NAV Systems

Question 1

Where is the ARN-153 TACAN R/T located?

Answer 1

Underneath the companionway

Question 2

How many antennas are associated with the ARN-147 VOR/ILS/MB system?

Answer 2

3

Question 3

How many channels does the ARN-153 TACAN have?

Answer 3

252 (126-x and 126-y)

Question 4

What are SA/AS codes?

Answer 4

Selective availability and anti spoofing

Question 5

How would you select the SA/AS codes for use on the GPS?

Answer 5

Changing “MIXED” to “ALL Y”

Question 6

Where is the ARN-153 TACAN R/T antenna located?

Answer 6

Underside of the aircraft AFT and right of the boomerang (VOR/ILS) antenna

Question 7

Where is the ARN-149 ADF antenna located?

Answer 7

Underside of the aircraft, centered, STA 190

Question 8

Where are the EGIs located?

Answer 8

Bottom of the avionics closet

Question 9

What information is provided by the EGIs?
(4 things)

Answer 9

Heading, velocity, position, and estimate error

Question 10

How many linear and angular accelerometers are associated with each Inertial Navigation System?

Answer 10

-3 angular and 3 linear

Question 11

What information does the TACAN radio provide?
(5 things)

Answer 11

-slant range distance
- relative bearing
- course deviation
-to/from
-audio identification information

Question 12

What is the operating range to an air-to-ground TACAN station for the TACAN radio?

Answer 12

390NM

Question 13

What is the operating range for an air-to-air TACAN station for the TACAN radio

Answer 13

200NM

Question 14

What are the four modes the TACAN can operate in?

Answer 14

R, TR, AAR, AATR

Question 15

The DH (decision height) field value on the VOR/ILS Control page is in MSL or AGL?

Answer 15

MSL

Question 16

What are the three alignment modes that can be selected to initialize the inertial navigation units (INUs)?

Answer 16

GC ALN
SH ALN
SHIP

Question 17

What four items of information are available on the RUNWAY DATA page on the CDU?

Answer 17

-RWY Designation
-RWY length and width
-RWY TDZE

Question 18

How many ADF Presets are available?

Answer 18

6

Question 19

What CDU function key is used to access NAV RADIOS page

Answer 19

CNI

Question 20

The VOR can be manually tuned by entering the new frequency in the scratchpad and selecting what key

Answer 20

RS1

Question 21

What is the default alignment mode for the INU’s

Answer 21

GC ALN

Question 22

The last VOR frequency can be recalled by entering zero in the scratchpad and selecting what key

Answer 22

RS1

Question 23

What is the maximum number of Data Search Items that can be displayed on the map at one time

Answer 23

20

Question 24

Which TACAN mode displays bearing and DME from a ground TACAN station

Answer 24

TR

Question 25

Which TACAN mode displays distance from another aircraft

Answer 25

AATR

Question 26

What CDU page is accessed to initialize the system

Answer 26

Start Page 2/2

Question 27

With the TACAN in AATR Mode, what info will be received from an interrogated CH-47F

Answer 27

Distance only

Question 28

What CDU page is used to change satellite constellation type between Mixed and All Y for GPS

Answer 28

GPS 1 (2) Navigation Page

Question 29

Which CDU function key is selected to perform a search for closest airports to current position

Answer 29

Data Search

Question 30

When tuning the VOR radio, what indication on the MFD does the pilot receive

Answer 30

Searching Annunciator

Question 31

To recall the last manually tuned VOR freq you must enter a 0 and select which bezel key

Answer 31

LS1

Question 32

On the Runway Data page, what key puts the position of the runway approach end into the scratchpad

Answer 32

LS

Question 33

VOR Freq range

Answer 33

108.00-117.95

Question 34

ALL Y protects against what

Answer 34

spoofing