ILS

Question 1

ILS

Answer 1

Instrument landing system

Question 2

equipment

Answer 2

LOCALIZER VHF
MARKERS VHF
GLIDESLOPE UHF

Question 3

Localizer

Answer 3

trasmit on 108 to 111.95 only odds number
amplitude modulated horizontal polarized, automatic monitor and A8W
antenna 300 m from end of runway

Question 4

principle of operation

Answer 4

depth of modulation
Ampl signal/ carrior wave it use a modulaed frequency of 90 Hz for left and above
150 Hz for right and below, when the depths are equal it means the a/c is on the center line

Question 5

localizer range

Answer 5

17 NM to 35°
25 NM to 10°
vertical coverago 0° to +7°
full scale deflection 2.5°

Question 6

localizer back beam

Answer 6

can be use to non precisional approach
no glide path or marker
used for missed approach

Question 7

outer marker

Answer 7

blue light dash continous for 2 seconds frequency 400 Hz trasmission 75 MHz

Question 8

middle marker

Answer 8

amber light 2 sec of dash alternate with 6 seconds of dots DH for CAY 1 200 ft
0.4 NM

Question 9

Inner Marker

Answer 9

white line 6 seconds of dot

frequency 3000 HZ transmit on 75 MHz… cat 2 and 3

Question 10

Glideslope

Answer 10

vertical localizer used the same principle of the localizer for the 90 and 150

Question 11

glide sloipe frequency

Answer 11

UHF 329 MHz to 335 MHz pareid with localizer frequency
amplitude modulated horizontal polarized
automatic monitor
A8W

Question 12

Range

Answer 12

orizontal ange +-8° per 10 nm

vertical 1.75 - 0.45 angle