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IFR Nav Aids > ASL Exam Questions (Multi-Choice) > Flashcards

ASL Exam Questions (Multi-Choice) Flashcards

1
Q

How are permanent runway lighting systems classified in NZ?

  • *A** By lighting intensity. e.g. High intensity, medium intensity, low intensity
  • *B** By lighting system complexity. e.g. Low complex edge lights, medium edge lights and threshold lights, high complex includes all other systems

C By spacing of lighting systems e.g. low spacing threshold lights, medium spacing runway edge lighting, high spacing hazard lighting

D By colour of lighting systems e.g. amber lighting, white lighting, green lighting

A

A By lighting intensity. e.g. High intensity, medium intensity, low intensity

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2
Q

GPS units use (unless otherwise stated) a geodetic global datum called WGS84, Other datums exist such as NZ1949. If inputs into a GPS unit are used based on another datum other than WGS84, You could expect;

A Possibly small or minor errors (10-20m)

B No error at all

C The GPS will not work

D Can cause significant errors (100’s of meters)

A

D Can cause significant errors (100’s of meters)

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3
Q

What is the rated range of SSR in NZ?

A 265nm

B 256nm

C 80nm

D 200nm

A

A 256nm

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4
Q

Typical air driven direction indicators (heading indicators) use a gyro system and service limits of 55° in pitch and roll are common, If these limits are exceeded what is the result?

A When nearing the limits of the gyro it will automatically cage itself and then uncage it self for normal operation once steady flight is regained

B The gyro and attached compass card will rotate rapidly and will require the use of the caging knob to make the instrument serviceable again

C It will cause an over read on the compass card due to the increasing effects of gimbal error above the 55° service limits

D The compass index card will first begin to oscillate in one direction then quickly rotate in the opposite direction, the instrument will settle and be useable as soon as normal flight is returned

A

B The gyro and attached compass card will rotate rapidly and will require the use of the caging knob to make the instrument serviceable again

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5
Q

Primary surveillance radar (PSR) utilises what principle to operate?

A Pulse Radar and does not require aircraft information

B Constant wave radar and does require information from the aircraft

C Pulse Radar and does require information from the aircraft

D Constant wave radar and does not require information from the aircraft

A

A Pulse Radar and does not require aircraft information

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6
Q

When comparing FM modulation to AM modulation, some of the advantages of FM are?

A the receiver is less complex, more bandwidth is used

B the transmitter is more complex, less bandwidth is used

C Static is virtually eliminated, lower transmitter power is required

D Lower frequencies are used, receiver is less complex

A

C Static is virtually eliminated, lower transmitter power is required

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7
Q

Pictured is a typical pressure instrument layout and their associated tubing, Which option correctly identifies the labels?

A (T)Pitot Tube, (Z)VSI, (U)Total Pressure

B (T)Static Line, (Z)VSI, (U)Dynamic Pressure

C (T)Static Port, (Z)ASI, (U)Freestream

D (T)Pitot Head, (Z)Altimeter, (U)Pitot Pressure

A

A (T)Pitot Tube, (Z)VSI, (U)Total Pressure

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8
Q

a 3D GPS fix requires how many satellites?

A 2

B 5

C 4

D 3

A

C 4

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9
Q

What causes the reference bar of the air driven attitude indicator (AH) instrument to oscillate quickly immediately when suction is first applied?

A Low rotor rigidity, and very low precision force

B Low rotor rigidity, and high precision force

C High rotor rigidity, and high precision force

D High rotor rigidity, and very low precession force

A

B Low rotor rigidity, and high precision force

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10
Q

The turning error in the direct reading magnetic compass is mainly due to?

A The centripetal force acting on the offset centre of gravity of the magnets pivot

B Some of the magnetic vertical component Z acting in the plane of rotation on the pivot magnet system when tilted or in a turn

C Due to the liquid damping fluid in the bowl

D Due to the additional small magnets that are installed during the compass swing calibration

A

B Some of the magnetic vertical component Z acting in the plane of rotation on the pivot magnet system when tilted or in a turn

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11
Q

You are planning a flight from Fiji to Hawaii, The en-route charts state the following navigation aid frequencies available for the route; 1229KHz, 3456KHz, 1196KHz and 2215KHz. Which frequency would be best suited if your flight is to be flown midnight local time?

A 3456KHz, as the ionosphere layer is lower

B 1196KHz, as the ionosphere layer is higher

C 3456KHz, as the ionosphere layer is higher

D 1229KHz, as the ionosphere layer is lower

A

B 1196KHz, as the ionosphere layer is higher

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12
Q

Primary (PSR) radar mainly uses which band of radio frequency?

A UHF band

B VHF band

C MF band

D LF/MF band

A

A UHF band

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13
Q

ATC systems alert controllers when an aircraft in range has selected one of the three emergency transponder codes. To prevent a false alarm, what precaution should be made when changing transponder codes?

A Select the transponder to OFF when changing codes

B Select the Mode A function

C Turn the mode selector function off on the unit

D Set the mode selector to standby

A

D Set the mode selector to standby

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14
Q

State the emergency transponder code to be used in the event of a radio failure in flight while in NZ

A 7700

B 7500

C 7600

D 7800

A

C 7600

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15
Q

What is the advantage of modern airborne weather radar that utilises Doppler technology?

