ILS

Question 1

five dot display what does each of the dots on either side of the ILS localizer cockpit display represent

Answer 1

VOR with 5 dot display - Full scale deflection on VOR is 10 degrees @ 2 deg per dot / Full scale deflection on Localiser is 2.5 degrees @ 0.5 deg per dot

Question 2

ILS comprises of what 3 systems

Answer 2

Localiser Middle Marker and Glidepath

Question 3

ILS operates on what frequncy Range

Answer 3

LOC carrier frequencies range between 108.10 MHz and 111.95 MHz (with the 100 kHz first decimal digit always odd, so 108.10, 108.15, 108.30, etc., are LOC frequencies and are not used for any other purpose).

Question 4

Glide path Freg and Upper and lower signals (transmitted on Carrier)

Answer 4

UHF
90hz Upper
150 Hz Lower

Question 5

Localiser Frequency range and Signals

Answer 5

VHF 108.1 - 111.975
90HZ left
150HZ right

Question 6

Glide slope Calculations

Answer 6

120 knots/hr = 2nm/min. 2 nautical miles converted to feet = 12 152.23. Using Trigonometry: tan(3 deg) = VS/12 152.23 ft. Therefore the required vertical speed is: 636.87 ft/min

Question 7

The MIDDLE MARKER of an Instrument Landing System (ILS) facility is identified audibly and visually by a series of

Answer 7

alternate dots and dashes and an amber light flashing