ILS Approaches

Question 0

Cat 1 ILS approaches typically have what for DH and minimum visibility?

Answer 0

DH 200’

RVR 2400’ (1/2 mile)

Question 1

In addition to horizontal guidance, what makes an ILS approach a precision approach?

Answer 1

Vertical guidance

Question 2

Cat 2 and Cat 3 approaches require what?

Answer 2

Special ground and airborne equipment

Special pilot training and check ride

Question 3

A localizer gives what type of guidance?

Answer 3

Horizontal guidance

Question 4

A glide slope gives a pilot what type of guidance?

Answer 4

Vertical guidance

Question 5

Where are localizer transmitters located?

Answer 5

Departure end of the runway

1000’ from runway end

Question 6

What are the 2 modulating frequencies of the localizer beams?

Answer 6

150 Hz

90 Hz

Question 7

How wide are the localizer beams at full scale CDI deflection as they cross the threshold of the runway?

Answer 7

350’ from either side of the runway

Question 8

How sensitive is a localizer compared to a VOR?

Answer 8

4 times as sensitive

Question 9

Where are glide slope transmitter located?

Answer 9

Offset near the landing end of the runway

Question 10

What is a typical glide slope angle?

Answer 10

3 degrees

Question 11

What is the glide slope false lobes descent angle?

Answer 11

12 degrees

Question 12

What can a pilot do to avoid accidentally descending on the false lobes of the glide slope?

Answer 12

Always intercept the glide slope below the glide slope

Question 13

How wide are the glide slope beams at full scale CDI deflection?

Answer 13

0.7 degrees

Question 14

How far away from the transmitter can an aircraft expect to receive the glide slope beams?

Answer 14

10 nm

Question 15

How far down the runway is a glide slope transmitter usually installed?

Answer 15

Transmitted from TDZ

Offset 750-1250’

Question 16

Why are the ILS hold short lines farther away from a runway than the normal runway hold lines?

Answer 16

So you don’t block the glide slope beams

Question 17

What radio does a pilot use to tune in both the localizer and glide slope transmitters?

Answer 17

Nav radio

Question 18

Does a pilot need to listen to morse code and identify the localizer and glide slope transmitters?

Answer 18

Yes

One frequency tunes in both the localizer and the glide slope

Question 19

All ILS morse code identifiers start with what letter?

Answer 19

I

Question 20

Cat 1 ILS approaches usually have what 2 marker beacons?

Answer 20

Middle marker

Outer marker

Question 21

Marker beacons give the pilot a reference of what type of information?

Answer 21

Reference to distance from the runway

Question 22

What are the 2 types of indications a pilot will get when they fly over a marker beacon?

Answer 22

Lights

Tones in audio panel

Question 23

Can a pilot use a middle marker beacon to actually decide that they are at the DA?

Answer 23

No

Question 24

The outer marker beacon transmits what morse code sound and blinks what color light?

Answer 24

—- dashes

Blue

Question 25

How far away from the runway are outer marker beacons usually located?

Answer 25

4-7 nm

Question 26

Some ILS approaches use DME or VOR or LOM or ATC radar instead of having an outer marker T/F?

Answer 26

True

Question 27

The middle marker beacon transmits what morse code and blinks what color light?

Answer 27

.-.-. Dots and dashes

Orange

Question 28

Where are middle marker beacons usually located at a point where the aircraft is at what height above touchdown and at what distance from the runway?

Answer 28

200’ above touchdown zone

3500’ from runway threshold

Question 29

Some ILS approaches use an LOM or ATC radar instead of having a middle marker T/F?

Answer 29

True

Question 30

The inner marker beacon transmits what morse code sound and blinks what color light?

Answer 30

…. Dots

White

Question 31

Inner marker beacons are used on what Cat of ILS approach?

Answer 31

Cat 2

Cat 3

Question 32

A compass locator marker is really what type of transmitter?

Answer 32

Low powered NDB