A free Premium account on the FCL.055 website! Read here
Sign up to unlock all our services and 15164 corrected and explained questions.


Question 207-1 : Given.vor station position n61° e025°, variation 13°e.estimated position of an aircraft n59° e025°, variation 20°e..what vor radial is the aircraft on ? [ Exam pilot ]

167°.

.the application of magnetic variation is..ndb aircraft position...vor beacon position... 1683.aircraft is south 180°t of the vor, and we have to apply variation at the vor position.. variation east, magnetic least..180° 13° = 167° exemple 307 167°.

Question 207-2 : Which one of the following correctly lists the major ground based components of a microwave landing system mls ?

Separate azimuth and elevation transmitters, dme facility.

.mls is a precision approach and landing guidance system which provides position information and various ground to air data. the position information is provided in a wide coverage sector and is determined by an azimuth angle measurement, an elevation angle measurement and a range distance measurement. exemple 311 Separate azimuth and elevation transmitters, dme facility.

Question 207-3 : The captain of an aircraft flying at fl100 wishes to obtain weather information at the destination airfield from the airfield's vor..assuming isa conditions, what is the approximate maximum theoretical range at which it can be expected to obtain this information ?

123 nm.

Formula..1.23* sqrt10000 = 123 nm... sqrt square root exemple 315 123 nm.

Question 207-4 : The bfo selector on an adf receiver is used to ?

Hear the ident of some ndb stations radiating a continuous wave signal.

.the purpose of the bfo switch on the adf receiver is to make the signal audible...bfo beat frequency oscillator exemple 319 Hear the ident of some ndb stations radiating a continuous wave signal.

Question 207-5 : An ndb transmits a signal pattern in the horizontal plane which is ?

Omnidirectional.

.ndb = non directional beacon.non directional = omnidirectional. exemple 323 Omnidirectional.

Question 207-6 : Dme channels utilise frequencies of approximately ?

1000 mhz.

.the dme operates by transmitting to and receiving paired pulses from the ground station. the transmitter in the aircraft sends out very narrow pulses at a frequency of about 1000 mhz. these signals are received at the ground station and trigger a second transmission on a different frequency. these reply pulses are sensed by timing circuits in the aircraft's receiver that measure the elapsed time between transmission and reception..electronic circuits within the radio convert this measurement to electrical signals that operate the distance and ground speed indicators. exemple 327 1000 mhz.

Question 207-7 : A vor and dme are co located. you want to identify the dme by listening to the callsign. having heard the same callsign 4 times in 30 seconds the ?

Dme callsign is the one with the higher pitch that was broadcast only once.

.when identifying a dme station co located with a vor station, the identification signal with the higher tone frequency is the dme which idents approximately every 40 seconds 4 times in 30 seconds, 10 seconds broadcast off. exemple 331 Dme callsign is the one with the higher pitch that was broadcast only once.

Question 207-8 : Given.aircraft heading 160° m , aircraft is on radial 240° from a vor, selected course on hsi is 250°..the hsi indications are deviation bar ?

Behind the aeroplane symbol with the from flag showing.

. 1711.for training purpose.luizmonteiro learning vor. exemple 335 Behind the aeroplane symbol with the from flag showing.

Question 207-9 : In a primary radar using pulse technique, the ability to discriminate between targets in azimuth is a factor of ?

Beam width.

.the three dimensional radar beam is normally defined by its horizontal and vertical beam widths. beam width is the angular width of a radar beam between points within which the field strength or power is greater than arbitrarily selected lower limits of field strength or power..for a given amount of transmitted power, the main lobe of the radar beam extends to a greater distance at a given power level with greater concentration of power in narrower beam widths. to increase maximum detection range capabilities, the energy is concentrated into as narrow a beam as is feasible. exemple 339 Beam width.

Question 207-10 : Distance measuring equipment dme operates in the ?

Uhf band and uses two frequencies.

.dme distance measuring equipment ground stations transmit within a uhf frequency band of 962 to 1213 mhz. the interrogation and reply frequencies always differ by 63 mhz two frequencies are used because, otherwise, the first pulse received would be the ground return from below. exemple 343 Uhf band and uses two frequencies.

Question 207-11 : A vor and a ndb are co located. you cross the vor radial of 240° on a heading of 360° m. in the vicinity of the station you should read an adf bearing of ?

060°.

. 2576.360 + 240 180 = 060°..radial = + 180°. exemple 347 060°.

Question 207-12 : An adf provides the aircraft with bearing information with respect to a ground station. to do this, the ground station emits a signal pattern which is ?

Omnidirectional.

.an omnidirectional ground station antenna is an antenna system which radiates power uniformly in one plane with a directive pattern shape in a perpendicular plane... omnidirectional uniform in all directions. exemple 351 Omnidirectional.

Question 207-13 : An aircraft at fl300, with a groundspeed of 300 kt, is about pass overhead a dme station at msl. the dme receiver is capable of determining ground speed. one minute before the overhead, dme speed and distance indications are respectively ?

Less than 300 kt and 7 nm.