A Can detect clear air turbulence

B Can detect severe turbulence and possible wind-shear by measuring raindrop velocities

C The range is effectively doubled

D It provides a significantly wider horizontal beam

A

B Can detect severe turbulence and possible wind-shear by measuring raindrop velocities

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16
Q

What is the rated range of PSR in NZ?

A 76nm

B 80nm

C 256nm

D 120nm

A

**B **80nm

17
Q

State the standard PAPI angle setting and associated standard threshold crossing height (TCH)

A 2.5° 60ft

B 3.0° 47ft

C 2.5° 47ft

D 3.0° 60ft

A

B 3.0° 47ft

18
Q

Pictured is a typical ASI from a light twin aircraft, What does the yellow range on the ASI represent?

A normal range

B caution range

C turbulence range

D flaps extended range

A

B Caution Range

19
Q

The modern ADF system uses a fixed twin loop aerial system, the twin loop system;

A Does not require a sense ariel to resolve the null ambiguity

B Has one loop placed athwartship (lateral plane)

C Has one loop placed in the fore and aft plane

D Also requires a sense ariel to resolve the null ambiguity

A

D Also requires a sense ariel to resolve the null ambiguity

20
Q

The Tilt function in modern airborne weather radar provides what function?

A It is set at predetermined angle for take off and after take off the system automatically adjusts the angle during the flight for best range

B It allows the pilot to manually change the angle of the radar beam in its vertical plane

C It is only used for the ground mapping function

D It allows the pilot to manually change the angle of the radar beam in its horizontal plane

A

B It allows the pilot to manually change the angle of the radar beam in its vertical plane

21
Q

Which of the following is considered as station passing for VOR navigation?

A Loss of audible Ident

B The reversal of the TO/FROM indicator

C The CDI bar remaining centred, zero deviation

D The CDI needle being removed from the instrument face

A

B The reversal of the TO/FROM indicator

22
Q

What is the DME distance if you are 16nm ground distance from the the runway and at an altitude of 37,000ft? Use the conversion factor of 1nm = 6076ft

No multi choice, your answer must be numbers only and two decimal places e.g. 100.00

A

Answer: 17.11 (nm)

23
Q

If you are planning to intercept an ILS localiser signal at 12nm out, as you approach the localiser signal the CDI needle will gradually move from full off the scale deflection toward the max scale of ___° indication either side, this also indicates you are approximately ___nm either side of the localiser beam

A 2.5°, 0.5nm

B 5°, 1nm

C 2.5°, 1nm

D 5°, 0.5nm

A

**A **2.5°, 0.5nm

24
Q

When received VOR signals are ‘in phase’ or 180° ‘out of phase’ the CDI needle is centred;

A Only when you are on the selected radial and heading TO the station

B Only when you are on the selected radial reciprocal and heading TO the station

C When you are on the selected radial or its reciprocal regardless of aircraft heading

D Only when you are on the selected radial or its reciprocal and heading directly away from the station

A

C When you are on the selected radial or its reciprocal regardless of aircraft heading

25
Q

To confirm you are at the correct height for a 3° glide-slope approach where you are 9.2nm from the runway and the runway threshold is 123ft. What would be the correct reference height confirming you are on the correct glide-slope?

A 2883ft

B 2700ft

C 2760ft

D 1514ft

A

A 2883ft

26
Q

As you make a taxi turn to the left on the ground, the turn coordinator gives the below (pictured) indication. This instrument is;

A Unserviceable, it should not indicate a turn on the ground

B Unserviceable, the ball should remain centred while turning due to gravity

C Unserviceable, It is giving the opposite indication

D Serviceable, it is giving the correct indication

A

D Serviceable, it is giving the correct indication

27
Q

Comparing PSR to SSR Radar, SSR offers what advantage(s)?

  • *A** Larger size, more powerful
  • *B** PSR has a longer range
  • *C** SSR uses continuous wave radar
  • *D** SSR can positively identify aircraft
A

D SSR can positively identify aircraft

28
Q

The RAIM function of GPS systems uses the best ___ satellites. To do so it needs at least ___ in view to find an anomaly satellite and at least ___ in view to isolate the anomaly satellite

  • *A** 3,4,6
  • *B** 6,5,4
  • *C** 5,6,7
  • *D** 4,5,6
A

D 4,5,6

29
Q

Pictured is an ADF loop antenna and associated sense aerial (cardioid), Which labeled arrow correctly shows the direction of a radio wave where a null would be detected?

A A

B B

C C

D D

A

A A

30
Q

TACAN and VORTAC are military DME type systems, If a civilian aircraft attempts to tune into these systems the civilian aircraft could expect;

A Only able to receive an ident message, no navigation information

B Full DME information will be available when tuned to the TACAN

C Civilian aircraft cannot tune the frequency used by TACAN or VORTAC

D The TACAN will provide bearing information only, no DME information will be available

A

B Full DME information will be available when tuned to the TACAN

IFR Nav Aids (8 decks)

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