CNS/ATM

Question 0

What is required to control the RINU-Gs from the NAV/COMM CDU?

Answer 0

The pilot or copilot CDU must be powered on.

Question 1

How are the RINU-Gs controlled?

Answer 1

Through the CDU-7000

Question 2

RINU-G will shut down when the aircraft battery falls below_______.

Answer 2

17.5 Vdc

Question 3

What are the three primary functions of the RINU-G

Answer 3

1. Determines attitude and horizontal velocities of the aircraft.
2. Determines the ground speed and drift angle of the aircraft.
3. Determines the ground speed and drift angle of the aircraft.

Question 4

What information does the GEM V module compute?

Answer 4

Position
Velocity
Time
Formats

Question 5

What are two functions of the

GEM V module?

Answer 5

Receiver Autonomous Integrity Monitoring(RAIM)

Fault Detection Exclusion(FDE)

Question 6

The CDU will currently only display data for _____ satellites, even though the receiver may be using up to _______.

Answer 6

5, 12

Question 7

What is Fault Detection Exclusion?

Answer 7

Ability of the receiver to detect and exclude a bad satellite from navigation solution.

Question 8

How many satellites are required for FDE?

Answer 8

Requires receiver be tracking minimum of SIX satellites.

Question 9

What is RAIM?

Answer 9

Receiver Autonomous Integrity Monitoring

Ability of receiver to determine if the integrity of NAV solution meets requirements for the phase of flight.

Question 10

How many satellites are required for RAIM?

Answer 10

Requires receiver to be tracking 5 satellites.

Question 11

What are the APX118/123 circuit breakers?

Answer 11

FLC lower

• IFF Power
• Zero IFF

Question 12

What are the IFF modes with

APX-123?

Answer 12

1, 2, 3A, C, S, 4, 5, emergency

Question 13

Mode 1

APX-123

Answer 13

• military

- 4,096 codes

Question 14

Mode 2

APX-123

Answer 14

• military
• platform ID/ sortie ID
• 4,096 codes

Question 15

Mode 3/A

APX-123

Answer 15

• civilian
• temporary platform ID code assigned by controlling agencies
• used primarily for airspace management
• 4,096 codes

Question 16

Mode C

APX-123

Answer 16

• civilian
• pressure altitude code
• 1,280 codes in 100 ft. Increments

Question 17

Mode S

APX-123

Answer 17

• Civilian
• selective interrogation
• permanent address for each A/C
• level 2 elementary surveillance & enhanced surveillance

Question 18

Mode 4

APX-123

Answer 18

• military
• true IFF
• crypto is valid for 24 hours

Question 19

Mode 5

APX-123

Answer 19

• military
• new crypto based ID with improved Information Assurance
• mode 5 unique data

Question 20

What is mode 5 unique data?

Answer 20

• national origin
• mission code
• 14 bit platform ID number
• position
• secure transmission of mode 1,2,3/A, C

Question 21

What are the two levels of mode 5?

Answer 21

Level 1: challenge and reply

Level 2: position reporting

Question 22

How is altitude data passed from the CDU-7000 to the transponder(APX-123)?

Answer 22

1553 data bus

Question 23

WRA GO one flash

Answer 23

Receiver/ Transmitter SRA A1

Question 24

WRA GO 2 flashes

Answer 24

Single board computer SRA 2

Question 25

WRA GO 3 flashes

Answer 25

Mode 4/5 Crypto SRA A3

Question 26

WRA GO four flashes

Answer 26

Signal processor SRA A4

Question 27

WRA GO five flashes

Answer 27

Power supply SRA PS1

Question 28

WRA GO six flashes

Answer 28

Inop crypto

Return to depot for further investigation

Question 29

How soon must the APX-123 battery be replaced after a low battery indication?

Answer 29

2 weeks

Question 30

What 3 fuses are the front of the APX-123 transponder?

Answer 30

115 Vac
115 Vac RTN
28 Vdc

Question 31

What happens if the J1 connector on the APX-123 is removed?

Answer 31

Transponder enters sleep mode. Keys in the mode 4/5 crypto SRA are zeroized and TOD is lost.

Question 32

What are the two levels of mode S operation?

APX-118

Answer 32

Elementary Surveillance (ELS)
Enhanced Surveillance (EHS)

Question 33

Elementary Surveillance information

APX-118

Answer 33

24-bit mode S address
Mode C altitude
Aircraft ID (call sign )

Question 34

Mode S EHS information

APX-118

Answer 34

ELS info
Mag. Heading
Indicated airspeed
Mach number
Vertical rate
Roll angle
Track angle
True track angle
Ground speed
Selected altitude

Question 35

Where is the mode S address stored?

Answer 35

CDU-7000 non volatile memory

Question 36

How is the source of altitude information for the transponder determined?

Answer 36

Determined by course selection on pilot EFDS display control panel.