow_** Displays actual pack air _**\_\_\_\_\_**_ rate. * The 12 o’clock position represents _**\_\_\_**_% airflow rate. * Flow varies between: * LO - [_**\_\_**_%] airflow. * HI - [_**\_\_\_**_%] airflow. VOL. II, 21.4.2 36.3.2

Answer 77

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **_12. Pack Flow_** Displays actual pack air **_flow_** rate. * The 12 o’clock position represents **_100_**% airflow rate. * Flow varies between: * LO - [**_70_**%] airflow. * HI - [**_130_**%] airflow. VOL. II, 21.4.2 36.3.2

Question 78

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **13. Pack Flow Control Valve** * Displayed in-line green if the valve is _**\_\_\_\_**_ (not fully _**\_\_\_\_\_**_). * Displayed cross-line amber if the valve is fully _**\_\_\_\_\_**_. VOL. II, 21.4.2 36.3.2

Answer 78

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **13. Pack Flow Control Valve** * Displayed in-line green if the valve is **_open_** (not fully **_closed_**). * Displayed cross-line amber if the valve is fully **_closed_**. VOL. II, 21.4.2 36.3.2

Question 79

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **14. Ram Air Valve** Displays the position of the ram-air inlet valve. * Normally cross-line green (closed). Can also be displayed: * In-line green - _**\_\_\_\_\_\_\_**_ * In-line amber - _**\_\_\_\_\_\_\_**__**\_\_\_\_\_\_\_**_ * Slant-line amber -**\_\_ \_\_\_\_\_** * Cross-line amber - _**\_\_\_\_\_\_\_**_ _**\_\_\_\_\_\_\_**_ * VOL. II, 21.4.2 36.3.2

Answer 79

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **14. Ram Air Valve** Displays the position of the ram-air inlet valve. * Normally cross-line green (closed). Can also be displayed: * In-line green - **_Open_** * In-line amber - **_Failed open_** * Slant-line amber - **_In-transit_** * Cross-line amber - **_Failed closed_** VOL. II, 21.4.2 36.3.2

Question 80

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **14. Ram Air Valve** Displays the position of the ram-air inlet valve. * Normally cross-line green (\_\_\_\_\_\_\_). * Can also be displayed: * In-line green - \_\_\_\_\_\_\_ * In-line amber - _____ \_\_\_\_\_\_\_ * Slant-line amber - _____ \_\_\_\_\_\_\_ * Cross-line amber -\_\_\_\_\_ \_\_\_\_\_\_\_ VOL. II, 21.4.2 36.3.2

Answer 80

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **14. Ram Air Valve** Displays the position of the ram-air inlet valve. * Normally cross-line green (**_closed_**). * Can also be displayed: * In-line green - **_Open_** * In-line amber - **_Failed open_** * Slant-line amber - **_In-transit_** * Cross-line amber - **_Failed closed_** * VOL. II, 21.4.2 36.3.2

Question 81

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **15. Pack Bypass Valve** Displays the status of the pack bypass valve. * An _**\_\_\_\_\_\_**_ is only displayed if the valve is open. * If the compressor/turbine section of the pack fails, the pack bypass valve _**\_\_\_\_\_**_ and the arrow is displayed in _**\_\_\_\_\_\_**_. * The arrow is displayed in amber if it fails in the _**\_\_\_\_\_\_**_ position. VOL. II, 21.4.2 36.3.2

Answer 81

AIR\_18 Discuss normal and abnormal indications on the ECAM BLEED page as they relate to the air conditioning system. **15. Pack Bypass Valve** Displays the status of the pack bypass valve. * An **_arrow_** is only displayed if the valve is open. * If the compressor/turbine section of the pack fails, the pack bypass valve **_opens_** and the arrow is displayed in **_green_**. * The arrow is displayed in amber if it fails in the **_open_** position. VOL. II, 21.4.2 36.3.2

Question 82

AIR\_19 **Understand the priority of pneumatic systems for pack operation.** The APU bleed air has priority over _**\_\_\_\_\_\_\_**_ bleed air. When the APU Bleed pb is selected on: * The APU bleed valve opens if: * APU N speed is greater than [_**\_\_\_\_**_%] * Altitude is less than _**\_\_\_\_\_\_\_**_ft. (climbing) or _**\_\_\_\_\_\_\_**_ ft. (descending), * and no leak is detected in the APU or _**\_\_\_\_\_\_\_**_ side of the bleed system. * The engine _**\_\_\_\_\_\_\_**_ and _**\_\_\_\_\_\_\_**_ valves close. * The crossbleed valve opens if the crossbleed selector is in the _**\_\_\_\_\_\_\_**_ position. VOL. II, 36.2.3.2

