Tag Archives: ils

The OUTER MARKER of an Instrument Landing System (ILS) facility transmits on a frequency of:

A: 75 MHz and is modulated by morse at two dashes per second
B: 200 MHz and is modulated by alternate dot/dash in morse
C: 75 MHz and is modulated by alternate dot/dash in morse
D: 300 MHz and is modulated by morse at two dashes per second

 

 

 

 

 

 

 

 

Answer: A

Every 10 kt decrease in groundspeed, on a 3(degrees) ILS glidepath, will require an approximate:

A: decrease in the aircraft’s rate of descent of 50 FT/MIN
B: increase in the aircraft’s rate of descent of 50 FT/MIN
C: decrease in the aircraft’s rate of descent of 100 FT/MIN
D: increase in the aircraft’s rate of descent of 100 FT/MIN

 

 

 

 

 

 

 

 

Answer: A

The principle of operation of an ILS localiser transmitter is based on two overlapping lobes that are transmitted on (i)………. frequencies and carry different (ii)……….

A: (i) different (ii) modulation frequencies
B: (i) the same (ii) phases
C: (i) the same (ii) modulation frequencies
D: (i) different (ii) phases

 

 

 

 

 

 

 

 

Answer: C

During an ILS procedure, if the reported RVR/visibility is less than the applicable minima, the approach shall not be continued beyond:

A: the FAF, or 1500 ft above the aerodrome / heliport if there is no FAF.
B: the outer marker or equivalent, or 1000 ft above the aerodrome / heliport if there is no outer marker or equivalent.
C: the middle marker, or 500 ft above the aerodrome / heliport if there is no middle marker.
D: the glide slope intersection.

 

 

 

 

 

 

 

 

Answer: B