Radio Aids & Flight Planning 100 Questions

Question 1

The slaved gyro magnetic compass (gyrosyn) minimizes the oscillations and turning errors associated with P-Type magnetic compasses through the utilization of a ?

Answer 1

Directional gyro unit slaved to a remote compass transmitter

Question 2

Frequency is? (Definition)

Answer 2

The number of cycles per second

Question 3

The distance between the transmitting antenna and the point where the sky wave first returns to the surface of the earth is called the _________?

Answer 3

Skip distance

Question 4

What statements is true with reference to propagation of radio ground waves?

Answer 4

As the frequency increases ground wave attenuation increases to provide less reception distance.

Question 5

When navigating by the use of the ADF, pilots should be aware that coastal refraction error is most pronounced when the radio beam being received by the aircraft from an inland NDB crosses the shoreline at an angle of ?

Answer 5

Less than 30°

Question 6

How can a pilot determine of the ADF is still in reception range of the tuned NDB?

Answer 6

Listen to the Morse code ident for the tunned NDB to endure positive tracking

Question 7

A pilot is flying IFR within controlled airspace. The aircraft is equipped with 2 VOR receivers, 2 Dames and 1 ADF. The ADF malfunctions and is rendered unserviceable. The pilot should?

Answer 7

Advise ATS of the failure immediately

Question 8

How do the operating limitations differ between and NDB and a VOR?

Answer 8

Use of a VOR is limited by line of sight, while use of an NDB is limited by signal attenuation.

Question 9

What statements about VOR is correct?

Answer 9

It depends upon a phase difference between 2 signals transmitted simultaneously from a ground station.

Question 10

What is the minimum reception distance and height for a VOR signal assuming no terrain interference?

Answer 10

40nm at 1000’

Question 11

When flying an aircraft equipped with dual VOR receivers, you may check the accuracy of the sets against each other on the ground of in the air. What is the tolerance?

Answer 11

+/- 4° Ground
+/-4° Air

Question 12

You are passing abeam a VOR station and you note that the CDI is fully deflected, and there is no TO/FROM indication. The reason for this indication is?

Answer 12

That the aircraft is crossing a radial at 90° to the one selected on the OBS

Question 13

With reference to the instrument below, ATC has cleared you intercept the 320° radial inbound at an intercept angle of 90°. You would fly a heading of ______ and select _______ on the OBS.

Answer 13

050°, 140

Question 14

What statements is true with reference to a radio magnetic indicator (RMI)

Answer 14

The RMI is an instrument which can provide heading and magnetic bearing information to LF/MF and VHF omnidirectional range facilities.

Question 15

What statements describe the opening principle is distance measuring equipment (DME)

Answer 15

The measurement of the time between the transmission of an aircraft interrogating signal and the receipt of a matched pulse reply signal from a ground station (the 2 signals having different frequencies)

Question 16

An ILS localizer provides valid and reliable signal coverage of _____ ° either side of the front course out to a distance of 10nm.

Answer 16

35°

Question 17

An ILS localizer signal is considered to be reliable to approximately 10° splay between ___ & ___

Answer 17

10 & 18nm

Question 18

The CDI needle indications from center to “full scale” for VOR and ILS/localizers are respectively:

Answer 18

10° and 2,5°

Question 19

What is the total depth of an ILS glide path beam?

Answer 19

1,4°

Question 20

What statements is true with reference to single sideband (SSB) HF radios ?

Answer 20

SSB transmitters eliminate one sideband and all or most of the carrier wave in order to increase transmission power; the carrier is reinserted by the receiver to reproduce the original message.

Question 21

Is it possible to increase the reception range on an HF radio by changing frequencies?

Answer 21

Yes, by using lower frequencies at night, and higher frequencies during the day.

Question 22

SELCAL operates with a single selective call consisting of a combinaison of four preselected audio tones requiring approximately 2 seconds transmission time. The tones are generated:

Answer 22

In the ground station coder and are received by a decoder in the airborne receiver.

Question 23

What statements can we do in respect to HF radio operation I. North Atlantic airspace (NAT)?

