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COMS TEST PREP4

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COMS TEST PREP4

Question 1 of 55

1

152 VMC is:

Select one of the following:

  • O Short for Visual Meteorological conditions

  • O Concerns the way in which instrument flight rules may be interpreted

  • O Short for Very Marginal Conditions as broadcast by VOLMET

  • O Only to be used under direct air traffic control

Explanation

Question 2 of 55

1

153 A VASIS indicates through the:

Select one of the following:

  • O Location of lights positioned at the touchdown end of a runway, the vertical disposition of an aircraft with regard to the correct height down the glideslope

  • O Radio Altimeter System, the vertical separation of conflicting air traffic

  • O EICAS the vertical disposition of the aircraft in respect to an airway centre line

  • O Aircraft ILS system, the attitude and position of the aircraft in relation to the glideslope

Explanation

Question 3 of 55

1

154 The frequency range of a VDF station is:

Select one of the following:

  • O 30 MHz to 300 MHz

  • O 10 MHz to 200 MHz

  • O 3 MHz to 30 MHz

  • O 15 MHz to 400 MHz

Explanation

Question 4 of 55

1

155 VORTAC is:

Select one of the following:

  • O A combined VOR and TACAN combination where the bearing is from the VOR element and the range from the TACAN element

  • O A combined VOR and TACAN combination where the bearing is from the TACAN and the range from the VOR

  • O Range and bearing are supplied from the TACAN element and the VOR is a switch on device

  • O TACAN refined for missed approach positioning

Explanation

Question 5 of 55

1

156 A Notice to Airmen (NOTAM) is issued when:

Select one of the following:

  • O Information concerning the establishment, condition or change in any aeronautical facility, service, procedure or hazard needs to be promulgated

  • O An actual weather report is unavailable within the next period of 6 hours

  • O A TAF is not available

  • O A passenger shortfall is evident at the booking in stage

Explanation

Question 6 of 55

1

157 The standard frequency range for UHF communications is:

Select one of the following:

  • O 300 to 3000 MHz

  • O 10 to 40 MHz

  • O 3000 to 6000 MHz

  • O 30 to 300 MHz

Explanation

Question 7 of 55

1

158 A SIGMET is issued when:

Select one of the following:

  • O Significant weather phenomena which may affect the safety of the aircraft is forecast for en-route operations

  • O Snow is forecast at the destination airport

  • O SST operations are inhibited by significant solar activity

  • O Passenger handling is unavailable during the silent hours

Explanation

Question 8 of 55

1

159 The standard frequency range for HF communications is:

Select one of the following:

  • O 3 to 30 MHz

  • O 300 to 3000 MHz

  • O 30 to 300 MHz

  • O 3000 + MHz

Explanation

Question 9 of 55

1

160 CAVOK means:

Select one of the following:

  • O No cloud below 5000 feet or below the minimum sector altitude, whichever is greater; no CB, thunderstorms or precipitation; visibility 10 kms or more, no shallow fog, or low drifting snow

  • O The runway is dry

  • O No destination diversion is available

  • O No departure airfield diversion is available

Explanation

Question 10 of 55

1

161 UTC:

Select one of the following:

  • O is an abbreviation for co-ordinated universal time

  • O concerns the availability of aircraft towing facilities

  • O concerns the notification of the closure of taxiways

  • O concerns the way in which the Earth is divided into time zones and the positioning of the International Date Line

Explanation

Question 11 of 55

1

162 ETA is short for:

Select one of the following:

  • O Estimated time of arrival or estimated arrival

  • O Estimated terminal approach time

  • O Estimated terminal arrival time

  • O Equivalent time zone actual weather prefix

Explanation

Question 12 of 55

1

163 A METAR is:

Select one of the following:

  • O An actual airfield meteorological report

  • O A departure point weather forecast

  • O An actual en-route weather report

  • O A destination alternate weather forecast

Explanation

Question 13 of 55

1

164 ATIS is:

Select one of the following:

  • O Automatic Terminal Information Service

  • O Mode C

  • O A secondary surveillance radar device

  • O Provided by VOLMET

Explanation

Question 14 of 55

1

165 RCC is:

Select one of the following:

  • O A Rescue Co-ordination Centre

  • O A VOLMET service

  • O An ATIS Service

  • O Concerns radiation warnings and is measured in milli-rems or milli-Sieverts

Explanation

Question 15 of 55

1

166 A VOLMET service provides:

Select one of the following:

  • O Meteorological information for aircraft in flight

  • O Company operations information prior to departure

  • O Company information prior to arrival at destination

  • O Advises Flight Crew on the availability of Customs officials at first point of entry into the USA

