The OBS is set on 048° TO appears in the window The needle is close to full right deflection The VOR radial is approximately ?
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The OBS is set to 235° The indications of the VOR are half scale deflection left and 'TO' The aircraft is on the radial ?
The operating principle of a DME is the measurement of the ?
When flying at 6000 feet above ground level dme indicates 5 nm what the horizontal distance from aircraft to overhead dme Time between transmission reception of radio pulses. 6000 ft = 1 nm pythagora theorem dme range² = ground range² + height² 5² = ground range² + 1² ground range² = 25 1 ground range = sqrt24 ground range = 4 89 (sqrt square root). 
You are on a magnetic heading of 055° and your adf indicates a relative bearing of 325° the qdm Time between transmission reception of radio pulses. for training purpose luizmonteiro learning adf relative bearings are measured clockwise from nose of aircraft round to direction of ndb. 
Your aircraft heading 075°m the obi set to 025° the vor indications are 'to' with needle showing right deflection relative to station you are situated in a quadrant defined the radials Time between transmission reception of radio pulses. for training purpose luizmonteiro learning vor the to indication means you are closer to 025° to beacon than 025° from beacon the 025° to beacon the 025 + 180 = 205° radial you are between 115° radial the 295° radial to south west of beacon since needle deflection to right you must turn right to join selected 205° radial inbound (or after passing beacon 025° radial outbound) it means that we cannot be right of radial 205° thus we are between '205° 295°' radials. 
Which of following affects vdf range The height of transmitter of receiver. for training purpose luizmonteiro learning vor the to indication means you are closer to 025° to beacon than 025° from beacon the 025° to beacon the 025 + 180 = 205° radial you are between 115° radial the 295° radial to south west of beacon since needle deflection to right you must turn right to join selected 205° radial inbound (or after passing beacon 025° radial outbound) it means that we cannot be right of radial 205° thus we are between '205° 295°' radials. Question 177-8
Which of following errors associated with use of vor The height of transmitter of receiver. definition says 'one of a series of curves along an edge' (same as shell(r) petrol sign!) when you get scalloping on a vor your aircraft will fly a series of curves (like a snake!) as opposed to a constant heading you could expect from a vor. Question 177-9
What the audio frequency of inner marker The height of transmitter of receiver. icao annex 10 aeronautical telecommunications volume 1 (radio navigation aids) 3 1 7 4 modulation 3 1 7 4 1 the modulation frequencies shall be as follows a) inner marker (when installed) 3 000 hz b) middle marker 1 300 hz c) outer marker 400 hz the frequency tolerance of above frequencies shall be plus or minus 2 5 per cent the total harmonic content of each of frequencies shall not exceed 15 per cent 3 1 7 4 2 the depth of modulation of markers shall be 95 per cent plus or minus 4 per cent. Question 177-10
What the 'q' code a magnetic bearing from a vdf station The height of transmitter of receiver. icao annex 10 aeronautical telecommunications volume 1 (radio navigation aids) 3 1 7 4 modulation 3 1 7 4 1 the modulation frequencies shall be as follows a) inner marker (when installed) 3 000 hz b) middle marker 1 300 hz c) outer marker 400 hz the frequency tolerance of above frequencies shall be plus or minus 2 5 per cent the total harmonic content of each of frequencies shall not exceed 15 per cent 3 1 7 4 2 the depth of modulation of markers shall be 95 per cent plus or minus 4 per cent. Question 177-11
What measured in order to establish aircraft position in relation to localizer beam on an ils The difference in depth between 9 hz modulation the 5 hz modulation. icao annex 10 aeronautical telecommunications volume 1 (radio navigation aids) 3 1 7 4 modulation 3 1 7 4 1 the modulation frequencies shall be as follows a) inner marker (when installed) 3 000 hz b) middle marker 1 300 hz c) outer marker 400 hz the frequency tolerance of above frequencies shall be plus or minus 2 5 per cent the total harmonic content of each of frequencies shall not exceed 15 per cent 3 1 7 4 2 the depth of modulation of markers shall be 95 per cent plus or minus 4 per cent. Question 177-12
What are modulation frequencies of two overlapping lobes that are used on an ils approach The difference in depth between 9 hz modulation the 5 hz modulation. . Question 177-13
Which of following correctly describes instrument landing system ils localiser radiation pattern Two overlapping lobes on same vhf carrier frequency. radiation pattern are 90 hz 150 hz signals distribution of frequencies seen in approach direction if aircraft exactly on glidepath (on exact runway centreline) it receives a balance between modulations. Question 177-14
