Results
Q1. The function of a locator beacon in an ILS procedure
Is to provide a navigation aid that will clearly indicate that the aircraft is within the coverage of the ILS localizer and glide path
Q2. An aircraft carrying out an ILS approach is receiving more 90 Hz than 150 Hz modulation notes from both the localiser and glidepath transmitters. The ILS indication will show:
Fly right and fly down
Q3. The rate of descent required to maintain a 3.25° glide slope at a groundspeed of 140 kt is approximately:
800 FT/MIN
Q4. ILS is subject to false glide paths resulting from:
multiple lobes of radiation patterns in the vertical plane
Q5. Instrument Landing Systems (ILS) Glide Paths provide azimuth coverage (i) .º each side of the localiser centre-line to a distance of (ii) NM from the threshold.
(i) 8 (ii) 10
Q6. In an ILS system, the identification
Is transmitted in morse by the localizer transmitter with a tone of 1020 Hz
Q7. ILS Cat II will permit instrument approaches down to
DH 100 ft, RVR 350 m
Q8. Assuming a five dot display, what does each of the dots on either side of the ILS localizer cockpit display represent:
0.5 degrees
Q9. An aircraft tracking to intercept the Instrument Landing System (ILS) localiser inbound on the approach side, outside the published ILS coverage angle:
may receive false course indications
Q10. If the ILS monitoring equipment senses a shift or change outside set limits in the basic transmission
The transmissions on a Cat I ILS will be stopped within 6 seconds
Q11. The glide path transmitter operates on
40 frequencies from 329,15 MHz to 335,00 MHz
Q12. Flying a 3° glidepath ILS approach, at a ground speed of 100 Kt., the “rule of thumb” gives a required rate of descent of
500 ft/min
Q13. The ILS glidepath is 2.8°. At what altitude above the threshold level is the upper limit of the glide path coverage at a distance of 1,5 NM from the touchdown point?
745 feet
Q14. Every 10 kt decrease in groundspeed, on a 3° ILS glidepath, will require an approximate:
decrease in the aircraft’s rate of descent of 50 FT/MIN
Q15. Consider the following statements on ILS:
ILS is the primary precision approach facility for civil aviation
Q16. Which of the following is an ILS localiser frequency?
109.15 MHz
Q17. What is the approximate angular coverage of reliable navigation information for a 3° ILS glide path out to a distance of 10 NM?
1.35° above the horizontal to 5.25° above the horizontal and 8° each side of the localiser centreline
Q18. What approximate rate of descent is required in order to maintain a 3° glidepath at a groundspeed of 90 kt?
450 FT/MIN
Q19. The ILS glidepath transmitter is located
About 300 meters upwind from the threshold and about 150 meters from the centre line of the runway
Q20. The outer marker of an ILS with a 3° glide slope is located 4.6 NM from the threshold. Assuming a glide slope height of 50 FT above the threshold, the approximate height of an aircraft passing the outer marker is:
1450 FT
Q21. The MIDDLE MARKER of an Instrument Landing System (ILS) facility is identified audibly and visually by a series of:
alternate dots and dashes and an amber light flashing
Q22. 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)……….
(i) the same (ii) modulation frequencies
Q23. Scalloping of an ILS beam means
That the guidance beam direction varies from side to side of the intended approach path
Q24. There are four types of marker beacons, all transmitting on the same carrier frequency:
Airway marker (fan marker) Outer marker, Middle marker, Inner marker
Q25. Where, in relation to the runway, is the ILS localiser transmitting aerial normally situated?
On the non-approach end of the runway about 300 m from the runway on the extended centreline
Q26. Outer marker transmits on 75 MHz and has an aural frequency of:
400 Hz
Q27. At a distance of 20 NM from the localizer transmitter, the horizontal extent of the localizer coverage is
+/-10° from the runway extended centre line
Q28. The OUTER MARKER of an Instrument Landing System (ILS) facility transmits on a frequency of:
75 MHz and is modulated by morse at two dashes per second
Q29. Flying an ILS approach, the middle marker is positioned so as to be passed
At about 200 ft AAL
Q30. What is the colour sequence when passing over an Outer, Middle and Inner Marker beacon?
blue amber – white
Q31. The amplitude modulation and the colour of an outer marker (OM) is:
400 Hz, blue
Q32. In which frequency band does an ILS glide slope transmit?
UHF
Q33. Consider the following statements on ILS back beam approach:
All 3 statements are correct
Q34. A Category 1 Instrument Landing System (ILS) ground installation provides accurate guidance from coverage limit down to:
200 feet above the runway threshold
Q35. A Cat III ILS glidepath transmitter provides reliable guidance information down to:
the surface of the runway
Q36. The middle marker is identified by
Audible alternate dots and dashes with tone 1300 Hz and an amber light
Q37. What approximate rate of descent is required in order to maintain a 3° glide path at a groundspeed of 120 kt?
600 FT/MIN
Q38. The reason why pre take-off holding areas are sometimes further from the active runway when ILS Category 2 and 3 landing procedures are in progress than during good weather operations is:
aircraft manoeuvring near the runway may disturb guidance signals
Q39. The heading rose of an HSI is frozen on 200°. Lined up on the ILS of runway 25, the localizer needle will be:
centred
Q40. Which of the_following frequencies are used by ILS?
a and b above
Q41. An aircraft carrying out a 3° glidepath ILS approach experiences a reduction in groundspeed from 150 kt at the outer marker to 120 kt over the threshold. The effect of this change in groundspeed on the aircraft’s rate of descent will be a decrease of approximately:
150 FT/MIN