Explanation

Question 16 of 55

1

167 When an aircraft lands with QNH set the altimeter will read:

Select one of the following:

  • O Airfield elevation

  • O Flight Level

  • O Zero

  • O QFE and is the same as QNH

Explanation

Question 17 of 55

1

168 SSR is:

Select one of the following:

  • O Secondary surveillance radar

  • O Primary surveillance radar

  • O Supersonic operations requirement

  • O To do with METAR and TAF information

Explanation

Question 18 of 55

1

170 The production of a radio transmission can be likened to the operation of a switchable:

Select one of the following:

  • O Transformer

  • O AC electric motor

  • O DC motor

  • O DC generator

Explanation

Question 19 of 55

1

171 One megahertz (MHz) is equal to:

Select one of the following:

  • O 1 000 000 Hz or 1000 kHz

  • O 10 000 Hz

  • O 1000 Hz

  • O 10 000 000 Hz

Explanation

Question 20 of 55

1

172 An aerial is supplied with:

Select one of the following:

  • O AC current

  • O AC and DC power

  • O DC power

  • O An effective halve wave unmodulated carrier wave

Explanation

Question 21 of 55

1

173 The radiation fields of an aerial consist of two varying elements that are perpendicular to each other:

Select one of the following:

  • O The magnetic and electrical fields

  • O The stator and rotor fields

  • O The magnetic and isogonal fields

  • O A variable carrier wave with a toroidal transmitter

Explanation

Question 22 of 55

1

174 Wavelength can be determined from the formula:
Note: In some text books, the symbol for the basic radio wave frequency is C. For calculations, it is better to use 300 000 000 m s-1 and refer all dimensions to metres or fractions thereof:

Select one of the following:

  • O 300/F = λ

  • O 300/λ = W

  • O 300/W = λ²

  • O F/300 = λ

Explanation

Question 23 of 55

1

175 Which of the following statements is correct:

Select one of the following:

  • O The lower the frequency the longer the range and the highest frequencies are attenuated by moisture and are used in radar equipment

  • O The higher frequencies do not penetrate the ionosphere

  • O The higher the frequency of a radio wave the longer the range

  • O Smooth surfaces are very poor reflectors of radio waves.

Explanation

Question 24 of 55

1

176 The maximum theoretical range of a VHF signal can be derived from the following formula:

Select one of the following:

  • O 1.25 x [? height if transmitter (ft) + ?height of receiver (ft)]

  • O Height of transmitter/height of receiver = the range in meters

  • O 1.25 x [height of transmitter (ft) + height of receiver (ft)]

  • O 1.25 x [height of transmitter² + height of receiver²]

Explanation

Question 25 of 55

1

177 A detector and a discriminator remove the intelligence from the radio waves of:

Select one of the following:

  • O AM and FM sets respectively

  • O FM sets only

  • O Radar sets only

  • O AM sets only

Explanation

Question 26 of 55

1

178 The HF radio frequency range is:

Select one of the following:

  • O 2850 to 22 000 kHz

  • O 121.5 to 243 MHz

  • O 108.0 to 117.95 MHz

  • O 2850 to 22 000 MHz

Explanation

Question 27 of 55

1

179 A radio direction finding station will use the following Q code to pass a true heading (no wind ) to an aircraft to head for that station:

Select one of the following:

  • O QUJ

  • O QGE

  • O QTF

  • O QDM

Explanation

Question 28 of 55

1

180 If QFE is set, the altimeter will read the height above the:

Select one of the following:

  • O QFE reference datum

  • O Pressure altitude of the stated reference point

  • O Standard pressure level

  • O Transition level

Explanation

Question 29 of 55

1

181 A Class B position is accurate to within:

Select one of the following:

  • O 20 NM (37 km)

  • O 15NM (9 km)

  • O 10 NM (6 km)

  • O 30 NM (48 km)

Explanation

Question 30 of 55

1

182 The order of priority when passing flight details is as follows:

Select one of the following:

  • O Callsign, aircraft type, position, heading, altitude, conditions, estimate, request

  • O Callsign, aircraft type, heading, altitude, estimate, conditions, request, position

  • O Callsign, altitude, estimate, request, position, aircraft type, heading, conditions

  • O Aircraft type, callsign, position, heading, altitude, conditions, estimate, request

Explanation

Question 31 of 55

1

183 The priority of messages, in descending order, is:

Select one of the following:

  • O Distress, urgency, direction finding messages

  • O Direction finding messages, distress, urgency

  • O Height, speed, condition

  • O Flight regularity messages, meteorological conditions

Explanation

Question 32 of 55

1

184 An example of the content of a flight regularity message is as follows:

Select one of the following:

