When the warning flag on a VOR indicator appears, it may indicate:

that the received signal is too weak to be processed in the receiver.

that the quality of the received signal is so poor that it is not possible to establish the phase difference between the reference and the variable signal.

Concerning ADF and NDB:

ADF is a civilian equipment whereas NDB is a military equipment used by civilians too.

NDB is a ground equipment, and ADF is an airborne equipment.

ADF is a ground equipment and NDB can be a ground equipment or an airborne equipment.

NDB is a locator and ADF is an enroute nav-aid.

What datum is used for the Minimum Descent Altitude (MDA) on a non-precision approach when using the NAVSTAR GPS satellite navigation system?

If using Differential GPS (DGPS) the altitude obtained from the DGPS, otherwise barometric altitude.

Which statement is correct with respect to the different types of VOR?

ADVOR is less accurate than a CVOR.

A CVOR is primarily used for instrument approaches.

A VOT is located along an airway with the purpose to provide an in-flight check of the airborne equipment.

Output from which of the following combination of navigational sources provides enough information to the RNAV-equipment to calculate the wind vector?

Inertial Reference System and Air Data Computer.

Compass system and Inertial Reference System.

Inertial Reference System and Global Positioning System.

Global Positioning System and Compass System.

A 2D RNAV system has a capability to navigate in the:

horizontal plane + it has a timing function.

horizontal and vertical planes.

The influence of the ionosphere on the accuracy of the satellite navigation system NAVSTAR GPS is:

minimised by the receiver using a model of the atmosphere and comparing signals transmitted by the satellites.

only significant if the satellites are located at a small elevation angle above the horizon.

minimised by computing the average of all signals.

The sensitive area of an ILS is the area vehicles or taxiing aircraft may not enter when:

category II/III ILS operations are in progress.

ILS operations are in progress.

category I ILS operations are in progress.

the ILS is undergoing calibration.

The allocation of the 24-bit aircraft address used for mode S transponder operation, as described in ICAO annex 10, states that:

every aircraft will have been allocated with an ICAO Aircraft Address which is hardcoded into the airframe.

military aircraft will have been allocated with an ICAO Aircraft Address which is hardcoded into the airframe.

every aircraft will have been allocated with a NATO Aircraft Address which is hardcoded into the airframe.

civil aircraft will have been allocated with an ICAO Aircraft Address which is hardcoded into the airframe.

The required 24 NAVSTAR GPS operational satellites are located on:

6 orbital planes with 4 satellites in each plane.

6 orbital planes with 3 satellites in each plane plus 6 reserve satellites positioned in a geostationary orbital plane.

3 orbital planes with 8 satellites in each plane.

4 orbital planes with 6 satellites in each plane.

An enroute DME and VOR that have the same Morse code identification are associated and are:

within 2,000 feet of each other.

Concerning FMC databases:

the navigation database may be customised for the specific airline operations.

only the navigation database may be customised by the company's cost index strategy.

only the performance database may be customised by the company.

company database and FMC databases cannot be used at the same time.

Which of the following procedures must be adopted if, on a flight under IFR conditions using a NAVSTAR GPS satellite navigation system receiver, the position fix obtained from the GPS receiver differs from the position of conventional navigation systems by an unacceptable amount?

It may be continued using conventional navigation systems.

It must be continued under VFR conditions.

It may be continued using NAVSTAR GPS; prior to the next flight all systems must be checked.

The pilot must determine the reason for the deviation and correct the error or switch off the faulty system.

A VOR and an NDB are located in the same position. Both the VOR and the ADF readings are displayed on the RMI. The aircraft is tracking away from the beacons along the 090 radial. The magnetic variation is changing rapidly. Which of the following is correct?

The direction of the ADF pointer will change, the direction of the VOR pointer will not change.

Neither the direction of the ADF pointer nor the direction of the VOR pointer will change.

Both the direction of the ADF pointer and the direction of the VOR pointer will change.

The direction of the VOR pointer will change, the direction of the ADF pointer will not change.

The indicated range from a DME station is:

0 when passing overhead the station.

ground range only if the beacon is co-located with VOR.

Refer to figure C in the attached diagram. An aircraft is performing an ILS approach and deviated from both the glideslope and localiser. What would be the proper action to regain the correct position on the glideslope and localiser?

Fly left and decrease descent rate.

Fly left and increase descent rate.

Fly right and decrease descent rate.

Fly right and increase descent rate.

A mode S transponder:

responds normally to mode A or C interrogations.

will not respond to mode A interrogations.

responds to mode A interrogations but not to mode C interrogations.

will not respond to mode A or C interrogations as it operates on a different frequency.

In its simplest form, 2D RNAV equipment may consist of:

a VOR/DME receiver with an associated navigation computer.

at least one VOR and 2 DME receivers.