Which one the most correct statement regarding range of dme system Range within 'line of sight' maximum 2 nm. radiation pattern are 90 hz 150 hz signals distribution of frequencies seen in approach direction if aircraft exactly on glidepath (on exact runway centreline) it receives a balance between modulations. Question 177-15
You are on a compass heading of 090° on 255 radial from a vor you set course 190° on your obs the deviation bar will show Full scale deflection left with a 'from' indication. for training purpose luizmonteiro learning vor. Question 177-16
Which one of statements below correct regarding dme The dme operating frequencies are in uhf frequency band. for training purpose luizmonteiro learning vor. Question 177-17
What actually happens in adf receiver when bfo position selected The bfo circuit imposes a tone onto carrier wave to make ndb's ident audible. Bfo beat frequency oscillator on modern aircraft bfo activated automatically. Question 177-18
If a failed rmi rose stuck on 090° and adf pointer indicates 225° relative bearing to station will be The bfo circuit imposes a tone onto carrier wave to make ndb's ident audible. the top of rmi always where aircraft pointing (heading) hence if it's stuck on 090° you simply subtract that from number needle's pointing to get relative bearing in other words if you want to join ndb station you have to turn right 135°. Question 177-19
Full scale deflection of localiser needle indicates that aircraft approximately 2 5° offset from localiser centreline. img /com_en/com062 47 jpg the indication on cockpit instrument the same as that of a vor a right left or centered needle the procedure getting on course also same fly toward needle full scale deflection of cdi (course deviation indicator) needle approximately 2 5° movement of cdi therefore four times more sensitive. Question 177-20
In order to measure radial from a vor aircraft vor receiver Measures phase difference between reference phase the variable phase of signal. two signals are transmitted from ground station (above) first the non directional reference phase the second the rotating variable phase both signals are transmitted 30 times per second the variable phase transmits cyclically around 360 degrees of azimuth approximately 30 times per second the reference phase signal transmitted every time variable phase transmission sweeps past magnetic north radial information derived from difference in time between two signals (which would be different each radial) this computation referred to as phase difference is displayed the airborne equipment. Question 177-21
Assuming a five dot display on either side of ils localiser cockpit display what the angular displacement of aircraft from localiser centreline when cdi deflected 2 dots to right Measures phase difference between reference phase the variable phase of signal. five dot display (on either side) course deviation indicator (cdi) if cdi deflected 2 dots to right we have to turn right to correct our path so we are on left of centerline exactly 1° to left. Question 177-22
An ndb on a relative bearing of 316° from an aircraft given compass heading 270° deviation 2°wat aircraft variation 30°e at station variation 28°ecalculate true bearing of ndb from aircraft Measures phase difference between reference phase the variable phase of signal. compass heading deviation west = magnetic heading 270° 2°w = 268° magnetic heading + variation east = true heading 268° + 30° = 298° the ndb on a relative bearing of 316° from aircraft (360° 316° = 44° left of nose) true bearing to beacon 298° 44° = 254°. Question 177-23
If you are on an ils approach and in case your glide slope indicator shows a deviation of more than half scale deflection downwards You should commence a go around because obstacle clearance no longer ensured. compass heading deviation west = magnetic heading 270° 2°w = 268° magnetic heading + variation east = true heading 268° + 30° = 298° the ndb on a relative bearing of 316° from aircraft (360° 316° = 44° left of nose) true bearing to beacon 298° 44° = 254°. Question 177-24
An aircraft at fl 100 should be able to receive a vor groundstation at 100 ft above msl at an approximate maximum range of You should commence a go around because obstacle clearance no longer ensured. for coverage range to calculate range in nm official learning objectives formula is 1 23 x square root transmitter height in feet + 1 23 x square root receiver height in feet 1 23 x sqrt100 + 1 23 sqrt10000 = 135 3 nm (sqrt square root). Question 177-25
An aeroplane flies over position a which due north of a vor station sited at position b the magnetic variation at a 18°w and at b 10°w what radial from b the aircraft on You should commence a go around because obstacle clearance no longer ensured. the aircraft positioned due north of vor (on a bearing of 000° true) magnetic variation applied at vor ground station therefore in this case a magnetic variation of 010°w applied when variation west this means that at vor magnetic north to west of true north the aircraft on 010° radial from vor. Question 177-26
