11.20 Cabin Systems

Question 1

What does CIDS stand for?

Answer 1

Cabin inter-communication data system

Question 2

What are the controlling devices known as?

Answer 2

Directors

Question 3

How many directors are there and when are they active?

Answer 3

3:

-1 is active, the other 2 are in hot standby

Question 4

What can you do at a flight attendant panel?

Answer 4

Allows control and monitoring of the cabin and passenger system functions

Question 5

What does DEU stand for? how many are they and what are they called?

Answer 5

• decoder/encoder unit
• 2
• DEU A and B

Question 6

What does DEU A concern?

Answer 6

Passenger related functions

Cabin lighting, passenger service units, passenger individual lights, signs, calls and speakers

Question 7

What does DEU B concern?

Answer 7

Cabin crew related functions

Area call panels, attendant indication panels, handset used for inter phone

Question 8

What powers DEU A and B?

Answer 8

28v DC

Question 9

What communication functions does CIDS have? (3)

Answer 9

• passenger address
• cabin interphone
• service interphone

Question 10

Who has priority when using the passenger address system?

Answer 10

Flight deck

Question 11

What is the order for the priority of the PA system?

Answer 11

• flight deck
• cabin
• pre-recorded messages
• in flight entertainment

Question 12

What does the cabin interphone system allow?

Answer 12

Communication between different cabin positions and between cabin and flight deck

Question 13

What selections does the flight deck have relating to cabin interphone? (3)

Answer 13

• emergency call
• all call
• PURS (purser)

Question 14

What does the service interphone enable communication between? (3)

Answer 14

• Different service jacks
• flight deck to service jacks
• service jacks to cabin positions

Question 15

What 4 locations may you find a service jack?

Answer 15

• avionics bay
• cargo bay
• APU bay
• engines

Question 16

What 5 different indication systems is carried out by the CIDS?

Answer 16

• smoke detection
• emergency lighting
• ice protection
• electrical load management
• doors and slides

Question 17

What does the CIDS system control?(6)

Answer 17

• cabin and passenger lighting
• emergency evacuation
• signs
• pax call
• in flight entertainment
• air conditioning

Question 18

What is used to control and monitor the system and to activate other cabin configurations?

Answer 18

Cabin management terminal

Question 19

What two kinds of monitors are there? [2]

Answer 19

• CRT’s

- LCD’s

Question 20

When will the monitors automatically retract? (3)

Answer 20

• an electrical power failure for more than 200ms
• rapid cabin decompression
• a mechanical resistance while the monitor is moving downwards

Question 21

What is required to enable passengers to send and receive internet data, faxes, emails and make phone calls?

Answer 21

SATCOM

Question 22

When are leaky line antennae usually used?

Answer 22

In confined spaces where standard antennae would find difficult operating

Question 23

What does the satellite data unit have full duplex connectivity with? (2)

Answer 23

• Avionics communications router (ACR)

- high speed data unit (HSDU)

Question 24

In cabin video monitoring system, what do area distribution units do?

Answer 24

Convert the camera analog video signal into a digital signal