A locator 1 is a low powered beacon2 is a high powered beacon3 has a range of 10 25 NM4 has a range of 10 400 NM ?
Multiple > protocol
Which of the following alternatives is correct regarding audio and visual signals in the cockpit when passing overhead a middle marker ?
Concerning the localiser principle of operation in an ILS the needle of the aircraft indicator is centred when the difference in depth of modulation DDM is ?
Concerning glidepath principle of operation in an ils system needle of indicator centred when difference in depth of modulation ddm Audio 3 hz alternating dots dashes visual amber. 
An ils receiver Measures difference in depth of modulation of two transmitted signals. 
Mls primarily being installed at airports where Ils encounters difficulties because of surrounding buildings and/or terrain or interference from local music stations. 
The ils marker identified audibly a series of dots 6 per second the Ils encounters difficulties because of surrounding buildings and/or terrain or interference from local music stations. Question 178-8
With regard to range of ndb's and accuracy of bearings they provide can be stated that in general at night The range increases the accuracy decreases. Question 178-9
Which statement correct with respect to range of an ndb With propagation over sea range will be greater than range with propagation over land. ndb signals follow curvature of earth so they can be received at much greater distances at lower altitudes a major advantage over vor however ndb signals are also affected more atmospheric conditions mountainous terrain coastal refraction electrical storms particularly at long range. Question 178-10
Which statement correct homing towards an ndb in an area with constant wind and constant magnetic variation The relative bearing of ndb should be kept °. if pilot flying directly to station bearing indicator points to 0° relative bearing the angle formed the intersection of a line drawn through centerline of aircraft a line drawn from aircraft to radio station this angle always measured clockwise from nose of aircraft is indicated directly the pointer on bearing indicator pay attention! a question looks similar but instead of 'homing' you have 'tracking' it different homing you are following adf needle direction you will drift you constantly change heading to reach station tracking you fly at constant course to reach beacon you apply a wind correction angle. Question 178-11
Which statement correct tracking towards an ndb in an area with constant wind and constant magnetic variation The relative bearing of ndb should be equal (in magnitude sign) to experienced drift angle. relative bearing the direction of station expressed as an angle measured clockwise from forward point of longitudinal axis of an aircraft in order to fly directly onto station you must apply a drift (except if it's headwind or tailwind) img /com_en/com062 390 jpg pay attention! question 389 looks similar but instead of 'tracking' you have 'homing' it different tracking you fly at constant course to reach beacon you apply a wind correction angle homing you are following adf needle direction you will drift you constantly change heading to reach station. Question 178-12
The dme line of position a circle with radius at The ground distance centre dme station. dme line of position definition a position line using dme a circle with station at its centre distance measured dme slant range however circle at ground distance centre dme station . Question 178-13
The localiser transmits in The ground distance centre dme station. 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 178-14
What the effect of fm broadcast stations that transmit on frequencies just below 108 mhz on performance of ils These transmissions may interfere with ils localizer signal which may lead to erroneous localizer deviation indication. fm broadcast stations that transmit on frequencies just below 108 mhz may lead to erroneous localizer deviation indication this factor affecting range accuracy of ils localizer signal. Question 178-15
What the function of a fm immune filter To make ils localizer receiver less susceptible to interference from commercial fm stations (radio television). jomargra why ils glide path not affected? gs in uhf range tv also in uhf fm immunity relates (in reality) solely to bottom end of vhf nav band solely to receivers it all happened when government sold off 'guard ban gap in frequency allocation between fm broadcasting aircraft navigation so fm broadcasters now come right up to edge 108 mhz but not tv broadcasters. Question 178-16
On rmi tip of a vor needle indicates 060° with crs set on 055° indications on hsi are To half scale deflection to right. to avoid risks of confusion we assume that we are on course to station our heading superposed with rmi indication note that result will be same whatever your heading is we are on radial 240° half scale deflection to right vor has 5 dots to either side of center eah dot represents 2° of deviation we are on radial 240° we selected a crs 055° (radial 235°) 5° deviation half scale deflection for training purpose luizmonteiro learning vor. Question 178-17
To provide a pilot with position of aircraft in absence of radar atc must have at its disposal at least Two vdf's at different locations able to take bearings simultaneously on transmitted frequency. vdf the abbreviation 'vhf direction finder' 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 with two vdf's at different locations atc able to provide position of aircraft. Question 178-18
