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COMS TEST PREP4

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COMS TEST PREP4

Pregunta 1 de 55

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152 VMC is:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 2 de 55

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153 A VASIS indicates through the:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 3 de 55

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154 The frequency range of a VDF station is:

Selecciona una de las siguientes respuestas posibles:

  • O 30 MHz to 300 MHz

  • O 10 MHz to 200 MHz

  • O 3 MHz to 30 MHz

  • O 15 MHz to 400 MHz

Explicación

Pregunta 4 de 55

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155 VORTAC is:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 5 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 6 de 55

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157 The standard frequency range for UHF communications is:

Selecciona una de las siguientes respuestas posibles:

  • O 300 to 3000 MHz

  • O 10 to 40 MHz

  • O 3000 to 6000 MHz

  • O 30 to 300 MHz

Explicación

Pregunta 7 de 55

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158 A SIGMET is issued when:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 8 de 55

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159 The standard frequency range for HF communications is:

Selecciona una de las siguientes respuestas posibles:

  • O 3 to 30 MHz

  • O 300 to 3000 MHz

  • O 30 to 300 MHz

  • O 3000 + MHz

Explicación

Pregunta 9 de 55

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160 CAVOK means:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 10 de 55

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161 UTC:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 11 de 55

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162 ETA is short for:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 12 de 55

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163 A METAR is:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 13 de 55

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164 ATIS is:

Selecciona una de las siguientes respuestas posibles:

  • O Automatic Terminal Information Service

  • O Mode C

  • O A secondary surveillance radar device

  • O Provided by VOLMET

Explicación

Pregunta 14 de 55

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165 RCC is:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 15 de 55

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166 A VOLMET service provides:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 16 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • O Airfield elevation

  • O Flight Level

  • O Zero

  • O QFE and is the same as QNH

Explicación

Pregunta 17 de 55

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168 SSR is:

Selecciona una de las siguientes respuestas posibles:

  • O Secondary surveillance radar

  • O Primary surveillance radar

  • O Supersonic operations requirement

  • O To do with METAR and TAF information

Explicación

Pregunta 18 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • O Transformer

  • O AC electric motor

  • O DC motor

  • O DC generator

Explicación

Pregunta 19 de 55

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171 One megahertz (MHz) is equal to:

Selecciona una de las siguientes respuestas posibles:

  • O 1 000 000 Hz or 1000 kHz

  • O 10 000 Hz

  • O 1000 Hz

  • O 10 000 000 Hz

Explicación

Pregunta 20 de 55

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172 An aerial is supplied with:

Selecciona una de las siguientes respuestas posibles:

  • O AC current

  • O AC and DC power

  • O DC power

  • O An effective halve wave unmodulated carrier wave

Explicación

Pregunta 21 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 22 de 55

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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:

Selecciona una de las siguientes respuestas posibles:

  • O 300/F = λ

  • O 300/λ = W

  • O 300/W = λ²

  • O F/300 = λ

Explicación

Pregunta 23 de 55

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175 Which of the following statements is correct:

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 24 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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]

Explicación

Pregunta 25 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • O AM and FM sets respectively

  • O FM sets only

  • O Radar sets only

  • O AM sets only

Explicación

Pregunta 26 de 55

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178 The HF radio frequency range is:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 27 de 55

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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:

Selecciona una de las siguientes respuestas posibles:

  • O QUJ

  • O QGE

  • O QTF

  • O QDM

Explicación

Pregunta 28 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • O QFE reference datum

  • O Pressure altitude of the stated reference point

  • O Standard pressure level

  • O Transition level

Explicación

Pregunta 29 de 55

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181 A Class B position is accurate to within:

Selecciona una de las siguientes respuestas posibles:

  • O 20 NM (37 km)

  • O 15NM (9 km)

  • O 10 NM (6 km)

  • O 30 NM (48 km)

Explicación

Pregunta 30 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 31 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • O Distress, urgency, direction finding messages

  • O Direction finding messages, distress, urgency

  • O Height, speed, condition

  • O Flight regularity messages, meteorological conditions

Explicación

Pregunta 32 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 33 de 55

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185 A PAN message is defined as follows:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 34 de 55

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186 A request 'WORDS TWICE' means that:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 35 de 55

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187 BREAK BREAK is used to:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 36 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 37 de 55

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189 In VHF communications the words:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 38 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • O Approach control radar arrivals

  • O The tower

  • O Clearance delivery

  • O Approach control

Explicación

Pregunta 39 de 55

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191 The words READ BACK mean:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 40 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 41 de 55

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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:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 42 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • O ALL STATIONS

  • O CALL SIGNS………..

  • O AIRCRAFT IN MY VICINITY

  • O ALL CALL SIGNS

Explicación

Pregunta 43 de 55

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195 If an ALL STATIONS call is made:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 44 de 55

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196 The basic phraseology for transfer of control is:

Selecciona una de las siguientes respuestas posibles:

  • 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)

Explicación

Pregunta 45 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 46 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 47 de 55

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199 A radio test procedure consists of the following items:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 48 de 55

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200 The readability of test transmissions is classified as follows:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 49 de 55

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201 A test call shall not continue for more than:

Selecciona una de las siguientes respuestas posibles:

  • O 10 seconds

  • O 8 seconds

  • O 12 seconds

  • O 5 seconds

Explicación

Pregunta 50 de 55

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202 A distress call content is to be as follows:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 51 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 52 de 55

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204 An urgency call content is to be as follows:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 53 de 55

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

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación

Pregunta 54 de 55

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206 Wind velocity is transmitted in:

Selecciona una de las siguientes respuestas posibles:

  • O Degrees magnetic and knots

  • O Degrees True and knots

  • O Degrees True and MPH

  • O Degrees magnetic and MPH

Explicación

Pregunta 55 de 55

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207 If an aircraft radio receiver fails the aircraft should:

Selecciona una de las siguientes respuestas posibles:

  • 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

Explicación