ATA21 - Air conditioning / pressurisation / ventilation Flashcards
1
Q
- Following an ECAM CAB PRESS SYST 1 AMBER FAULT :
MASTER CAUTION is activated and ECAM actions must be taken by the crew
SYSTEM 2 must be selected by the crew
SYSTEM 2 takes over automatically without crew action
A
SYSTEM 2 takes over automatically without crew action
2
Q
- The safety valves are operated :
Electrically
Hydraulically
Pneumatically
A
Pneumatically
3
Q
296. During landing run PACK AIR FLAPS open when speed is less than : 80 kts (after 30 sec delay) 70 kts (after 3 min) 70 kts (after 20 sec delay)
A
70 kts (after 20 sec delay)
4
Q
- Conditioned AIR is distributed to :
COCKPIT, CARGO BAYS, and CABIN
COCKPIT, FORWARD and AFT CABINS
COCKPIT, AVIONICS BAY, CABIN
A
COCKPIT, FORWARD and AFT CABINS
5
Q
- What is the max negative differential pressure for the cabin :
0 PSI
1 PSI below ambient
2 PSI above ambient
A
1 PSI below ambient
6
Q
- TRIM AIR VALVE, each one optimizes the temperature by :
Adding HOT AIR
Adding FRESH AIR
Modulation of PACK FLOW
A
Adding HOT AIR
7
Q
- Engine flow demand, when the heating or cooling demand in one zone cannot be
satisfied :
The minimum IDLE must be increased manually
The minimum IDLE is increased automatically
In any case, flight IDLE is sufficient
A
The minimum IDLE is increased automatically
8
Q
301. Is it possible to use simultaneously PACKS and LP GROUND UNIT during long stops on a hot airport : Yes No Yes, if external temperature is > 50°C
A
No
9
Q
- The DITCHING switch when selected ON, sends a closure signal to :
The outflow valve and the pack flow control valves
The RAM AIR inlet and ventilation inlet and extract valves
Both answers are correct
A
Both answers are correct
10
Q
- The cabin zone temperature sensors are ventilated by the air extracted by the lavatory
and galleys extraction fans :
True
False
A
True
11
Q
304. The RAM AIR P/B should be used : At any time Only when DIFF PRESS is less than 1 PSI When PRESS is greater than 1 PSI DIFF Only after outflow valve is fully opened
A
Only when DIFF PRESS is less than 1 PSI
12
Q
305. When landing elevation is set to AUTO, the landing elevation is sent to the controller from : FMGS FCU ADIRS
A
FMGS
13
Q
- The temperature selectors are located in :
The cockpit
The cabin
Both answers are correct
A
The cockpit
14
Q
- To see the position of the outflow valve it is necessary to call ECAM :
COND PAGE
BLEED PAGE
PRESS PAGE
A
PRESS PAGE
15
Q
- Cabin pre-pressurization starts at :
Engine start
TAKE-OFF power selection
LIFT-OFF
A
TAKE-OFF power selection
16
Q
- ACSC both channels failure :
Pack outlet temperature is controlled between 5°C and 30°C by the ANTI-ICE
VALVE
The pack is lost
A
The pack is lost
17
Q
- The pack flow control valve closes automatically in case of :
PACK overheat, ENGINE FIRE PUSH BUTTON released , ENGINE START,
DITCHING P/B pressed
BLEED VALVE FAILURE, PACK OUTLET PRESSURE increase
both answers are correct
A
PACK overheat, ENGINE FIRE PUSH BUTTON released , ENGINE START,
DITCHING P/B pressed
18
Q
- Temperature control is automatic and is regulated by :
ACSC 1
ACSC 2
Both answers are correct
A
Both answers are correct
19
Q
- In case of total ZONE CONTROLLER failure :
Hot air and TRIM AIR VALVES open and PACK 1 delivers air at fixed temperature
(+24°C)
Hot air and TRIM AIR VALVES close and PACK 2 delivers air at fixed temperature
(+15°C)
Optimized and back-up temp regulation is lost, PACKS deliver air at fixed
temperature (PACK1 at +20°C and PACK 2 at +10°c)
A
Optimized and back-up temp regulation is lost, PACKS deliver air at fixed
temperature (PACK1 at +20°C and PACK 2 at +10°c)
20
Q
- Hot air pressure regulating valve :
Regulates the pressure of hot air tapped upstream of the packs
Is springloaded open in the absence of air
Opens automatically in case of duct overheat
A
Regulates the pressure of hot air tapped upstream of the packs
21
Q
- In automatic mode, cabin pressurization is optimized by using information from :
FMGS cruise level, time to climb and static pressure information
Actual cruise level, setting and landing elevation input
Selected cabin altitude rotary switch and FMGS landing elevation
A
FMGS cruise level, time to climb and static pressure information
22
Q
- The outflow valve is powered by :
One out of two electric motors
One out of three electric motors
Three mechanically linked electric motors
A
One out of three electric motors
23
Q
- Two identical independent automatic Cabin Pressure Controllers are used for cabin
pressurization :
One controller is active, one is in standby
Both controllers are used by FMGS
N°1 controller is for climb phase and N°2 controller is for CRUISE and DESCENT
A
One controller is active, one is in standby
