WorksheetsTNCN_2
Total questions: 114
Worksheet time: 57mins
1.What does the term "air-ground communication" mean?
a One-way communication from stations or locations on the surface of the earth
b One-way communication from aircraft to stations or locations on the surface of the earth
c Two-way communication between aircraft and stations or locations on the surface of the earth
d Any communication from aircraft to ground station requiring handling by the Aeronautical Fixed Telecommunication Network (AFTN)
2.What does the abbreviation "FIR" mean?
a Flight information required.
b Flight information region.
c Flow information received.
d Flight information radar.
3.QFE is the RTF Q-code to indicate:
a The atmospheric pressure corrected to the aircraft cockpit height.
b The atmospheric pressure referred to the highest fixed obstacle located on the surface of an aerodrome.
c The atmospheric pressure at aerodrome elevation (or at runway threshold).
d The altimeter sub-scale setting to obtain the flight level reference datum.
4.A message concerning an aircraft being threatened by grave and imminent danger, requiring immediate assistance is called:
a Flight safety message.
b Distress message.
c Urgency message.
d Class B message.
5.When transmitting time, which time system shall be used?
a Local time (LT), 24-hour clock
b Co-ordinated universal time (UTC)
c Local time (LT) A.M. and P.M.
d No specific system, as only the minutes are normally required
6.The time is 9:20 A.M. What is the correct way of transmitting this time if there is no possibility of confusion about the hour ?
a Two zero.
b Twenty.
c Two zero this hour.
d Nine twenty A.M.
7.Which of the following calls is a "general call" ?
a YX-DEF Stephenville CONTROL.
b YX-ABC, YX-BCD, YX-CDE Stephenville CONTROL.
c ALL STATIONS Stephenville CONTROL.
d YX-EFG, YX-FGH over
8.Must a "general call" be acknowledged"?
a Yes, but only from the station first called.
b No.
c Yes, from all stations in the sequence they have been addressed.
d Yes, from all stations in a random sequence.
9.Before transmitting the pilot should...:
a Make sure that the aircraft is levelled off.
b Listen out on the frequency to ensure no interference with another station already transmitting will occur.
c Always write the message and read it during the transmission.
d Make sure that the emergency frequency is tuned in at the same time
10.What is the consequence of a microphone button stuck on transmit (switched "on") ?
a The frequency cannot be used by others.
b None.
c Other stations will have to use the "words twice" technique.
d Readability will improve for all stations
11.What does the phrase "Go ahead" mean:
a Taxi on
b Proceed with your message
c Pass me the following information...
d Yes
12.What does the phrase "Roger" mean:
a A direct answer in the affirmative
b I have received all of your last transmission
c A direct answer in the negative
d Cleared for take-off or cleared to land
13.Which of these statements best describes the meaning of the phrase "Standby" ?
a Wait and I will call you
b Continue on present heading and listen out
c Select STANDBY on the SSR transponder
d Permission granted for action proposed
14.What does the term "air-ground communication" mean?
a One-way communication from stations or locations on the surface of the earth
b One-way communication from aircraft to stations or locations on the surface of the earth
c Two-way communication between aircraft and stations or locations on the surface of the earth
d Any communication from aircraft to ground station requiring handling by the Aeronautical Fixed Telecommunication Network (AFTN)
15.Which of these phrases is used if you want to communicate that a message: "Consider that transmission as not sent":
a My last transmission is cancelled
b Cancel my last message
c Forget it
d Disregard
16.What does the phrase "Read back" mean:
a Did you correctly receive this message?
b Let me know that you have received and understood this message
c Repeat all, or the specified part, of this message back to me exactly as received
d Check and confirm with originator
17.Which phrase shall be used if you want to say: "I should like to know..." or "I wish to obtain..."?
a Confirm
b Report
Acknowledge
d Request
18.Which phrase shall be used if you want to say: "Pass me the following information...":
a Say again
b Request
Report
d Check
19.Which phrase shall be used if you want to say: "An error has been made in this transmission (or message indicated). The correct version is ...":
a QNH 1017, negative QNH 1016
b QNH 1017, correction QNH 1016
c QNH 1017, negative 1016
d QNH 1017, negative I say again 1016
20.Which phrase shall be used if the repetition of an entire message is required:
a What was your message?