Full deflection on a glide slope indicator indicates that aircraft 7° above or below correct glide path. . Question 177-27
On what carrier frequency does inner marker transmit 7° above or below correct glide path. According to icao annex 10 all marker beacons operate on 75 mhz carrier frequency modulation frequencies are outer marker 400 hz middle marker 1300 hz inner marker 3000 hz. Question 177-28
The indicated range from a dme station 7° above or below correct glide path. the indicated range from a dme station slant range . Question 177-29
According to icao 8168 what regarded as maximum safe deviation below glide path during ils approach Half scale deflection. icao doc 8168 3 3 flight procedures for racetrack and reversal procedures 3 3 4 descent the aircraft shall cross fix or facility fly outbound on specified track descending as necessary to procedure altitude/height but no lower than minimum crossing altitude/height associated with that segment if a further descent specified after inbound turn this descent shall not be started until aircraft established on inbound track an aircraft considered established when it is a) within half full scale deflection the ils vor or b) within ±5° of required bearing the ndb. Question 177-30
On which of following displays are you able to get a direct read out no calculation necessary from pilot of magnetic bearing from aircraft to ndb Half scale deflection. a fixed card aligned with a heading of 000° therefore only displays relative bearings on a rmi on top of instrument you can read your actual heading on a moving card adf you have to manually align your actual heading with knob. Question 177-31
What according to icao annex 10 the range of a locator Half scale deflection. a fixed card aligned with a heading of 000° therefore only displays relative bearings on a rmi on top of instrument you can read your actual heading on a moving card adf you have to manually align your actual heading with knob. Question 177-32
According to icao annex 10 in which frequency band s does a locator normally transmit Half scale deflection. vor operating frequencies vhf localiser vhf marker beacon vhf dme operating frequencies uhf glide slope uhf gnss/gps uhf l1 l2 frequencies used navstar/gps uhf ils (localiser glide slope) vhf uhf bands microwave landing system (mls) shf airborne weather radars shf locator lf/mf. Question 177-33
A vor and an ndb are co located an aircraft equipped with an rmi flying away from beacons on a radial of 090° through an area where magnetic variation changing rapidly which statement correct The adf needle moves vor needle does not. application of magnetic variation at beacon position a vor at aircraft position a ndb only adf relative bearing will show change of magnetic variation. Question 177-34
Which of these markers has highest audible frequency The adf needle moves vor needle does not. application of magnetic variation at beacon position a vor at aircraft position a ndb only adf relative bearing will show change of magnetic variation. Question 177-35
A mls without dme p provides An ils like approach. application of magnetic variation at beacon position a vor at aircraft position a ndb only adf relative bearing will show change of magnetic variation. Question 177-36
False beams on ils glidepath are Only found above correct glideslope. application of magnetic variation at beacon position a vor at aircraft position a ndb only adf relative bearing will show change of magnetic variation. Question 177-37
On an ils approach glidepath needle fully down how much deflection does this indicate Only found above correct glideslope. full scale deflection on glidepath needle corresponds to approximately 0 7° from ils glidepath centre line. Question 177-38
The audio modulation of middle marker keyed to give Alternating dots dashes at a rate of 2 dashes per second 6 dots per second. full scale deflection on glidepath needle corresponds to approximately 0 7° from ils glidepath centre line. Question 177-39
If you are flying a back course ils you are flying a Non precision approach on reciprocal runway of precision approach runway. in a conventional localizer signal radiates outwards from end of runway along extended center line of runway usually a by product of this a signal that radiates in reverse direction some installations take advantage of this 'spurious signa use it an instrument approach localizer signal also 'propagating' in opposite direction back down runway for information a non precision approach an instrument approach landing which utilises lateral guidance but does not utilise vertical guidance a precision approach an approach in which range azimuth glide slope information are provided to pilot. Question 177-40
What a vdf referenced to Magnetic north at station. vdf stations are capable of measuring direction of arrival of radio transmissions from aircraft vdf measures bearing of aircraft with reference to true or magnetic north at station.
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