ILS (INSTRUMENT LANDING SYSTEM): DGCA Air Navigation questions

Question 1

In full ILS system which marker is optional?

Accepted Answer

Inner

Answer

Middle

Answer

Outer

Question 2

RVR is

Accepted Answer

Horizontal visibility along RWY centre line.

Answer

Slant visibility along RWY app. lights

Answer

Horizontal visibility along RWY PAPI lights

Question 3

On an ILS ROD is function of.

Accepted Answer

G/S

Answer

IAS

Answer

EAS

Question 4

When can an ILS back beam be received:

Accepted Answer

When flying in the area behind the localiser aerial.

Answer

Never.

Answer

When flying in the area forward the localiser aerial

Question 5

Where, in relation to the runway, is the ILS localiser transmitting aerial normally situated?

Accepted Answer

On the non-approach end of the runway about 300m from the runway on the extended centerline

Answer

At the non-approach end about 150m to one side of the runway and 300m along the extended centerline

Answer

At the approach end about 150m to one side of the runway and 300m from touchdown

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