RAD 09 – Instrument Landing System (ILS) – LMS

Results

Q1. *Which answer states the typical distances along the centreline of the runway of the various ILS components?

Localiser transmitter 100 meters behind end of runway. Glide Path transmitter X 300 meters behind the threshold. middle marker 1000 meters from the threshold. outer marker 4nm from the threshold

Localiser transmitter 300 meters behind end of runway. Glide Path transmitter 300 meters behind the threshold. Middle marker 1000 meters from the threshold. Outer marker 4 nm from the threshold

Localiser transmitter 100 meters behind end of runway. Glide Path transmitter 100 meters behind the threshold. Middle marker 1.5 nm from the threshold. Outer markeer 10 nm from the threshold

Localiser transmitter 300 meters behind end of runway. Glide Path transmitter 300 meters behind the threshold. Middle marker 1.5 nm from the threshold. Outer marker 10 nm from the threshold

Localiser transmitter 300 meters behind end of runway. Glide Path transmitter 300 meters behind the threshold. Middle marker 1000 meters from the threshold. Outer marker 4 nm from the threshold

Q2. #False beams on the ILS glide path are?

Only found above the correct glide slope

Only found if flying the back beam ILS approach

Only found below the correct glide slope

Only found if more than 10 degrees left or right of localiser centerline

Only found above the correct glide slope

Q3. #The coverage of an ILS localizer extends to…….. either side of the on-course line out to a range of………. NM.

10° , 35

35° , 17

25° , 25

35° , 10

$35^{circ}$ 17

Q4. The ILS marker with an aural frequency of 400 Hz is?

Inner marker

Locator

Outer marker

Middle marker

Outer marker

Q5. The transmission of the glide slope beacon is characterized by?

300 to 3000 Hz Amplitude Modulation fro the ATIS

UHF carrier frequency with a possible "voice ident"

UHF frequency with a minimum range of 10 nm

VHF frequency modulated with a 90 Hz AM and 150 Hz AM navigation signal

UHF frequency with a minimum range of 10 nm

Q6. *Where, in relation to the runway, is the ILS localiser transmitting aerial normally situated?

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

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

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

At the approach end of the runway about 300 m from touchdown on the Centreline

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

Q7. #An aircraft carrying out an ILS approach is receiving more 90 Hz than 150 Hz modulation notes from both the localiser and glide path transmitters. The ILS indication will show:

Fly left and fly up

Fly right and fly up

Fly right and fly down

Fly left and fly down

Fly right and fly down

Q8. In an ILS system, concerning the glide path principle of operation, the difference in depth of modulation (DDM) 1. Decrease with angular displacement below the glide path 2. Increases with angular displacement above the glide path 3. Decreases with angular displacement above the glide path 4. Increase with angular displacement below the glide path

2 and 3

2 and 4

1 and 4

1 and 3

2 and 4

Q9. #The MIDDLE MARKER of an Instrument Landing System (ILS) facility is identified audibly and visually by a series of:

Dots and a white light flashing

Alternate dots and dashes and an amber light flashing

Dashes and an amber light flashing

Two dashes per second and a blue light flashing

Alternate dots and dashes and an amber light flashing

Q10. Which of the following correctly describes the Instrument Landing System (ILS) localiser radiation pattern?

Two overlapping lobes on different radio carrier frequencies but with the same modulation

A pencil beam comprising a series of smaller beams each carrying different modulation

Two overlapping lobes on the same UHF carrier frequency

Two overlapping lobes on the same VHF carrier frequency

Q11. **Regarding ILS which of the following is true?

The glide path transmitter is located 300m from the departure end of the runway

All markers transmit at 75 MHz

The localiser part of the frequency band is shared with the DME

The DME paired with the ILS channels are usually zero referenced next to the departure end of the runway

All markers transmit at 75 MHz

Q12. *An aircraft tracking to intercept the ILS localizer inbound on the approach side but outside the published coverage angle:

will not normally receive signals

will receive signals without coding

will receive false on-course or reverse sense signals

can expect signals to give correct indications

When an aircraft flies outside the protected ILS coverage area, the ILS signals are no longer monitored or guaranteed to be accurate.