.we have a right angled triangle, so.dme range² = ground range² + height².dme range² = 5² + 5².dme range = sqrt50.dme range = 7.1 nm..and as the aircraft approaches the beacon, the accuracy of the groundspeed displayed reduces and under reads.. 1679 exemple 355 Less than 300 kt and 7 nm.

Question 207-14 : A pilot flying an aircraft at fl 80, tunes in a vor which has an elevation of 313 m..given isa conditions, what is the maximum theoretical distance at which a pilot might expect to receive the vor signals ?

151 nm.

.we need to convert 313 m in feet ==> 1032 ft..1.23* sqrt1032 + sqrt8000 = 149.5 nm.. sqrt square root exemple 359 151 nm.

Question 207-15 : An aircraft is on the 120° radial from a vor station..course 340° is selected on the hsi horizontal situation indicator..if the magnetic heading is 070°, the deviation bar relative to the aeroplane model, will be ?

Behind.

. 1950.a hsi gives a horizontal illustration of where the selected radial is in relation to the aeroplane, whereby the deviation bar represents the selected radial. exemple 363 Behind.

Question 207-16 : An aircraft is situated at 30°n 005°e with a magnetic variation of 10°w..a vor is located at 30°n 013°e with a magnetic variation of 15°w..the aircraft is situated on the vor radial ?

287°.

.3 steps. aircraft and vor on the same latitude 30°n true radial is 270°... conversion angle 0.5 x 13 5 x sin 30° = 2°..aircraft is located west of the vor, in northern hemisphere so true course at vor = 270° + 2°.. last step we apply magnetic variation of 15°w at beacon position for a vor vor radial = 272° + 15° = 287°. exemple 367 287°.

Question 207-17 : An aircraft passes overhead a dme station at 12000 feet above the station..at that time, the dme reading will be ?

Approximately 2 nm.

.1 nm = 6000 ft approximatly..12000 / 6000 = 2 nm.. 1948 exemple 371 Approximately 2 nm.

Question 207-18 : An aircraft, at fl 410 is passing overhead a dme station at mean sea level. the dme indicates approximately ?

6.8 nm.

.1 nm = 6000 ft approximately..41000 ft / 6000 ft = 6.83 nm. 1949 exemple 375 6.8 nm.

Question 207-19 : On the qdr of 075° in the vicinity of the station with a magnetic heading of 295°, the relative bearing on the adf indicator is ?

320°.

. 2577.relative bearings are measured clockwise from the nose of the aircraft, round to the direction of the ndb...for training purpose.luizmonteiro learning vor exemple 379 320°.

Question 207-20 : The bfo selector switch on the adf control panel must be in the on position to enable the pilot to ?

Hear the ident of ndbs using non a1a transmissions.

.if you need to hear the ident of a ndb, you have to select bfo to on, on the adf control panel...you will hear morse code that you can see on a jeppesen chart, example. 1946.newer type non a2a does not need to be selected on to hear the ident. you simply have to adjust sound volume. exemple 383 Hear the ident of ndbs using non a1a transmissions.

Question 207-21 : The obs is set on 048°, to appears in the window..the needle is close to full right deflection..the vor radial is approximately ?

238°.

.the radials of a vor always point away from the station. 1690.we talk about inbound or outbound radial..here, to appears in the window, it means that we are going to the station. our selected course crs is corresponding to radial 228° 048°+180° inbound..if we were on our selected course, our needle will be centered..so we are left of our track and in vor/dme mode full scale deflection of the cdi is 10°...for training purpose.luizmonteiro learning vor. exemple 387 238°.

Question 207-22 : The obs is set to 235°..the indications of the vor are half scale deflection left and 'to'..the aircraft is on the radial ?

050°.

. 2578.for training purpose.luizmonteiro learning vor. exemple 391 050°.

Question 207-23 : The operating principle of a dme is the measurement of the ?

Time between the transmission and reception of radio pulses.

.the dme operates by transmitting to and receiving paired pulses from the ground station. the transmitter in the aircraft sends out very narrow pulses at a frequency of about 1000 mhz. these signals are received at the ground station and trigger a second transmission on a different frequency. these reply pulses are sensed by timing circuits in the aircraft's receiver that measure the elapsed time between transmission and reception..electronic circuits within the radio convert this measurement to electrical signals that operate the distance and ground speed indicators. exemple 395 Time between the transmission and reception of radio pulses.

Question 207-24 : When flying at 6000 feet above ground level, the dme indicates 5 nm..what is the horizontal distance from the aircraft to overhead the dme ?

4.9 nm.

6000 ft = 1 nm..pythagoras' theorem..dme range² = ground range² + height²..5² = ground range² + 1²..ground range² = 25 1..ground range = sqrt24..ground range = 4.89... sqrt square root exemple 399 4.9 nm.

Question 207-25 : You are on a magnetic heading of 055° and your adf indicates a relative bearing of 325°..the qdm is ?

020°.

.for training purpose.luizmonteiro learning adf.. 2579.relative bearings are measured clockwise from the nose of the aircraft, round to the direction of the ndb. exemple 403 020°.

