Samra: Radio Communication And Nav Aids

Question 1

Time to NDB in minutes formula

Answer 1

Time in seconds / relative bearing change

Question 2

Distance to NDB formula

Answer 2

(Ground speed in knots x time to NDB in minutes) / 60

Question 3

Bearing to station

Answer 3

MH+RB

Question 4

Vor range formula

Answer 4

1. 23 X square root altitude above station
2. 23
3. 23x square root height of station plus height of terrain around station

Question 5

An ILS Localizer provides valid and reliable signal coverage out to 10 nm at a spay of how many degrees per side?

Answer 5

35

Question 6

Certified airport, aircraft following the on slope signal PA PI are provided with safe obstruction clearance to a minimum of

Answer 6

6° on either side of the extended runway centreline out to 7.5 km from the runway threshold

Question 7

VLF radio range

Answer 7

3 to 30 kHz

Question 8

What is CPDLC?

Answer 8

Controller Pilot data link communications, text message communication

VHF

Question 9

ACARS

Answer 9

Aircraft communications addressing and reporting system, receives update messages of weather conditions along with Plan and route, and send messages about the conditions of onboard equipment. ACARS transmissions are made via VHF & HF and supported by satellite communications in oceanic areas

Question 10

GPS position is accurate

Answer 10

 horizontally 6 m vertically 8 m 95% of the time

Question 11

RNAV definition

Answer 11

Method of navigation permitting aircraft operation on any desired flight path within the coverage of station-referenced NAVAIDs or within the limits of the capability of self contained navaids or a combination of these

Question 12

Wave length sizes

Answer 12

The higher the frequency the smaller the wavelength. Small wave length is 10 cm for a UHF, and the bigger is 10 km for the LF

Question 13

Multilateration Is technology used to accurately locate the aircraft by measuring its distance from ground stations placed in strategic locations around an aerodrome

Answer 13

MLAT  uses ground stations that interrogate and receive replies from aircraft transponders, aircraft are located by principle known as time difference arrival, aircraft using MLAT must have mode E, C, or S transponders or ADS-B and some MLAT systems are directly linked to ADS-B

Question 14

FMS system is comprised of what?

Answer 14

FMS system is comprised of an automatic flight control system or automatic flight guidance system, flight management computer, navigation sensors (IRS or radio navigation), A control display unit and a primary flight display and or multifunction display