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Module 11 > Nav Systems > Flashcards

Nav Systems Flashcards

1
Q

What are the 4 GPS devices?

A

-ILS
-GPS
-ADF
VOR

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2
Q

What’s used to run the nav systems?

A

INS & IRS

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3
Q

What is DME?

A

Distance Measuring Equipment

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4
Q

What do secondary radars measure?

A

Distance

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5
Q

How is a failure in the DME shown?

A

Failure flag or 4 red dashes to show its failed

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6
Q

What is IlS?

A

Instruments Loading System

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7
Q

How can ILS be broken down?

A

-marking beacon (distance from runway)
-glide slope(vertical commands)
-localiser (lateral commands)

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8
Q

On ILS what does 90 and 150 mean?

A

90 abouve
150 below

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9
Q

What are the 3 markers and their colours for a marker beacon?

A

-outer marker blue
-inner marker white
-middle marker amber

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10
Q

What must u not do to a marker beacon?

A

Do not tune

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11
Q

What’s the carrier frequency for a marker beacon?

A

75 MHz

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12
Q

What are some examples of primary radar?

A

-Weather radar
-Radio altimeter
-ATC primary surveillance radar

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13
Q

What are some examples of secondary radar?

A

ATC Air Traffic Control Corresponder
TCAS Traffic Alert & Collison Avoidance
DME Distance Measuring Equipment

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14
Q

What is the range for radar codes?

A

0-0-0-0 to 7-7-7-7

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15
Q

What mode radar is fitted to TCAS?

A

Mode S

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16
Q

What colour is a traffic advisory?

A

Amber

17
Q

What colour is a resolution advisory?

A

Red

18
Q

What altitudes is radionaltimiter used and why?

A

0-2500ft
Because it’s more accurate than barometric at low pressure

19
Q

What altitudes is radionaltimiter used and why?

A

0-2500ft
Because it’s more accurate than barometric at low pressure

20
Q

How many satelites are needed for GPS?

A

4 satellites needed

21
Q

What can GPs calculate?

A

Calculates latitude,longitude & altitude

22
Q

What is INS/IRS?

A

Inertial Navigation System
Inertial Reference System

23
Q

How many accelerometers are used for INS/IRS and why?

A

3
One for each axis

24
Q

How many LRGs are used for INS/IRS and why?

A

3
One for each axis

25
Q

What does single integration on INS/IRS find?

A

Speed

26
Q

What does double integration on INS/IRS find?

A

Distance

27
Q

What is EPGWS and GPWS and the differences?

A

Enhanced Proximity Ground Warning System

Proximity Ground Warning System

Enhanced gives terrain mapping

Standard=6 modes
Enhanced=7 modes

28
Q

How often does FMS update and why?

A

Every 28 days to improve performance and fuel economy

Module 11 (64 decks)

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