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AMT 210 Airframe Electrical > Navigation > Flashcards

Navigation Flashcards

1
Q

VHF

A

Very High Frequency

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2
Q

HF

A

High Frequency

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3
Q

ACARS

A

Aircraft Communication Addressing and Reporting System

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4
Q

ELT

A

Emergency Locator Transmitter

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5
Q

ADF

A

Automatic Direction Finder

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6
Q

VOR

A

VHF Omnidirectional Range

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7
Q

DME

A

Distance Measuring Equipment

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8
Q

ILS

A

Instrument Landing System

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9
Q

GPS

A

Global Positioning System

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10
Q

TCAS

A

Traffic Collision Avoidance System

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11
Q

GPWS

A

Ground Proximity Warning System

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12
Q

RA

A

Radio Altimeter

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13
Q

ADS-B

A

Automatic Dependent Surveillance-Brodcast

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14
Q

How does ADF operate?

A

Uses a ground signal transmitted from a NDB.

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15
Q

Why does ADF use a loop and sense antenna?

A

To decipher the fields to indicate the direction of transmission

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16
Q

How does an ADF move the needle?

A

It uses a rectified DC signal to drive a motor that moves the needle known as syncro

17
Q

VOR signal ground unit due north?

A

Signals in phase 0° magnetic radial

18
Q

VOR signal ground unit due south?

A

Signals out of phase 180° magnetic radial

19
Q

How does the DME signal differ between aircraft?

A

A string of integration pulses.

20
Q

What frequencies does a DME use?

A

UHF

21
Q

Why is ILS used?

A

Poor visibility landing

22
Q

How does a localizer work?

A

It sends out two different signals for left and right and the middle is a combination of the two.

23
Q

What frequency does a localizer use?

A

VHF

24
Q

What frequency does a glideslope use?

A

UHF

25
Q

How many GPS satellites do you need to determine altitude?

A

4

26
Q

How do you increase the accuracy of GPS?

A

With wide area augmentation system (WAAS)

27
Q

What doe Mode C in a transponder provide?

A

Pressure altitude of the aircraft.

28
Q

What is TCAS I?

A

A Traffic Advisory (TA) issued to assist the pilot with visual acquisition

29
Q

What is TCAS II?

A

A Resolution Advisory (RA) this tell each aircraft what action to take to avoid a collision.

30
Q

How is an ELT activated?

A

By excessive G-forces experienced during a crash

31
Q

What are the two types of ELTs?

A

Analog and digital, digital has a higher frequency and strong signal.

32
Q

How often should ELT batteries be inspected?

A

Within 12 months of the previous inspection

33
Q

What frequency does ADF use?

A

MF

34
Q

What frequency doe DME use?

A

UHF

AMT 210 Airframe Electrical (9 decks)

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