In these areas, the receiver may pick up:

Direct signals from the ILS transmitter.
Reflected signals from buildings, hills, terrain, or other obstacles.

These unwanted signals can confuse the aircraft’s receiver and cause the Course Deviation Indicator (CDI) to show incorrect information.

As a result, the pilot may receive:

False on-course indications (showing the aircraft is on the correct path when it is not), or
Reverse-sense indications (the CDI moves in the opposite direction from what is expected).

Therefore, outside the published ILS coverage area, CDI indications should not be considered reliable.

Answer: Will receive false on-course or reverse-sense signals.

Q13. Every 10 kt decrease in groundspeed, on a 3 ILS glidepath, will require an approximate:

Decrease in the aircraft's rate of descent of 100 FT/MN

Decrease in the aircraft's rate of descent of 50 FT/MIN

Increase in the aircraft's rate of descent of 50 FT/MIN

Increase in the aircraft's rate of descent of 100 FT/MIN

Decrease in the aircraft’s rate of descent of 50 FT/MIN

Q14. Which of the following is an ILS localiser frequency?

109.15 MHz

110.20 MHz

112.10 MHz

108.25 MHz

109.15 MHz

Q15. “Beam bends” in the ILS approach path are?

Slight curves that can be followed by large aircraft

Curves in the normal approach because of noise abatement

Curves in the glide path that are visible on the indicator, but change too fast to be followed by large aircraft

Curved approaches made with the aid of the instrument landing system

Slight curves that can be followed by large aircraft

Q16. The basic principle of operation of the ILS is the difference in depth of modulation (DDM) between the two lobes. 1. If the aircraft strays right, the higher tone lobe will be received at a higher intensity than the lower tone lobe 2. A DDM of zero indicates the exact runway centerline 3. The depth of modulation increases away from the centerline 4. A DDM of zero indicates a balance between modulations The combination that regroups all the correct statements is?

2, 3 and 4

1 and 3

2 and 3

1, 2, 3 and 4

Q17. According to the ILS coverage areas as defined in ICAO Annex 10, in which of the following situations will the pilot be guaranteed a reliable signal from the localiser?

27 nm from touchdown inbound and 8 degrees displaced from the localiser centreline

10 nm from touchdown inbound and 38 degrees displaced from the localiser centerline

19 nm from touchdown inbound and 9 degrees displaced from the localiser centerline

20 nm from touchdown inbound and 35 degrees displaced from the localiser centerline

19 nm from touchdown inbound and 9 degrees displaced from the localiser centerline

Q18. **The audio frequency modulation of the middle marker shall be keyed a follows?

6 dots per second continuously

3 dashes, 3 dots, and 3 dashes per second continuously

2 dashes per second continuously

A continuous series of alternate dots and dashes, the dashes keyed at a rate of 2 dashes per second, and the dots keyed at a rate of 6 dots per second

A continuous series of alternate dots and dashes, the dashes keyed at a rate of 2 dashes per second, and the dots keyed at a rate of 6 dots per second. remember: outer – dash – 400 Hz middle – alternate dot and dash – 1300 Hz inner – dot – 3000 Hx

Q19. *The heading rose of an HSI is frozen on 200 degree, Lined up on the ILS of runway 25, the localizer needle will be?

Right of centre

Centred

Centred with the 'fail' flag showing

Left of centre

Centred , When HSI looses heading sensing ability it will work as CDI. so when the aircraft is lined up it needle will be centralised.

Q20. Assuming a five dot display on either side of the ILS localiser cockpit display. What is the angular displacement of the aircraft from the localiser centerline when the CDI is deflected 2 dots to the right?

2.0 degrees to the left

1.0 degrees to the right

2.0 degrees to the right

1.0 degrees to the left

Q21. ** 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:

To increases aircraft separation in very reduced visibility conditions

To increase distance from the runway during offset approach operations

Aircraft manoeuvring near the runway may disturb guidance signals

Heavy precipitation may disturb guidance signals

Aircraft manoeuvring near the runway may disturb guidance signals

Q22. *An aircraft’s Instrument Landing System glide slope and localizer receivers are receiving predominant 90 Hz modulated signals. If the aircraft is within the coverage of the ILS, QDM of 264°, it is:

north of the localizer and above the glide slope

north of the localizer and below the glide slope

south of the localizer and above the glide slope

south of the localizer and below the glide slope

south of the localizer and above the glide slope

Q23. ## The three different markers can be used in the ILS to determine the distance to the ILS touchdown point of the runway as follows?