Vdf the abbreviation Vhf direction finder. vdf the abbreviation 'vhf direction finder' 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 with two vdf's at different locations atc able to provide position of aircraft. Question 178-19
The transmission of glide slope beacon characterised a Uhf frequency with a minimum range of nm. 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 178-20
A locator beacon differs from an ndb with respect to 1 operational use2 transmission power3 presentation in cockpit4 frequency bandfrom above stated differences following numbers are correct Uhf frequency with a minimum range of nm. according to icao annex 10 a locator a low powered beacon with a range of 10 to 25 nm frequency band (190 khz to 1750 khz) presentation in cockpit are same a locator for airfield or runway approach ndb a high powered beacon used en route airways navigation (range up to 250 nm). Question 178-21
An aircraft flying on a magnetic heading of 210° the magnetic variation at vor 5°w and at aircraft 10°w according to hsi shown at annex aircraft on radial err _a_062 417 Uhf frequency with a minimum range of nm. Img /com_en/com062 15113 jpg half scale needle deflection on vor tracking mode 5° for training purpose please use one of following websites navigation simulator adf vor simulator vor simulator luizmonteiro learning vor. Question 178-23
The reading of rmi bearing 300° at tip of needle the magnetic variation at dr position 24°w magnetic variation at ndb 22°w and deviation 2° the compass heading 020° the true bearing Uhf frequency with a minimum range of nm. compass heading = 020° deviation = 2° (westerly deviation deviation west compass best ) magnetic heading = 018° variation = 24°(ndb variation at aircraft position variation west magnetic best ) true heading = 354° we are looking a bearing from station the rmi bearing 300° at tip of needle at a heading of 020° a bearing to beacon of 300° relative bearing must be 280° (300° 020°) reciprocal true bearing = heading + relative bearing reciprocal true bearing = 354° + 280° = 634° true bearing = 634° 360° = 274°. Question 178-24
Classify marker from lower aural frequency to higher aural frequency 1 inner marker if available 2 middle marker3 outer marker Uhf frequency with a minimum range of nm. inner middle outer. Question 178-25
Range of 'vdf' depends on 1 line of sight formula2 power of transmitters3 intervening high ground the combination regrouping all correct statements Uhf frequency with a minimum range of nm. inner middle outer. Question 178-26
Locators are 1 high powered ndbs used en route and airways navigation 2 low powered ndbs used airfield or runway approach 3 beacons with a usually range of 10 to 250 nm 4 beacons with a usually range of 10 to 25 nm the combination regrouping all correct statements Uhf frequency with a minimum range of nm. inner middle outer. Question 178-27
Allocated frequencies 'ndb' are Uhf frequency with a minimum range of nm. ndbs (non directional beacons) used aviation are standardised icao annex 10 which specifies that ndbs be operated on a frequency between 190 khz 1750 khz. Question 178-28
On final on an 'il approach you are flying overhead outer marker you can expect to be at Uhf frequency with a minimum range of nm. ndbs (non directional beacons) used aviation are standardised icao annex 10 which specifies that ndbs be operated on a frequency between 190 khz 1750 khz. Question 178-29
An aircraft has a magnetic heading of 290° and on vor radial 280 which value has to be selected on obs to get a to indication and cdi course deviation indicator centred Uhf frequency with a minimum range of nm. the heading of aircraft irrevelant the radials of a vor always point away from station you are on radial 280° if you want to go to station you must select radial minus 180° (or + 180° it's up to you) notice if you want a from indication you just have to select 280° for training purpose please use one of following websites navigation simulator adf vor simulator vor simulator luizmonteiro learning vor. Question 178-31
Which of following list use vhf band 1 locator2 localiser3 outer marker4 glide paththe combination that regroups all corrects statements Uhf frequency with a minimum range of nm. vor operating frequencies vhf localiser vhf marker beacon vhf dme operating frequencies uhf glide slope/path uhf gnss/gps uhf l1 l2 frequencies used navstar/gps uhf ils (localiser glide slope) uhf vhf bands microwave landing system (mls) shf airborne weather radars shf locator lf/mf. Question 178-32
Range of vdf depends on 1 loudness of voices of pilot and operator when transmitting 2 power of airborne and ground transmitters 3 power of pilot voice when transmitting 4 aircraft altitude and ground transmitter elevationthe combination regrouping all correct statements Uhf frequency with a minimum range of nm. vor operating frequencies vhf localiser vhf marker beacon vhf dme operating frequencies uhf glide slope/path uhf gnss/gps uhf l1 l2 frequencies used navstar/gps uhf ils (localiser glide slope) uhf vhf bands microwave landing system (mls) shf airborne weather radars shf locator lf/mf. Question 178-33
An aircraft on a heading of 180°m on a bearing of 270°m from a vor the bearing you should select on omni bearing selector to centralise vor/ils left/right deviation needle with a to indication Uhf frequency with a minimum range of nm. img /com_en/com062 437 jpg to centralise vor/ils deviation needle you can set 090° or 270° if you choose 270° you will have a 'from' indication for training purpose please use one of following websites navigation simulator
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