ADF and VOR receivers with an associated navigation computer.

at least 2 DME receivers and an associated navigation computer.

With reference to a VOR, the cone of confusion is:

the area directly overhead a VOR.

the changeover from TO to FROM when the OBS is set 90° to the radial.

the changeover from TO to FROM when the OBS is set 180° to the radial.

The audio frequency modulation of the outer marker shall be keyed as follows:

2 dashes per second continuously.

a continuous series of alternated dots and dashes.

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

6 dots per second continuously.

A VOR and DME are co-located. You want to identify the DME by listening to the Morse code identifier. Having heard the same Morse identifier 4 times in 30 seconds the:

DME Morse ident is the one with the higher pitch that was broadcast only once.

VOR and DME Morse identifiers were the same and broadcast with the same pitch.

DME Morse ident was not transmitted, the distance information is sufficient proof of correct operation.

DME Morse ident is the one with the lower pitch that was broadcast several times.

An electromagnetic wave consists of an oscillating electric field (E) and an oscillating magnetic field (H). Which statement is correct?

When signal passes through the antenna, the 'E' field is parallel to the wire and the 'H' field is perpendicular to the wire.

When signal passes through the antenna, the 'H' field is parallel to the wire and the 'E' field is perpendicular to the wire.

When signal passes through the antenna, the 'E' and 'H' fields are perpendicular to the wire.

A dipole antenna can only transmit the 'H' field.

Errors caused by the effect of coastal refraction on bearings at lower altitudes are maximum when the NDB is:

inland and the bearing crosses the coast at an acute angle.

inland and the bearing crosses the coast at right angles.

near the coast and the bearing crosses the coast at right angles.

near the coast and the bearing crosses the coast at an acute angle.

Which of the following lists information required to input a waypoint or Phantom Station into a basic VOR/DME based Area Navigation System?

Radial and distance from a VOR/DME to the waypoint or Phantom Station.

Magnetic track and distance from the aircraft to the waypoint or Phantom Station.

Magnetic track and distance to a VOR/DME from the waypoint or Phantom Station.

Radials from a minimum of two VORs to the waypoint or Phantom Station.

Full deflection on a glideslope indicator indicates that the aircraft is:

0.7° above or below the correct glide path.

2.5° above or below the correct glide path.

0.5° above or below the correct glide path.

1.25° above or below the correct glide path.

RNAV 4

Authored by Duy Nguyễn

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the period of validity of the navigational database for FMC units?

7 days.

14 days.

21 days.

28 days.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The principle of operation of an ILS is:

the difference in depth of modulation.

the phase comparison.

the difference between the frequencies of the two tones.

modulation of the ILS frequency by the amplitude of two modulating signals.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Clock bias is the process of correcting the pseudorange for:

receiver clock errors.

satellite clock errors.

receiver and satellite clock errors.

UTC errors.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements is correct with respect to a RF signal:

the plane of polarisation is determined by the oscillator unit in the transmitter.

the electrical component of the signal is parallel to the antenna.

the magnetic component of the signal is parallel to the antenna.

both the electrical and magnetic components are parallel to the antenna.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In order to determine 'ionospheric delay' corrections on a civilian aeroplane:

the signals from the C/A and P codes are matched.

the signals from the P code and the Y code are matched.

an 'ionospheric delay' model is stored in the receiver navigation processor. It is changed every 28 days.

an 'ionospheric delay' model is determined from the satellite Nav message.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

On the airborne weather radar display in WX mode, different colours are used:

to display different intensity of precipitation.

to display ground height differences.

to display echoes from other aircraft.

to display clouds, indicating different levels of visibility.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Performing an ILS approach, you will fly overhead the markers in a specific order. This order is:

OM, IM (if available), MM.

OM, MM, IM (if available)

IM (if available), MM, OM.

MM, IM (if available), OM.

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RNAV 4

What is the period of validity of the navigational database for FMC units?

The principle of operation of an ILS is:

Clock bias is the process of correcting the pseudorange for:

Which of the following statements is correct with respect to a RF signal:

In order to determine 'ionospheric delay' corrections on a civilian aeroplane:

On the airborne weather radar display in WX mode, different colours are used:

Performing an ILS approach, you will fly overhead the markers in a specific order. This order is:

The frequency which corresponds to a wavelength of 8.25 m is:

Locators are: 1) High powered NDBs used for enroute and airways navigation. 2) Low powered NDBs used for airfield or runway approach. 3) Beacons with a typical range of 10-200 NM. 4) Beacons with a typical range of 10-25 NM. The combination regrouping all the correct statements is:

How many operational satellites are required for Full Operational Capability (FOC) of the satellite navigation system NAVSTAR GPS?

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