Question Bank

1. The ILS glide path operates between

2. On an ILS ROD is function of

3. The outer marker of an ILS with a 3° glide slope is located 4.6NM from the threshold. Assuming a glide slope height of 50ft above the threshold, the approximate height of an aircraft passing the outer marker is

4. At 0430 an aircraft is in level cruise flight at groundspeed of 350 knots, at FL370, 165 nm from a VOR. It is required to descend at a mean rate of 1800 feet/ min, to be at FL 80 overhead the VOR. What is the latest time to commence descent, if the mean ground speed in the descent is to be 200 knots?

5. Inner marker transmits on 75MHz and has an aural frequency of

6. The horizontal deviation on the expanded ILS display represented by one dot is approximately

7. Which of the following is an ILS localiser frequency?

8. The sensitive area of an ILS is the area aircraft may not enter when

9. An aircraft is on an ILS 3 degree glide slope, which passes over the runway threshold at a height of 50 feet. The DME range is 18 nm from the threshold. What is the height above the runway threshold elevation? (Use the 1 in 60 rule and the approximation 6080 feet = 1 nautical mile)

10. The glide-path signals must be received to a range of 10 nm over a sector

11. Category II ILS provides accurate guidance to

12. The inner marker of an ILS installation identifies itself with

13. Every 10ktt decrease in groundspeed, on a 3°ILS glide path, will require an approximate

14. What is the colour sequence when passing over an Outer, Middle and Inner Marker beacon?

15. 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) _______

16. For a 2.7 degree glide path on a Category 1 ILS the vertical coverage is

17. The visual Indication of passing the outer marker is a ____ light with a series of ____ at 400 Hz

18. Convert 70 meters/ second into knots?

19. If there is a 15 knot increase in headwind by what amount must the rate of descent be changed in order to maintain a 3° glide slope?

20. An aircraft carrying out a 3° glide path ILS approach experiences a reduction in Ground speed from 150kt at the outer marker to 120kt over the threshold. The effect of this change in groundspeed on the aircraft's rate of descent will be a decrease of approximately

21. At 0422 an aircraft at FL370, GS 320kt, is on the direct track to VOR 'X' 185 NM distant. The aircraft is required to cross VOR 'X' at FL80. For a mean rate of descent of 1800 FT/MIN at a mean GS of 232 kt, the latest time at which to commence descent is?

22. The rate of descent in feet per minute, appropriate to a 3.2° ILS glide path at an approach groundspeed of 110 kts is

23. Aircraft height 2500 FT, ILS GP angle 3°. At what approximate distance from THR can you expect to capture the GP?

24. The upper limit of the vertical coverage of the localizer must be

25. Where, in relation to the runway, is the ILS locallser transmitting aerial normally situated?

26. Instrument Landing System (ILS) Glide Paths provide azimuth coverage (i) _____° each side of the localiser center line to a distance of (ii) ______ NM from the threshold

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

28. An aircraft flying down a 3° ILS glide slope is at 25 nm DME rom the threshold. Using the 1 in 60 rule and approximating 1 nm to 6000 ft, calculate the aircraft height above the runway threshold, assuming that the ILS glide path crosses the threshold at height of 50 ft?

29. The reason why pre take-off holding areas are sometimes further from the active runway when ILS Category II and III landing procedures are in progress than during good weather operations is

30. 850 FT/MIN equals?

31. On an ILS approach you receive more of the 90 Hz modulation than the 150 Hz modulation. The action you should take is

32. The rate of descent required to maintain a 3.25° glide slope at a groundspeed of 140kt is approximately

33. The amplitude modulation and the colour of an outer marker (OM) is

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

35. Assuming zero wind, what distance is covered by an aircraft descending 15000 FT with a TAS of 320 kt and maintaining a rate of descent of 3000 FT/MIN?

36. What will be the rate of descent when flying down a 7% glide slope, at a groundspeed of 250 knots?

37. What is the approximate angular coverage of reliable navigation information for a 3° ILS glide path out to a distance of 10NM?

38. What approximately rate of descent is required in order to maintain a 3° glide path at a groundspeed of 90kt?

39. In which frequency band does an ILS glide slope transmit?

40. A Category 1 Instrument Landing System (ILS) ground installation provides accurate guidance from coverage limit down to

41. An aircraft at FL370 is required to commence descent when 100 NM from a DME facility and to cross the station at FL120. If the mean GS during the descent is 396 kt, the minimum rate of descent required is approximately?

42. If there is a 12 knot increase in headwind by what amount must the rate of descent be changed in order to maintain a 3° glide slope?

43. A typical ILS glide path frequency, in MHz , is

44. When can an ILS back beam be received

45. The minimum angle at which a false glide path is likely to be encountered on a 3° glide path is

46. ILS is subject to false glide paths resulting from

47. A Cat III ILS glide path transmitter provides reliable guidance information down to

48. At what approximate distance from the threshold would an aircraft intercept the glide path if the aircraft height is 2500 feet, and the ILS glide path angle is 3° ?

49. At a distance of 20 NM from the localizer transmitter, the horizontal extent of the localizer coverage is

50. An aircraft tracking to intercept the Instrument Landing System (ILS) localiser inbound on the approach side, outside the published ILS coverage angle