The middle marker indicates the position for the decision for a missed approach during a CAT-I approach due to bad visibility

The markers are only important in the situation when glide path transmission has ceased

The outer marker indicates the position where normally the descent has to commence

The inner marker warns the pilot of the last chance to commence the missed approach procedure

The middle marker indicates the position for the decision for a missed approach during a CAT-I approach due to bad visibility

Q24. In an ILS, concerning the glide path principle of operation, the difference in depth of modulation (DDM) will?

Increase with displacement above or below the glide path

Decrease with displacement above or below the glide path

Increase from centre position to half full scale of the needle of the indicator and decrease until full scale of the needle

Increase with above displacement from the glide path, and decrease with displacement below the glide path

Increase with displacement above or below the glide path

Q25. #The amplitude modulation and the colour of an outer marker (OM) is:

3000 Hz, blue

400 Hz, blue

1300 Hz, blue

400 Hz, amber

400 Hz, blue

Q26. Which of the following list use the VHF band? 1. Locator 2. Localizer 3. Outer Marker 4. Glide Path The combination regrouping all the correct statements is?

1, 2, 3 and 4

2 and 4

1 and 3

2 and 3

Q27. # The ILS receiver of an aircraft on approach and flying on the right of the exact runway centreline will receive?

The left lobe modulation only

More 150 Hz localiser signal than the 90 Hz localiser signal

A modulated signal and will shift the localiser needle to the right according to the magnitude of the difference between the two amplitudes

The modulation from both lobes at equal amplitude

More 150 Hz localiser signal than the 90 Hz localiser signal

Q28. *The visual and aural indications obtained when overflying an ILS middle marker are:

continuous high-pitched dots with synchronized amber light

one letter in Morse with synchronized white light

continuous low-pitched dashes with synchronized blue light

alternating medium pitch dots and dashes with amber light

Q29. Which of these ILS indicators shows an aircraft on final approach left of the centre line and at maximum safe deviation below the glide path? (Visual Q.)

Q30. #ILS produces?

A 90 Hz lobe and a 150 Hz lobe which are amplitude modulated by the VHF frequency of the ILS

A radiation pattern which is amplitude modulated by the VHF frequency of the ILS

A radiation pattern which is amplitude modulated by a 90 Hz and a 150 Hz signal

Two lobes modulated in frequency by 90 Hz and 150 Hz signals

A radiation pattern which is amplitude modulated by a 90 Hz and a 150 Hz signal

Q31. What is the effect of FM broadcast stations that transmit on frequencies just below 108 MHz on the performance of ILS?

These transmissions may activate the FM immune filter which results in the appearance of the localiser and glide path failure flag

These transmissions may interfere with the ILS localiser signal which may lead to erroneous deviation indications

These transmissions may activate the FM immune filter which results in the appearance of the localiser failure flag

These transmissions may interfere with the ILS localiser and glide path signal which may lead to erroneous deviation indications

These transmissions may interfere with the ILS localiser signal which may lead to erroneous deviation indications.FM entertainment broadcast will only interfere with LOC signal transmitting near 108 Mhz. will not interference glide path transmission — UHF band

Q32. **A Cat III ILS glide path transmitter provides reliable guidance information down to:

A maximum height of 200 ft above the runway

A maximum height of 100 ft above the runway

The surface of the runway

A maximum height of 50 ft above the runway

The surface of the runway

Q33. A category II ILS installation encountered in the UK:

has a false glide path that is exactly twice the true glide path angle

provides accurate guidance down to 50' above the horizontal plane containing the runway threshold

has a steep glide path, normally 7.5°

provides accurate guidance down to the runway and along the runway after landing

provides accurate guidance down to 50′ above the horizontal plane containing the runway threshold

Q34. *An aircraft’s Instrument Landing System glide slope and localizer receivers are receiving predominant 150 Hz modulated signals. If the aircraft is within the coverage of the ILS, QDM of 270°, it is:

north of the localizer and below the glide slope

south of the localizer and below the glide slope

north of the localizer and above the glide slope

south of the localizer and above the glide slope

north of the localizer and below the glide slope

Q35. **** A VOR is situated at the far end of the runway on which an aircraft is making an ILS approach. Nav 1 is switched to the localiser frequency and Nav 2 to the VOR frequency. At the moment that the needle of #1 indicator reaches the outer dot the deflection needle of #2 indicator will be at?