Answer 82

AIR\_19 **Understand the priority of pneumatic systems for pack operation.** The APU bleed air has priority over **_engine_** bleed air. When the APU Bleed pb is selected on: * The APU bleed valve opens if: * APU N speed is greater than [**_95_**%] * Altitude is less than **_25,000_** ft. (climbing) or **_23,000_** ft. (descending), * and no leak is detected in the APU or **_left_** side of the bleed system. * The engine **_bleed_** and **_HP_** valves close. * The crossbleed valve opens if the crossbleed selector is in the **_AUTO_** position. VOL. II, 36.2.3.2

Question 83

**AIR\_20 Identify if high and/or low pressure ground supplied air is connected.** * The white _**\_\_\_\_\_\_**_ indication on the _**\_\_\_\_**_page is displayed when the aircraft is on the ground to indicate where _**\_\_**_ ground air enters the crossbleed duct. * When _**\_\_\_\_**_ ground air is in use, the bleed air temperature and pressure indications on the _**\_\_\_\_**_ page display the temperature and pressure of the _**\_\_\_\_**_ air if the engine bleed valves are _**\_\_\_\_**_. * There are no other indications that _**\_\_\_\_**_ ground air is in use. * _**\_\_\_\_**_ sources may be used to supply low pressure (LP) conditioned air _**\_\_\_\_**_ to the mixing unit for aircraft heating and cooling. * _**\_\_\_\_**_ low pressure connections on the bottom of the aircraft allow one or two ground air sources to be connected to the aircraft. * There are no direct flight deck indications that _**\_\_\_\_\_\_\_\_**_ _**\_\_\_\_\_\_\_\_**_ air is in use. VOL. II, 21.2.4.1 36.2.5

Answer 83

**AIR\_20 Identify if high and/or low pressure ground supplied air is connected.** * The white **_GND_** indication on the **_bleed_** page is displayed when the aircraft is on the ground to indicate where **_HP_** ground air enters the crossbleed duct. * When **_HP_** ground air is in use, the bleed air temperature and pressure indications on the **_BLEED_** page display the temperature and pressure of the **_HP_** air if the engine bleed valves are **_closed_**. * There are no other indications that **_HP_** ground air is in use. * **_External_** sources may be used to supply low pressure (LP) conditioned air **_directly_** to the mixing unit for aircraft heating and cooling. * **_Two_** low pressure connections on the bottom of the aircraft allow one or two ground air sources to be connected to the aircraft. * There are no direct flight deck indications that **_ground_** **_conditioned_** air is in use. VOL. II, 21.2.4.1 36.2.5

Question 84

During flight how can you change pressurization controllers? (a) cycle the LDG ELEV auto knob out of the auto position then back to auto (b) switching the cabin press mode sei pushbutton to MAN for at least 3 seconds then returning it to auto. (c) cycle the cabin pressurization man V/S CTL switch

Answer 84

(b) switching the cabin press mode sei pushbutton to MAN for at least 3 seconds then returning it to auto.

Question 85

During takeoff, when will the ram air inlet and outlet flaps close: (a) As soon as the undercarriage is selected up (b) When the thrust lever is at or above CL and wheel speed is at or above 70 kts (c) When thrust levers are above idle and wheel speed is at or above 70kts

Answer 85

(b) When the thrust lever is at or above CL and wheel speed is at or above 70 kts

Question 86

If Ram air is being supplied to the mixing unit during an emergency, what temperature will this ram air be? (a) Ambient (b) The temperature selected by the zone controller (c) 20°

Answer 86

(a) Ambient

Question 87

What function does the DITCHING Pb carry out: (a) Closes the outflow valve, pack flow control valves, and the emergency ram air inlet only (b) Closes the outflow valve, pack flow control valves, emergency ram air inlet and the avionics ventilation overboard valve only (c) Closes the avionics ventilation overboard valve, the emergency ram air inlet, pack flow control valves only

Answer 87

(b) Closes the outflow valve, pack flow control valves, emergency ram air inlet and the avionics ventilation overboard valve only

Question 88

The cargo vent AFT ISOL VALVES fault light indicates: (a) Isolation valve has closed and the fan stopped (b) Cargo smoke warning system is faulty (c) Either inlet of outlet isolation valve is not in selected position

Answer 88

(c) Either inlet of outlet isolation valve is not in selected position