AR 13 - Radio Navigation Aids

Question 1

Review Questions

What does the “Alert” annunciator on the Waypoint Information from indicate?

Answer 1

90 secs to the next waypoint or 90 secs to an abeam position if off track

Question 2

What are the major components of ADF?

Answer 2

ADF receiver, antennae and a bearing indicator (RMI)

Question 3

What kind if NAVAIDs are used with the ADF system?

Answer 3

Non-Directional beacons

Question 4

The Automatic Radio Compass on the CT-142 uses which frequencies?

Answer 4

Low / medium

Question 5

The Automatic Radio Compass on the CT-142 has which type of antennae?

Answer 5

Directional and fixed

Question 6

The Automatic Radio Compass on the CT-142 receives signals from where? It indicates which type of continuous bearing to these transmitters?

Answer 6

NDB and commercial radio stations

Indicates Compass bearings

Question 7

Readings from the Automatic Radio Compass on the CT-142 must be corrected for what to give AC True bearings?

Answer 7

AC variation and deviation

Question 8

Because of it’s _______ band, the ADF is subject to interference.

Answer 8

Frequency

Question 9

What are some specific causes of the interference encountered by the ADF?

Answer 9

Atmospheric noise and thunderstorms

Ground wave may become contaminated due to sky-waves

AC electrical fields and structures also cause interference

Question 10

What is the accepted standard error for the ADF in good and poor conditions?

Answer 10

+/- 3° or +/- 30° in poor conditions

Question 11

What is the range of the ADF?

Answer 11

200 - 50 NM (decreases at night due to sky wave contamination)

Question 12

What is the name of the ADF on the CT-142? How many are there?

Answer 12

x2 King KDG 806 ADF

Question 13

What are the components of the King KDG 806?

Answer 13

Radio compass receiver
Control display unit (#1 pilot side #2 co-pilot side)
Antenna assembly
Bearing indicators (pilot, co-pilot and ACSO consoles)

Question 14

What are the Operating Freq Limits of the King KDG 806 ADF?

Answer 14

190.0 - 1799.0 KHz

Question 15

The ADF needle indicates what of the transmitter?

Answer 15

Relative bearing

Question 16

The RMI compass rose indicates what?

Answer 16

Compass bearing to the station.

Question 17

Regarding the ADF, absent of muted audio represents what?

Answer 17

The selected frequency is too weak for dependable navigation, or that the FMS is on AUX Mode

Question 18

VOR stands for what?

Answer 18

Very High Frequency Omni-directional Range.

Question 19

Why is it that VOR avoids weather interference more so than the ADF?

Answer 19

It uses higher frequencies

Question 20

The VOR can provide radials oriented to?

Answer 20

Magnetic, True or Grid North

Question 21

What are the frequencies for the VOR’s:

VHF
ILS Frequencies: Localizer and Glidescope

Answer 21

VHF 108.00 - 117.75 MHz

ILS Freq:

108. 10 - 111.95 Localizer (VHF)
109. 95 - 334.70 Glidescope (UHF)

Question 22

What are the principles of VOR Airbourne Reception?

Answer 22

Equipment on AC receives two 30 MHz signals from a VOR ground station

Measures phase difference
Converts phase difference to a radial which is displayed on the Remote Magnetic Indicator (RMI)

Question 23

To plot a VOR, the radial is plotted from the VOR with a protractor aligned to?

Answer 23

Station north, found in the GPH 205

Question 24

VORs are normally aligned to _______ north in the Southern Domestic Airspace and ____ north in the Northern Domestic Airspace.

Answer 24

Mag and True

Question 25

What is the theoretical accuracy of a VOR? What is the accepted accuracy at 402?

Answer 25

+/- 2 - 5° +/- 2.5°

Question 26

What kind of operation is a VOR?

Answer 26

LOS

Question 27

What side effects is VOR affected by?

Answer 27

Echoes from hills and buildings | Magnetic anomalies

Question 28

What is the cone of confusion for a VOR? What does it mean

Answer 28

80° 80° above the transmitter bearings are either unobtainable or unusable

Question 29

Describe the VOT (VHF Test)

Answer 29

Transmits a signal permitting inspection of VOR receiver without knowing your specific radial from the VOR

Question 30

Describe Tactical Air Navigation (TACAN)

Answer 30

Military, LOS radio nav aid Continuous range and bearing information Theoretically more accurate than either VOR or ADF

Question 31

What kind of calculations describe TACAN operation?

Answer 31

Radial (azimuth) calculation | DME (distance) calculation

Question 32

Regarding TACAN and DME capabilities, what frequency and operation does it use?

Answer 32

UHF & Range LOS

Question 33

Regarding TACAN and DME capabilities, how many channels can it use?

Answer 33

126 X mode and 126 Y mode channels

Question 34

Regarding TACAN and DME capabilities, what can the cone of confusion range from?

Answer 34

60 - 110° across depending on ground site

Question 35

Regarding TACAN and DME capabilities, what is its bearing and DME slant range accuracy?

Answer 35

Bearing accuracy: +/- 3/4 DME slant range accuracy +/- 1nm

Question 36

TACANs are normally aligned where in the Southern Domestic Airspace?

Answer 36

Mag north

Question 37

What is the name of the TACAN on the CT 142?

Answer 37

King KTU 709 TACAN

Question 38

How many TACAN systems are on the CT 142?

Answer 38

One

Question 39

What does the TACAN system comprise of?

Answer 39

Antenna (located on lower forward fuselage) TACAN system (located in second avionics rack) NAV/ TAC controller (located on the Pilot's side of the glare shield)

Question 40

What is a VORTAC?

Answer 40

A radio navigation beacon for aeronautical navigation which comprises of co-located VOR and TACAN beacons.

Question 41

True or false A pilot may navigate towards but not away from a radio navigation beacon along the intended route.

Answer 41

False, a pilot may navigate towards or away from a radio navigation

Question 42

If drift information is available, the pilot will apply the drift and _____ the navaid.

Answer 42

Track

Question 43

If no drift information is applied, the needle is placed on the nose and the aircraft is said to be ______ the navaid.

Answer 43

Homing

Question 44

Review Questions What must be applied to the COMPASS bearing to the a true bearing for ADF fixing?

Answer 44

The deviation of the associated RMI and the aircraft's local variation

Question 45

Review Questions What is the frequency range of the (ADF) King 806 ARC?

Answer 45

190.0 - 1799.0 KHz

Question 46

Review Questions What will happen is the VORs are not able to receive a signal (off, ILS too far form the station)

Answer 46

The needle parks at 3/9 o'clock position

Question 47

Review Questions How is DME calculated?

Answer 47

Measuring the time interval between interrogation and the response is converted to range (Go to PPT, write it down correctly)

Question 48

Review Questions How do you plot a radial from a VOR?

Answer 48

The radial is plotted from the VOR with a protractor lined to the station North (must be found in GPH 205)

Question 49

Review Questions What's the difference between tracking and homing a navaid?