24
Q
- Emergency RAM AIR inlet, when set to ON, the RAM AIR VALVE will open :
In any case
Provided ditching is selected
If delta P < 1 PSI and ditching not selected
A
If delta P < 1 PSI and ditching not selected
25
318. The pressure safety valves open at :
8. 06 PSI
8. 6 PSI
9. 0 PSI
8.6 PSI
26
319. In case of ACSC total failure :
The pack outlet air temperature is controlled by Pack by-pass valve
The pack outlet air temperature is controlled by Trim air valve
Pack is lost
Pack is lost
27
320. Trim air valves are modulated by :
ACSC
Anti-ice valve
Hot air pressure regulating valve
ACSC
28
321. In case of CPC 1 FAILURE in flight :
The system transfers automatically to CPC 2
CPC 2 must be manually selected
Landing elevation must be set on the landing elevation knob
The system transfers automatically to CPC 2
29
322. On ECAM CAB PRESS page, the SAFETY VALVE INDICATION changes to amber if :
Both SAFETY VALVES are fully open
One SAFETY VALVE is open
Both SAFETY VALVES are fully closed
One SAFETY VALVE is open
30
323. When MODE SEL is set to MANUAL, the OUTFLOW VALVE is controlled by signals
sent via CPC1 or 2 :
True
False
False
31
324. Pack flow may be selected from :
The cockpit
The cabin
Both answers are correct
The cockpit
32
325. Hot air FAULT light illuminates on the air conditionning panel :
The hot air press reg. valve opens and the trim air valves close
The hot air press reg. valve closes and the trim air valves open
The hot air press reg. valve closes and the trim air valves close
The hot air press reg. valve closes and the trim air valves close
33
```
326. When using APU BLEED to supply the packs, with the pack flow selector at NORM,
the pack air flow is :
LOW (80% of normal)
NORMAL
HIGH (120% of normal)
```
HIGH (120% of normal)
34
327. One ACSC channel failure :
The other channel operates as a back up mode and regulation is not optimized
The other channel takes over
Pack is lost
The other channel takes over
35
328. Pack flow control valve :
Is pneumatically operated and electrically controlled
Is electrically operated and pneumatically controlled
Opens automatically during engine starting
Is pneumatically operated and electrically controlled
36
```
329. On ECAM CAB PRESS page, the outflow valve indicator changes to AMBER if outflow
is :
Fully closed
Open more than 95% during flight
Fully open on ground
```
Open more than 95% during flight
37
330. After a ACSC channel 2 failure :
Cabin zones are controlled to 24°C by the other channel
Packs deliver fixed temp air (15°C)
Cabin zones are controlled at requested temperature by the other channel
Cabin zones are controlled at requested temperature by the other channel
38
331. in normal operation, pressurization is :
Fully automatic
Manually controlled
Both answers are correct
Fully automatic
39
```
332. Which controller generates EXCESS CABIN ALTITUDE and PRESSURE OUTPUTS
for ECAM indication in manual mode :
Both answers are correct
CPC 1
CPC 2
```
CPC1
40
333. During ground function operation, the outflow valve is :
Fully open
Fully closed
Positionned according to FMGS demands
Fully open
41
```
334. On ECAM CAB PRESS page the cabin altitude indication changes to red when cabin
altitude is :
> 14 000 ft
> 8 800 ft
> 9 550 ft
```
> 9 550 ft
42
335. Hot air press reg. valve has failed in open operation :
Optimised regulation is lost
The temperature stays at the value selected when the failure occurs
No effect
No effect
43
336. When APU is suppling the packs, the packs controller sends a demand signal to
increase air flow when a zone temperature cannot be satisfied :
To the pack RAM AIR inlet flap
To the APU ECB
Pack control valve
To the APU ECB
44
337. With a Pack controller secondary channel failure :
No effect on pack regulation, back up mode is lost
Pack is lost
No effect on pack regulation, back up mode is lost
45
338. When the pack flow control knob is positionned to HI, air flow is :
80 % OF NORMAL
150 % OF NORMAL
120 % OF NORMAL
120 % OF NORMAL
46
339. What is the MAX NORM CAB ALT :
8800 ft
9550 ft
14000 ft
8800 ft
47
340. During normal flight, skin temp < +32°C, the avionics ventilations system controls the
temperature of the cooling air by :
Adding air conditioned to the flow
Passing air through a skin heat exchanger
Adding AVIONICS BAY AIR
Passing air through a skin heat exchanger
48
341. Where do the WING ANTI-ICE indications appear on the ECAM ?
There is no indication on ECAM PAGE for WING ANTI-ICE system
ANTI-ICE appears in white on the ECAM BLEED page when the WING ANTI-ICE
P/B is ON
A green triangle appears in the ECAM BLEED page when the WING ANTI-ICE P/B
is OFF
ANTI-ICE appears in white on the ECAM BLEED page when the WING ANTI-ICE
P/B is ON
