Radio Navigation - ATPL - Airline Transport Pilot license

Question 1

An aircraft, at FL 410 is passing overhead a DME station at mean sea level. The DME indicates approximately:

Accepted Answer

6.8 NM

Answer

6.1 km

Answer

6.1 NM

Answer

6.8 km

Question 2

Airborne weather radar systems use a wavelength of approximately 3 cm in order to:

Accepted Answer

Detect the larger water droplets

Answer

Obtain optimum use of the cosecant squared beam

Answer

Transmit at a higher pulse repetition frequency for extended range

Answer

Detect the smaller cloud formations as well as large

Question 3

For a conventional DME facility 'Beacon Saturation' will occur whenever the number of aircraft interrogations exceeds:

Accepted Answer

100

Answer

60

Answer

200

Answer

80

Question 4

In relation to the satellite navigation system NAVSTAR/GPS, ''All in View'' is a term used when a receiver:

Accepted Answer

Is tracking more than the required 4 satellites and can instantly replace any lost signal with another already being monitored.

Answer

Is receiving and tracking the signals of all 24 operational satellites simultaneously

Answer

Is receiving the signals of all visible satellites but tracking only those of the 4 with the best geometric coverage

Answer

Requires the signals of all visible satellites for navigation purposes

Question 5

The maximum theoretical range at which an aircraft at FL230 may receive signals from a VOR facility sited at mean sea level is:

Accepted Answer

190 NM

Answer

170 NM

Answer

230 NM

Answer

151 NM

Question 6

What is EGNOS (European Global Navigation Overlay System)?

Accepted Answer

Wide Area Differential GPS (WADGPS)

Answer

Local Area Differential GPS (LADGPS)

Answer

GLONASS

Answer

Local Area Augmentation System (LAAS)

Question 7

An aircraft DME receiver does not lock on to its own transmissions reflected from the ground because:

Accepted Answer

They are not on the receiver frequency

Answer

DME transmits twin pulses

Answer

DME uses the UHF band

Answer

The pulse recurrence rates are varied

Question 8

The aircraft DME receiver is able to accept replies to its own transmissions and reject replies to other aircraft interrogations because:

Accepted Answer

The time interval between pulse pairs is unique to that particular aircraft

Answer

Pulse pairs are amplitude modulated with the aircraft registration

Answer

Aircraft interrogation signals and transponder responses are 63 MHz removed from each other

Answer

Transmission frequencies are 63 MHz different for each aircraft

Question 9

The Flight Management System (FMS) is organised in such a way that the pilot can:

Accepted Answer

Insert navigation data between two database updates

Answer

Modify the database every 14 days

Answer

Modify the data in the database between two updates

Answer

Read and write at any time in the database

Question 10

3D RNAV fixing gives you:

Accepted Answer

Horizontal and vertical profile guidance

Answer

2D RNAV plus speed control

Answer

2D RNAV plus time guidance

Answer

Horizontal, vertical profile and time guidance

Exam questions Radio Navigation - ATPL - Airline Transport Pilot license

ATPL - Airline Transport Pilot license: Radio Navigation 10 Questions no time limit

Exam questions Radio Navigation - ATPL - Airline Transport Pilot license

ATPL - Airline Transport Pilot license: Radio Navigation 10 Questions no time limit

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