b Repeat your message
c Say again
d Repeat your last transmission
21.Which phrase shall be used if you want to say:"I understand your message and will comply with it":
a Will comply with your instruction
b Roger
c Wilco
d OK, will do it
22.How shall a pilot inform the control tower that he is prepared for take-off:
a Ready to go
b Ready for take-off
c Ready to line-up
d Ready for departure or ready
23.Which of these phrases is used to inform the control tower that a pilot perform a missed approach:
a Pulling up
b Overshooting
c Will make another approach
d Going around
24.What does the instruction "Orbit right" mean ?
a Make 360° turns to the right
b Turn right to avoid other traffic
c Right-hand circuits are in use
d Leave the runway to the right
25.What does the instruction "Vacate left" mean ?
a Turn left to leave the runway
b Give way to aircraft from the left
c Clear the runway immediately
d Hold position on the left side of the runway
26.What does the word "acknowledge" mean ?
a Let me know that you have received and understood this message.
b Pass me the following information.
c Repeat all of this message back to me exactly as received.
d Repeat all of your last transmission.
27.What does the word "approved" mean ?
a Permission for proposed action granted.
b That is correct.
c Authorized to proceed under the conditions specified.
d I repeat for clarity or emphasis.
28.What does the word "cancel" mean ?
a Wait and I will call you.
b A change has been made to your last clearance.
c Annul the previously transmitted clearance.
d Consider that transmission as not sent.
29.What does the word "contact" mean ?
a That is correct .
b Radar contact established .
c Listen out on (frequency) .
d Establish radio contact with ... .
30.What does the word "recleared" mean ?
a Consider that transmission as not sent.
b Permission for proposed action granted.
c An error has been made in my last transmission.
d A change has been made to your last clearance.
31.What does the phrase "break break" mean ?
a The exchange of transmissions is ended and no response is expected.
b It indicates the separation between portions of a message transmitted to an aircraft station.
c It indicates the separation between messages transmitted to different aircraft in a very busy environment.
d My transmission is ended and I expect a response from you.
32.What does the abbreviation "IMC" mean?
a In most cases.
b Instrument meteorological conditions.
c International meteorological channel.
d In meteorological conditions.
33.What does the abbreviation "SAR" mean?
a Surveillance airport radar.
b Search and rescue.
c Standard arrival route.
d Secondary altimeter responder.
34.Which phraseology is to be used to ask the control tower for permission to taxi on a runway in the direction opposite to thaht in use ?
a "Request bactrack on runway".
b "Clearance to backtrack".
c "To enter back runway".
d "Backtrack clearance".
35.What does the term "Expected Approach Time" mean:
a The time at which an arriving aircraft expects to arrive over the appropriate designated navigation aid serving the destination aerodrome
b The time at which an arriving aircraft, upon reaching the radio aid serving the destination aerodrome, will commence the instrument approach procedure for a landing
c The time at which ATC expects that an arriving aircraft, following a delay, will leave the holding point to complete its approach for a landing
d The holding time over the radio facility from which the instrument approach procedure for a landing will be initiated
36.What phrase shall be used when asking for the readability of a transmission ?
a Read you loud and clear .
b Read back .
c Report readability .
d How do you read ?
37.On the readability scale what does "readability 1" mean?
a Readable but with difficulty.
b Readable.
c Perfectly readable.
d Unreadable.
38.What is meant by the phrase "readability 2"?
a Readable but with difficulty.
b Readable.
c Unreadable.
d Readable now and then.
39.On the readability scale what does "Readability 3" mean:
a Readable but with difficulty
b No problem to understand
c Loud and clear
d Unreadable
40.What is meant by the phrase " readibility 4"?
a Readable now and then.
b Readable.
c Perfectly readable.
d Readable but with difficulty.