  • O Messages concerning the servicing of the aircraft

  • O Individual requirements of passenger or crew members

  • O Individual dietary requirements of a passenger or crew member

  • O Weather on route

Explanation

Question 33 of 55

1

185 A PAN message is defined as follows:

Select one of the following:

  • O A condition concerning the safety of an aircraft or other vehicle, or of some person on board or within sight, but does not require immediate assistance

  • O Medical assistance only is required immediately after the aircraft lands

  • O A condition of being threatened by serious and/or imminent danger and of requiring immediate assistance

  • O PAN is no longer used in aircraft telecommunications

Explanation

Question 34 of 55

1

186 A request 'WORDS TWICE' means that:

Select one of the following:

  • O As a request, "communication is difficult, please send every word or group of words twice"

  • O Communication is difficult, please send all groups of words twice

  • O The receiver station is being switched off and this will be transmitted twice

  • O The alternative word, "acknowledge" need no longer be used

Explanation

Question 35 of 55

1

187 BREAK BREAK is used to:

Select one of the following:

  • O Indicate the separation between parts of a message or messages

  • O Acknowledge a diplomatic meaning to a request

  • O Means that hi-jackers are on board and assistance is required after landing

  • O Used when entering a military combat zone under military radar

Explanation

Question 36 of 55

1

188 To expedite communications, the use of phonetic spelling should not be used unless:

Select one of the following:

  • O Transmission conditions are poor and intelligibility of the message is distorted

  • O The message is to do with PAN

  • O Unless the message is to do with PAN MEDICAL

  • O The message is to do with MAYDAY

Explanation

Question 37 of 55

1

189 In VHF communications the words:

Select one of the following:

  • O OUT and OVER are not normally used

  • O GO AHEAD and I SAY AGAIN are not normally used

  • O OUT and ROGER are not normally used

  • O STANDBY and VERIFY are not normally used

Explanation

Question 38 of 55

1

190 A call to a station followed by the suffix ARRIVAL after its callsign is a transmission to:

Select one of the following:

  • O Approach control radar arrivals

  • O The tower

  • O Clearance delivery

  • O Approach control

Explanation

Question 39 of 55

1

191 The words READ BACK mean:

Select one of the following:

  • O Repeat all, or the specified part, of this message back to me exactly as received

  • O Repeat all of this message back to me

  • O Repeat squawk

  • O Repeat cleared altitude

Explanation

Question 40 of 55

1

192 An aircraft call sign shall be chosen from one of the following possibilities:

Select one of the following:

  • O The registration letters of the aircraft or, the telephony designator of the aircraft operating agency or, telephony designator of the operating agency followed by the flight identification number

  • O The registration letters of the aircraft or, the telephony designator of the operating agency

  • O The telephony designator of the operating agency and the flight identification number only

  • O The registration letters of the aircraft only

Explanation

Question 41 of 55

1

193 An aircraft call sign may be abbreviated, once contact has been established and provided that no confusion is likely to occur, to the form of:

Select one of the following:

  • O The first and at least the last two characters of the registration letters or, the telephony designator of the operating agency and at least two characters of the aircraft registration

  • O All of the registration letters only

  • O The telephony designator of the operating agency and all registration letters

  • O The telephony designator of the operating agency and the last two numbers of the flight identification

Explanation

Question 42 of 55

1

194 When a ground station wishes to broadcast information the message is prefaced by:

Select one of the following:

  • O ALL STATIONS

  • O CALL SIGNS………..

  • O AIRCRAFT IN MY VICINITY

  • O ALL CALL SIGNS

Explanation

Question 43 of 55

1

195 If an ALL STATIONS call is made:

Select one of the following:

  • O No reply is expected unless individual stations are asked to acknowledge receipt

  • O No reply is ever to be made

  • O Acknowledgement of an ALL STATIONS call is mandatory

  • O It must be repeated after an acknowledgement of receipt is made

Explanation

Question 44 of 55

1

196 The basic phraseology for transfer of control is:

Select one of the following:

  • O CONTACT (unit call sign - frequency) AT (place or time) IF NO contact (instructions)

  • O CONTROL CHANGE TO (unit call sign - frequency) OVERHEAD (place or time)

  • O TRANSFER TO (unit call sign - frequency) OVERHEAD (place or time)

  • O CHANGE TO (frequency - unit call sign)

Explanation

Question 45 of 55

1

197 A route clearance should be ideally passed to an aircraft:

Select one of the following:

  • O Prior to start when work loads are low, mistakes are less likely to happen and aircraft manoeuvring is not taking place