The outer dot

Approximately a three quarters of the scale

Approximately a quarter of the scale

Approximately a halfway the scale

Approximately a quarter of the scale

Q36. #Instrument Landing Systems (ILS) Glide Paths provide azimuth coverage (i) ………………degree each side of the localiser centre-line to a distance of (ii). ………….NM from the threshold.

(i) 35; (ii) 25

(i) 8; (ii) 10

(i) 5; (ii) 8

(i) 25; (ii) 17

(i) 8; (ii) 10

Q37. *ILS is subject to false glide paths resulting from:

Ground returns ahead of the antennas

Spurious signals reflected by nearby obstacles

Multiple lobes of radiation patterns in the vertical plane

Back-scattering of antennas

Multiple lobes of radiation patterns in the vertical plane

Q38. An ILS receiver?

Measures the phase difference of the transmitted signals

Measures the difference in depth of modulation of the transmitted signals

Measures the difference in frequency of modulation of the transmitted signals

Measures the phase rotation of the two transmitted signals

Measures the difference in depth of modulation of the transmitted signals

Q39. **The ILS receiver of an aircraft on approach and flying on the glide path will receive?

The modulation from both lobes at equal depth

The maximum magnitude of the difference between the two amplitudes

The same modulation frequency signal from both lobes with the maximum of magnitude

No modulated signal because the left and right lobes cancel each other along the centreline

The modulation from both lobes at equal depth.DDM – zero

Q40. *An aircraft tracking to intercept the Instrument Landing System (ILS) localiser inbound on the approach side, outside the published ILS coverage angle:

Can expect signals to give correct indications

May receive false course indications

Will not normally receive signals

Will receive signals without identification coding

May receive false course indications

Q41. #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) phases

(i) the same (ii) modulation frequencies

(i) different (ii) modulation frequencies

(i) different (ii) phases

(i) the same (ii) modulation frequencies

Q42. ***According to ICAO 8168, what is regarded as the maximum safe deviation below the glide path during ILS approaches?

One quarter sale deflection

Full scale deflection

Three quarters scale deflection

Half scale deflection

Q43. **The back course of an ILS may give?

Non-precision approach guidance for the main approach runway

Non-precision approach guidance for the reciprocal of the main approach runway

Precision approach guidance for the reciprocal of the main approach runway

Precision approach guidance for the main approach runway

Non-precision approach guidance for the reciprocal of the main approach runway

Q44. *A Category 1 Instrument Landing System (ILS) ground installation provides accurate guidance from coverage limit down to:

50 feet above ILS reference point

200 feet above the inner marker

200 feet above the runway threshold

Runway surface

200 feet above the runway threshold

Q45. On final on ILS approach, at 0.6 nm from the threshold, which marker are you likely to hear?

The inner marker (if available)

The middle marker

NO markers can be located at this distance

The outer marker

The middle marker

Q46. On final on an ILS approach, you are flying overhead the outer marker. You can expect to be at?

4 nm from the threshold

25 nm from the threshold

1 nm from the threshold

10 nm from the threshold

4 nm from the threshold

Q47. #What is the approximate angular coverage of reliable navigation information for a 3 degree glide path out to a minimum distance of 10 nm?

0.45 degrees above the horizontal to 1.75 degrees each side of the localiser centreline

0.70 degrees above the glide path and 2.5 degrees each side of the localiser centreline

1.35 degrees above the horizontal to 5.25 degrees above the horizontal, and 8 degrees each side of the localiser centerlinereline

3 degrees above the horizontal to 5.25 degrees above the horizontal, and 8 degrees each side of the localiser centreline

1.35 degrees above the horizontal to 5.25 degrees above the horizontal, and 8 degrees each side of the localiser centerlinereline

Q48. Full scale deflection of the localiser needle indicates that the aircraft is approximately?

