NAV Systems Flashcards
What do the angular accelerometers measure?
Degree of roll and rate of change
How the aircraft twists in space
Where is the ARN-153 TACAN R/T located?
Underneath the companionway
How many antennas are associated with the ARN-147 VOR/ILS/MB system?
3
How many channels does the ARN-153 TACAN have?
252 (126-x and 126-y)
What are SA/AS codes?
Selective availability and anti spoofing
How would you select the SA/AS codes for use on the GPS?
Changing “MIXED” to “ALL Y”
Where is the ARN-153 TACAN R/T antenna located?
Underside of the aircraft AFT and right of the boomerang (VOR/ILS) antenna
Where is the ARN-149 ADF antenna located?
Underside of the aircraft, centered, STA 190
Where are the EGIs located?
Bottom of the avionics closet
What information is provided by the EGIs?
4 things
Heading, velocity, position, and estimate error
How many linear and angular accelerometers are associated with each Inertial Navigation System?
-3 angular and 3 linear
How many navigation solutions are provided by each EGI?
3
- INS
- GPS
- Blended
What information does the TACAN radio provide?
5 things
- slant range distance
- relative bearing
- course deviation
- to/from
- audio identification information
What is the operating range to an air-to-ground TACAN station for the TACAN radio?
390NM
What is the operating range for an air-to-air TACAN station for the TACAN radio
200NM
Name 4 benefits of using a Ring Laser Gyro for the INU system.
- virtually indestructible
- no moving parts
- doesn’t rely on external sources for information
- immune to jamming/deception
What are the four modes the TACAN can operate in?
R, TR, AAR, AATR
The DH (decision height) field value on the VOR/ILS Control page is in MSL or AGL?
MSL
What are the three alignment modes that can be selected to initialize the inertial navigation units (INUs)?
GC ALN
SH ALN
SHIP
What four items of information are available on the RUNWAY DATA page on the CDU?
- RWY Designation
- RWY length and width
- RWY TDZE
How many ADF Presets are available?
6