Answer 23

-Fully functioning HF communication equipment is requirement for unrestrictive operations.
-On first voice contact with Oceanic communication centers (OCCs), flight crews are required to request a SLECAL check with the OCCs to verittje operation of the SELCAL equipment.
- When turning a HF radio frequency, a long sidetone tuning cycle could indicate a faulty HF radio

Question 24

What statements is correct with respect to the principle of operation of an inertial navigation system (INS)

Answer 24

It measures acceleration against time to determine speed and position

Question 25

An INS system is capable of providing?

Answer 25

-Steering information to the autopilot
-Aircraft attitude information for the flight instruments.
-Antenna stabilisation for airborne weather radar
-Horizontal navigation data

Question 26

True statement with reference to an inertial navigation system (INS)

Answer 26

It utilizes accelerometers, in a gimbal assembly, to sense all vertical and horizontal accelerations to provide position and steering information.

Question 27

Inertial reference systems…

Answer 27

Operate using a strap-down system with ring laser gyros which ring laser gyros which measure rate of rotation.

Question 28

Correct statement with regards to IRS/FMS system:

Answer 28

The navigation solution is provided by the flight management system which is integrated with the IRSs.

Question 29

What statement is correct with respect to the operation of GPS?

Answer 29

Position triangulation is provided by measuring distances from satellites by precise timing of radio Signals

Question 30

What statement is true with reference to GNSS overlay approaches?

Answer 30

Pilots are also allowed to fly a GPS overlay approach when traditional underlying navigation aid is temporarily out of service.

Question 31

A pilot may take credit for a GPS based approach at an alternate airport when ?

Answer 31

-The destination and alternate airports only have GNSS approaches, are separated by at least 100 and one or both airports are not located in Nunavut, or north of 56° North latitude in Quebec and Labrador.
-Published LNAV minima are the lowest landing limits for which credit may be taken when determining alternate weather minima requirements.
-For GPS units that do not have FDE (Fault detection & exclusion), the pilot must perform a RAIM prediction at least once before the mid-point of the flight to the destination

Question 32

Without RAIM capability, the pilot of a non-WAAS GPS-equipped aircraft?

Answer 32

Will have no assurance of the accuracy of the GPS position

Question 33

TSO C129 (a)-compliant GPS avionics must be capable of automatically increasing the CDI display sensitivity as an aircraft moved closer to the airport during a GPS approach. This “stepping-up” or “tightening” of CDI sensitivity provides for the greater tracking accuracy required during the terminal and approach phases. What statement regarding GPS avionics operation during an approach?

Answer 33

-When the aircraft reaches 30nm or less from destination and an approach for that airport has been loaded into the flight plan, the CDI sensitivity automatically changes from +/- 5nm to the terminal value of +/- 1nm (full scale deflection).
-At a distance of 2nm inbound to the final approach fix waypoint the CDI display sensitivity begins to transition to the approach value of +/-0.3nm and will have achieved this extra sensitivity by the time the aircraft passes the FAF waypoint.
-If RAIM is not available when crossing the final approach fix waypoint, the pilot must execute the missed approach procedure.

Question 34

What statements that relates to the RAIM component of a TSO C-129 compliant GPS receiver?

Answer 34

If RAIM is not available prior to crossing the final approach waypoint during an approach, the GPS receiver will not go into the approach “ACTIVE” mode.

Question 35

WAAS-corrected GPS signals offer approximately 5 times greater position accuracy than basic or uncorrected GPS signals. Another true statement related to the use of this satellites-based augmentation system would be?

Answer 35

WAAS geo satellites provide a ranging signal which improves availability.

Question 36

Statements relate to GPS stand-alone approaches. (Plusieurs)

Answer 36

-Stand-alone approach design is usually based on a “T” pattern of waypoints which eliminates the need for a procedure turn.
-GPS stand-alone approaches are charted as “RNAV (GNSS) RWY XX”
-General aviation pilots do not require a special license endorsement to qualify then to conduct GPS stand-alone approaches.

Question 37

Prior to commencing a GPS-based approach, pilot using TSO C129/129 (a) avionics should?

Answer 37

Use the RAIM prediction feature to ensure that approach-level RAIM will be supported for the ETA (+/- 15min)