Question 207-26 : Your aircraft is heading 075°m. the obi is set to 025°..the vor indications are 'to' with the needle showing right deflection..relative to the station, you are situated in a quadrant defined by the radials ?

205° and 295°.

.for training purpose.luizmonteiro learning vor.. 2580.the to indication means you are closer to the 025° to the beacon than the 025° from the beacon. the 025° to the beacon is the 025 + 180 = 205° radial. you are between the 115° radial and the 295° radial to the south west of the beacon..since the needle deflection is to the right, you must turn right to join the selected 205° radial inbound or after passing the beacon, the 025° radial outbound..it means that we cannot be right of the radial 205°, thus we are between '205° and 295°' radials. exemple 407 205° and 295°.

Question 207-27 : Which of the following affects vdf range ?

The height of the transmitter and of the receiver.

exemple 411 The height of the transmitter and of the receiver.

Question 207-28 : Which of the following errors is associated with the use of vor ?

Scalloping.

.definition says 'one of a series of curves along an edge' same as the shell r petrol sign.. 2581.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... exemple 415 Scalloping.

Question 207-29 : What is the audio frequency of the inner marker ?

3000 hz.

.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 the above frequencies shall be plus or minus 2.5 per cent, and the total harmonic content of each of the frequencies shall not exceed 15 per cent...3.1.7.4.2 the depth of modulation of the markers shall be 95 per cent plus or minus 4 per cent. exemple 419 3000 hz.

Question 207-30 : What is the 'q' code for a magnetic bearing from a vdf station ?

'request qdr'.

exemple 423 'request qdr'.

Question 207-31 : What is measured in order to establish aircraft position in relation to the localizer beam on an ils ?

The difference in depth between the 90hz modulation and the 150hz modulation.

exemple 427 The difference in depth between the 90hz modulation and the 150hz modulation.

Question 207-32 : What are the modulation frequencies of the two overlapping lobes that are used on an ils approach ?

90 hz and 150 hz.

. 2582 exemple 431 90 hz and 150 hz.

Question 207-33 : Which of the following correctly describes the instrument landing system ils localiser radiation pattern ?

Two overlapping lobes on the same vhf carrier frequency.

.radiation pattern are 90 hz and 150 hz signals. 2582.distribution of the frequencies seen in the approach direction. 2583.if the aircraft is exactly on the glidepath on the exact runway centreline , it receives a balance between modulations. exemple 435 Two overlapping lobes on the same vhf carrier frequency.

Question 207-34 : Which one is the most correct statement regarding the range of the dme system ?

Range within 'line of sight', and maximum 200 nm.

exemple 439 Range within 'line of sight', and maximum 200 nm.

Question 207-35 : You are on a compass heading of 090° on the 255 radial from a vor..you set the course 190° on your obs. the deviation bar will show ?

Full scale deflection left with a 'from' indication.

. 2584.for training purpose.luizmonteiro learning vor. exemple 443 Full scale deflection left with a 'from' indication.

Question 207-36 : Which one of the statements below is correct regarding the dme ?

The dme operating frequencies are in the uhf frequency band.

exemple 447 The dme operating frequencies are in the uhf frequency band.

Question 207-37 : What actually happens in the adf receiver when the bfo position is selected ?

The bfo circuit imposes a tone onto the carrier wave to make the ndb's ident audible.

Bfo beat frequency oscillator..on modern aircraft the bfo is activated automatically. exemple 451 The bfo circuit imposes a tone onto the carrier wave to make the ndb's ident audible.

Question 207-38 : If a failed rmi rose is stuck on 090° and the adf pointer indicates 225°, the relative bearing to the station will be ?

135°.

.the top of the rmi is always where the aircraft is pointing heading and hence if it's stuck on 090°, you simply subtract that from the number the needle's pointing to get the relative bearing...in other words, if you want to join the ndb station, you have to turn right by 135°. exemple 455 135°.

Question 207-39 : Full scale deflection of the localiser needle indicates that the aircraft is approximately ?

2.5° offset from the localiser centreline.

. /com en/com062 47.jpg.the indication on the cockpit instrument is the same as that of a vor, a right, left or centered needle. the procedure for getting on course is also the same, fly toward the needle..full scale deflection of the cdi course deviation indicator needle is approximately 2.5°. movement of the cdi is therefore four times more sensitive. exemple 459 2.5° offset from the localiser centreline.

Question 207-40 : In order to measure the radial from a vor, the aircraft vor receiver ?

Measures the phase difference between the reference phase and the variable phase of the signal.

.two signals are transmitted from the ground station above , the first is the non directional reference phase, and the second is the rotating variable phase. both signals are transmitted 30 times per second. the variable phase transmits cyclically around the 360 degrees of the azimuth approximately 30 times per second. the reference phase signal is transmitted every time the variable phase transmission sweeps past magnetic north.. 2585.radial information is derived from the difference in time between the two signals which would be different for each radial this computation is referred to as phase difference, and is displayed by the airborne equipment. exemple 463 Measures the phase difference between the reference phase and the variable phase of the signal.


~

Exclusive rights reserved. Reproduction prohibited under penalty of prosecution.

8239 Free Training Exam