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Aircraft Systems > AR 13 - Radio Navigation Aids > Flashcards

AR 13 - Radio Navigation Aids Flashcards

1
Q

Review Questions

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

A

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

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2
Q

What are the major components of ADF?

A

ADF receiver, antennae and a bearing indicator (RMI)

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3
Q

What kind if NAVAIDs are used with the ADF system?

A

Non-Directional beacons

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4
Q

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

A

Low / medium

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5
Q

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

A

Directional and fixed

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6
Q

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

A

NDB and commercial radio stations

Indicates Compass bearings

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7
Q

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

A

AC variation and deviation

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8
Q

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

A

Frequency

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9
Q

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

A

Atmospheric noise and thunderstorms

Ground wave may become contaminated due to sky-waves

AC electrical fields and structures also cause interference

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10
Q

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

A

+/- 3° or +/- 30° in poor conditions

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11
Q

What is the range of the ADF?

A

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

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12
Q

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

A

x2 King KDG 806 ADF

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13
Q

What are the components of the King KDG 806?

A

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

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14
Q

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

A

190.0 - 1799.0 KHz

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15
Q

The ADF needle indicates what of the transmitter?

A

Relative bearing

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16
Q

The RMI compass rose indicates what?

A

Compass bearing to the station.

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17
Q

Regarding the ADF, absent of muted audio represents what?

A

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

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18
Q

VOR stands for what?

A

Very High Frequency Omni-directional Range.

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19
Q

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

A

It uses higher frequencies

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20
Q

The VOR can provide radials oriented to?

A

Magnetic, True or Grid North

21
Q

What are the frequencies for the VOR’s:

VHF
ILS Frequencies: Localizer and Glidescope

A

VHF 108.00 - 117.75 MHz

ILS Freq:

  1. 10 - 111.95 Localizer (VHF)
  2. 95 - 334.70 Glidescope (UHF)
22
Q

What are the principles of VOR Airbourne Reception?

A

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)

23
Q

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

A

Station north, found in the GPH 205

24
Q

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

A

Mag and True

25
Q

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

A

+/- 2 - 5°

+/- 2.5°

26
Q

What kind of operation is a VOR?

A

LOS

27
Q

What side effects is VOR affected by?

A

Echoes from hills and buildings

Magnetic anomalies

28
Q

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

A

80°

80° above the transmitter bearings are either unobtainable or unusable

29
Q

Describe the VOT (VHF Test)

A

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

30
Q

Describe Tactical Air Navigation (TACAN)

A

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

31
Q

What kind of calculations describe TACAN operation?

A

Radial (azimuth) calculation

DME (distance) calculation

32
Q

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

A

UHF & Range LOS

33
Q

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

A

126 X mode and 126 Y mode channels

34
Q

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

A

60 - 110° across depending on ground site

35
Q

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

A

Bearing accuracy: +/- 3/4

DME slant range accuracy +/- 1nm

36
Q

TACANs are normally aligned where in the Southern Domestic Airspace?

A

Mag north

37
Q

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

A

King KTU 709 TACAN

38
Q

How many TACAN systems are on the CT 142?

A

One

39
Q

What does the TACAN system comprise of?

A

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)

40
Q

What is a VORTAC?

A

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

41
Q

True or false

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

A

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

42
Q

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

A

Track

43
Q

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

A

Homing

44
Q

Review Questions

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

A

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

45
Q

Review Questions

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

A

190.0 - 1799.0 KHz

46
Q

Review Questions

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

A

The needle parks at 3/9 o’clock position

47
Q

Review Questions

How is DME calculated?

A

Measuring the time interval between interrogation and the response is converted to range

(Go to PPT, write it down correctly)

48
Q

Review Questions

How do you plot a radial from a VOR?

A

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

49
Q

Review Questions

What’s the difference between tracking and homing a navaid?

A

Aircraft Systems (19 decks)

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