2.5 degree offset from the localiser centreline

10 degrees offset from the localiser centreline

1.25 degrees offset from the localiser centreline

5 degrees offset from the localiser centreline

2.5 degree offset from the localiser centreline

Q49. Full deflection on a glide slope indicator indicates that the aircraft is?

0.7 degrees above or below the correct glide path

0.5 degrees above or below the correct glide path

1.25 degrees above or below the correct glide path

2.5 degrees above or below the correct glide path

0.7 degrees above or below the correct glide path

Q50. #The upper and lower limits of an ILS glide path transmitter having a 3.5° glide slope are:

5.250° -1.350°

6.125°-1.575°

7.700°-1.225°

3.850° -3.150°

$6.125^{circ}-1.575^{circ}$

Q51. #The OUTER MARKER of an Instrument Landing System (ILS) facility transmits on a frequency of:

200 MHz and is modulated by alternate dot/dash in morse

75 MHz and is modulated by morse at two dashes per second

75 MHz and is modulated by alternate dot/dash in morse

300 MHz and is modulated by morse at two dashes per second

75 MHz and is modulated by morse at two dashes per second

Q52. Which of the following alternatives is correct regarding audio and visual signals in the cockpit when passing overhead the middle marker?

Audio: 3000 Hz;_alternating dots and dashes._Visual: Amber light flashes

Audio: 400 Hz;_ 2 dashes per second. _Visual: Blue light flashes

Audio: 1300 Hz; alternating dots and dashes. Visual: Amber lights flashes

Audio: 74 MHz;_ 2 dots per second. _Visual: Blue light flashes

Audio: 1300 Hz; alternating dots and dashes. Vishal: Amber lights flashes

Q53. #The audio modulation of the middle marker is keyed to give?

Continuous dashes at a rate of 2 dashes per second

Continuous dots at a rate of 6 dots per second

A sequence of 3 dashes, 3 dots and 3 dashes every second

Alternating dots and dashes at a rate of 2 dashed per second and 6 dots per second

Q54. *One of the possible disturbances of the ILS signals is “scalloping”. Which statement is correct?

Scalloping are rapid changes or bends, which can be followed by the aircraft

Scalloping are minor changes or bends, which can be followed by the aircraft

Scalloping causes rapid indication changes from side of the intended approach path, which can not be followed by the aircraft

Scalloping are major changes or bends, which cannot be followed by the aircraft

Scalloping causes rapid indication changes from side of the intended approach path, which can not be followed by the aircraft.when flying in mountainous terrain – ILS localizer needle will fluctuate – small fluctuation should be ignored.

Q55. Assuming a five dot display, what does each of the dots on either side of the ILS localizer cockpit display represent:

2.0 degrees

2.5 degrees

1.5 degrees

0.5 degrees

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Results

Q1. *Which answer states the typical distances along the centreline of the runway of the various ILS components?

Q2. #False beams on the ILS glide path are?

Q3. #The coverage of an ILS localizer extends to…….. either side of the on-course line out to a range of………. NM.

Q4. The ILS marker with an aural frequency of 400 Hz is?

Q5. The transmission of the glide slope beacon is characterized by?

Q6. *Where, in relation to the runway, is the ILS localiser transmitting aerial normally situated?

Q7. #An aircraft carrying out an ILS approach is receiving more 90 Hz than 150 Hz modulation notes from both the localiser and glide path transmitters. The ILS indication will show:

Q9. #The MIDDLE MARKER of an Instrument Landing System (ILS) facility is identified audibly and visually by a series of:

Q10. Which of the following correctly describes the Instrument Landing System (ILS) localiser radiation pattern?

Q11. **Regarding ILS which of the following is true?

Q12. *An aircraft tracking to intercept the ILS localizer inbound on the approach side but outside the published coverage angle:

Q13. Every 10 kt decrease in groundspeed, on a 3 ILS glidepath, will require an approximate:

Q14. Which of the following is an ILS localiser frequency?

Q15. “Beam bends” in the ILS approach path are?