  • O Just prior to take-off so that the pilot gets the latest information

  • O During the Take-Off Checks

  • O During taxi

Explanation

Question 46 of 55

1

198 The words TAKE OFF are only to be used when:

Select one of the following:

  • O An aircraft is cleared for take-off or, when cancelling a take-off clearance. At all other times the words DEPARTURE or AIRBORNE is used. Readback is mandatory

  • O An aircraft is cleared to start

  • O When clearance delivery authorises its use

  • O An aircraft is cleared to line-up only

Explanation

Question 47 of 55

1

199 A radio test procedure consists of the following items:

Select one of the following:

  • O The station identification being called, the aircraft call sign, the words RADIO CHECK shall be used and the frequency being used

  • O The station identification and the words RADIO CHECK only

  • O The words RADIO CHECK only

  • O The station identification being used, the aircraft call sign and the words RADIO CHECK

Explanation

Question 48 of 55

1

200 The readability of test transmissions is classified as follows:

Select one of the following:

  • O 5 - perfectly readable to 1 - unreadable

  • O 5 - unreadable to 1 - perfectly readable

  • O Class A - perfectly readable to Class E - unreadable

  • O Class E - perfectly readable to Class A - unreadable

Explanation

Question 49 of 55

1

201 A test call shall not continue for more than:

Select one of the following:

  • O 10 seconds

  • O 8 seconds

  • O 12 seconds

  • O 5 seconds

Explanation

Question 50 of 55

1

202 A distress call content is to be as follows:

Select one of the following:

  • O 1. MAY DAY (three times if possible) on the frequency in use at the time
    2. Name of station addressed (if time permits)
    3. The aircraft identification
    4. The nature of the distress condition
    5. The intention of the person in command
    6. Present position
    7. Level (flight level, altitude, height)
    8. Heading

  • O 1. PAN (three times if possible)
    2. Aircraft
    3. Name of station addressed
    4. The aircraft identification
    5. The nature of the distress condition 6. Intentions 7. Level 8. Heading

  • O 1. MAY DAY (three times if possible) on 121.5 MHz
    2. Name of station addressed (if time permits)
    3. Aircraft identification
    4. The nature of the distress condition
    5. intention of the person in command
    6. Present position
    7. Level
    8. Heading

  • O 1. MAY DAY (three times if possible) on 249 MHz
    2. The aircraft identification
    3. He intentions of the person in command
    4. Level
    5. Present position
    6. Heading

Explanation

Question 51 of 55

1

203 On receiving a distress call, the receiving station shall:

Select one of the following:

  • O Acknowledge, take control of communications, make sure all information is made available to ATS, the operating agency and warn other stations

  • O Acknowledge and transfer control of communications to the operating agency

  • O Acknowledge and transfer the distress aircraft to another frequency to avoid air traffic control conflict

  • O Acknowledge and transfer communications control to the aircraft in distress

Explanation

Question 52 of 55

1

204 An urgency call content is to be as follows:

Select one of the following:

  • O PAN PAN PAN (on the frequency in use)
    Name of station addressed
    Identification of the aircraft
    The nature of the urgency condition
    The intention of the person in command

  • O PAN PAN PAN
    Aircraft identification
    The intention of the person in command
    Heading
    Height
    Position

  • O MAY DAY (three times - this is mandatory)
    Heading
    Position
    Level
    Aircraft identification
    The intention of the person in command

  • O PAN PAN PAN (on 121.5MHz)
    Present position
    Heading aircraft identification
    The intention of the person in command
    The identification of the station being called

Explanation

Question 53 of 55

1

205 Radar information relating to conflicting traffic should where possible be given in the following form:

Select one of the following:

  • O Relative bearing in clock terms, distance from, direction of flight of conflicting traffic, and level, type and relative speed (slow or fast). Relative movement should be described as closing, parallel, opposite direction etc

  • O Relative bearing in degrees T, speed, height and heading of conflicting traffic

  • O Relative bearing in degrees M, speed, height and heading.

  • O Relative bearing in degrees left or right, heading,speed, height

Explanation

Question 54 of 55

1

206 Wind velocity is transmitted in:

Select one of the following:

  • O Degrees magnetic and knots

  • O Degrees True and knots

  • O Degrees True and MPH

  • O Degrees magnetic and MPH

Explanation

Question 55 of 55

1

207 If an aircraft radio receiver fails the aircraft should:

Select one of the following:

  • O Transmit using the phrase TRANSMITTING BLIND DUE TO RECEIVER FAILURE at the scheduled times, or positions on the frequency in use and state the time of the next transmission. The SSR, if fitted, should be selected to 7600

  • O As above but squawk 7700

  • O As above but squawk 7500

  • O None of the above

Explanation