Test 4

Question 1

How many Radio Interface Units are there?

Answer 1

Two

Question 2

Are radio interface units interchangeable?

Answer 2

No - RIU 1 interfaces with the Ext. Compensator Unit

Question 3

How many VHF COM transceivers are onboard?

Answer 3

3

Question 4

How can the radios be tuned?

Answer 4

СТР
CNS
Graphical Tuning (Map)

Question 5

What ways can the Nav Radios be tuned?

Answer 5

Automatically by FMS

Manually, using СТР

CNS

Graphical Tuning (Map)

Question 6

The Air Data System includes how Many Air Data Computers?

Answer 6

No standalone ADC

4 ADSPs

Question 7

What is the primary source of angle-of-attack information?

Answer 7

The 4 ADSPs

AOA Vanes are a backup source

Question 8

How can we manually change the Air Data source to a display?

Answer 8

Reversion Switch Panel

Question 9

How do we align the IRUs?

Answer 9

Alignment is automatic using GNSS data

Question 10

Where are the IRUs located?

Answer 10

In the flight deck

Nbr 1 & 3 - Left Side Console

Nbr 2 - Right Side Console

Question 11

What are the major functions of the VHF-Nav System?

Answer 11

VOR
ILS- Glideslope, Localizer, Marker Beacon

Question 12

When is Radio Altimeter active?

Answer 12

≤ 2500 ft AGL

Question 13

How do we adjust the weather radar settings?

Answer 13

Weather radar controls are on the CTP

Question 14

What is TSS?

Answer 14

The Traffic Surveillance System

Question 15

What 2 Systems make up ADS-B?

Answer 15

GNSS and TSS.

Question 16

How many Flight Management Computers are there?

Answer 16

None.
EMS is an application hosted in IPCS 1 & 2

Question 17

Primary Component That Controls and Monitors
CMS?

Answer 17

Cabin controller

Question 18

The Cabin Controller sends it signals to which
2 components?

Answer 18

Zone 1 and 2 boxes

Question 19

The Zone Boxes send their signals to which components?

Answer 19

Passenger Service Unit
Controllers (PSUCs)

Question 20

Passwords for CMS Maintenance and IFE Maintenance?

Answer 20

Cdam
3980

Question 21

How many VHF Comm Transceivers and antennas does the A220 have?

Answer 21

• 3 Transceivers
• 3 Antennas

Question 22

What are the indications of an incoming SELCAL call?

Answer 22

SELCAL Advisory message
Aural Alert
CALL light illuminates on ACP

Question 23

In which component is the ACARS function?

Answer 23

Radio Interface Unit #1

Question 24

What is connected to RIU #1 that makes it unique?

Answer 24

External
Compensation
Unit

Question 25

What component is part of the CVR system in case of loss of DC ESS BUS 2?

Answer 25

Recorder Independent
Power Supply

Question 26

How many Emergency Locator Transmitters (ELTs) does the A220 have?

Answer 26

Two (2)
• 1 fixed
• 1 Portable

Question 27

Which ELT component is giving us problems currently?

Answer 27

The Antenna

Question 28

What is our primary source of AOA information?

Answer 28

ADSPS - AOA Vanes are
Secondary inputs

Question 29

How can we manually change the source of data to a display?

Answer 29

Reversion Switch Panel
(Pedestal)

Question 30

Where is the Weather Radar
Transceiver located?

Answer 30

Under the Radome.
It is part of the antenna.
Receiver - Transmitter Antenna (RTA)

Question 31

On the FMA - what does the GREEN mode indicate?

Answer 31

Captured or Active mode

Question 32

On the FMA - what does the WHITE mode indicate?

Answer 32

Armed mode

Question 33

When can the Emergency Descent Mode be manually engaged?

Answer 33

Aircraft altitude is > 25,000 ft.

Question 34

When does the Emergency Descent Mode automatically engage?

Answer 34

Cabin altitude is > 14,500 ft.