Q17. According to the ILS coverage areas as defined in ICAO Annex 10, in which of the following situations will the pilot be guaranteed a reliable signal from the localiser?

Q18. **The audio frequency modulation of the middle marker shall be keyed a follows?

Q19. *The heading rose of an HSI is frozen on 200 degree, Lined up on the ILS of runway 25, the localizer needle will be?

Q20. Assuming a five dot display on either side of the ILS localiser cockpit display. What is the angular displacement of the aircraft from the localiser centerline when the CDI is deflected 2 dots to the right?

Q21. ** 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:

Q22. *An aircraft’s Instrument Landing System glide slope and localizer receivers are receiving predominant 90 Hz modulated signals. If the aircraft is within the coverage of the ILS, QDM of 264°, it is:

Q23. ## The three different markers can be used in the ILS to determine the distance to the ILS touchdown point of the runway as follows?

Q24. In an ILS, concerning the glide path principle of operation, the difference in depth of modulation (DDM) will?

Q25. #The amplitude modulation and the colour of an outer marker (OM) is:

Q26. Which of the following list use the VHF band? 1. Locator 2. Localizer 3. Outer Marker 4. Glide Path The combination regrouping all the correct statements is?

Q27. # The ILS receiver of an aircraft on approach and flying on the right of the exact runway centreline will receive?

Q28. *The visual and aural indications obtained when overflying an ILS middle marker are:

Q29. Which of these ILS indicators shows an aircraft on final approach left of the centre line and at maximum safe deviation below the glide path? (Visual Q.)

Q30. #ILS produces?

Q31. What is the effect of FM broadcast stations that transmit on frequencies just below 108 MHz on the performance of ILS?

Q32. **A Cat III ILS glide path transmitter provides reliable guidance information down to:

Q33. A category II ILS installation encountered in the UK:

Q34. *An aircraft’s Instrument Landing System glide slope and localizer receivers are receiving predominant 150 Hz modulated signals. If the aircraft is within the coverage of the ILS, QDM of 270°, it is:

Q35. **** A VOR is situated at the far end of the runway on which an aircraft is making an ILS approach. Nav 1 is switched to the localiser frequency and Nav 2 to the VOR frequency. At the moment that the needle of #1 indicator reaches the outer dot the deflection needle of #2 indicator will be at?

Q36. #Instrument Landing Systems (ILS) Glide Paths provide azimuth coverage (i) ………………degree each side of the localiser centre-line to a distance of (ii). ………….NM from the threshold.

Q37. *ILS is subject to false glide paths resulting from:

Q38. An ILS receiver?

Q39. **The ILS receiver of an aircraft on approach and flying on the glide path will receive?

Q40. *An aircraft tracking to intercept the Instrument Landing System (ILS) localiser inbound on the approach side, outside the published ILS coverage angle:

Q41. #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)………….

Q42. ***According to ICAO 8168, what is regarded as the maximum safe deviation below the glide path during ILS approaches?

Q43. **The back course of an ILS may give?

Q44. *A Category 1 Instrument Landing System (ILS) ground installation provides accurate guidance from coverage limit down to:

Q45. On final on ILS approach, at 0.6 nm from the threshold, which marker are you likely to hear?

Q46. On final on an ILS approach, you are flying overhead the outer marker. You can expect to be at?

Q47. #What is the approximate angular coverage of reliable navigation information for a 3 degree glide path out to a minimum distance of 10 nm?

Q48. Full scale deflection of the localiser needle indicates that the aircraft is approximately?

Q49. Full deflection on a glide slope indicator indicates that the aircraft is?

Q50. #The upper and lower limits of an ILS glide path transmitter having a 3.5° glide slope are:

Q51. #The OUTER MARKER of an Instrument Landing System (ILS) facility transmits on a frequency of:

Q52. Which of the following alternatives is correct regarding audio and visual signals in the cockpit when passing overhead the middle marker?

Q53. #The audio modulation of the middle marker is keyed to give?

Q54. *One of the possible disturbances of the ILS signals is “scalloping”. Which statement is correct?

Q55. Assuming a five dot display, what does each of the dots on either side of the ILS localizer cockpit display represent:

Thank You