41.On the readability scale what does "Readability 5" mean:
a Perfectly readable
b Unreadable
c Problem to understand
d Readable but with difficulty
42.Which word or phrase shall be used if you want to say : "Wait and i will call you"?
a Roger.
b Go ahead.
c Standby.
d Wilco.
43.What is the radiotelephony call sign suffix for the aeronautical station indicating aerodrome control service:
a APRON
b CONTROL
c AERODROME
d TOWER
44.What is the radiotelephony call sign for the aeronautical station providing flight information service:
a FLIGHT CENTRE
b FLIGHT INFORMATION CENTRE
c INFORMATION
d CONTROL
45.What is the radiotelephony call sign for the aeronautical station providing surface movement control of aircraft on the manoeuvring area:
a GROUND
b APPROACH
c TOWER
d CONTROL
46.When may the name of the location or the call sign suffix in the call sign of an aeronautical station be omitted ?
a In dense traffic during rush hours
b Never
c Only after the aeronautical station has used the abbreviated call sign
d When satisfactory communication has been established and provided it will not be confusing to do so
47.When is an aircraft station allowed to use its abbreviated call sign ?
a In dense traffic
b Only after satisfactory communication has been established
c Provided no confusion is likely to result
d After it has been addressed in this manner by the aeronautical ground station
48.How should aircraft XY-ABC call Stephenville TOWER on initial call ?
a TOWER XY-ABC
b Stephenville TOWER X-BC
c Stephenville XY-ABC
d Stephenville TOWER XY-ABC
49.Aircraft X-BC has been instructed to contact Stephenville TOWER on frequency
118.7. What is the correct response to indicate that it will follow this instruction ?
a Stephenville TOWER X-BC
b Will change to TOWER X-BC
c Changing over X-BC
d 118.7 X-BC
50.Aircraft X-BC has been instructed to listen on ATIS frequency 123.25, on which information are being broadcast. What is the correct response to indicate that it will follow this instruction ?
a Checking 123.25 X-BC
b Changing to 123.25 X-BC
c Will contact 123.25 X-BC
d Monitoring 123.25 X-BC
51.Aircraft XY-ABC is making a test transmission with Stephenville TOWER on frequency 118.7. What is the correct phrasing for this transmission:
a Stephenville TOWER XY-ABC signal check
b Stephenville TOWER XY-ABC preflight check
c Stephenville TOWER XY-ABC radio check 118.7
d Stephenville TOWER XY-ABC frequency check
52.Which elements of instructions or information shall always be read back ?
a Surface wind, visibility, ground temperature, runway-in-use, altimeter settings, heading and speed instructions
b Runway-in-use, visibility, surface wind, heading instructions, altimeter settings
c Runway-in-use, altimeter settings, SSR codes, level instructions, heading and speed instructions
d Time check, runway-in-use, altimeter settings, level instructions, SSR codes
53.Shall an ATC route clearance always be read back:
a No, if the communication channel is overloaded
b No, if the ATC route clearance is transmitted in a published form (e.g. Standard Instrument Departure Route/SID)
c Yes, unless authorized otherwise by ATS authority concerned
d No, if the content of the ATC clearance is clear and no confusion is likely to arise
54.An aircraft is instructed to hold short of the runway-in-use. What is the correct phraseology to indicate it will follow this instruction ?
a Wilco
b Holding short
c Will stop before
d Roger
55.Cherokee XY-ABC receives the following instruction: "X-BC climb straight ahead until 2500 feet before turning right, wind 270 degrees 6 knots, cleared for take off”. What is the correct read back:
a Straight ahead, 2500 feet right turn, wind west 6 knots, cleared for take-off, X-BC
b Wilco, cleared for take-off, X-BC
c Right turn after 2500, roger, X-BC
d Straight ahead, at 2500 feet right turn, cleared for take-off, X-BC
56.How should a pilot terminate the read-back of an ATC clearance ?
a With the word "roger"
b With the word "wilco"
c With the ATC ground station call sign
d With his own aircraft call sign
57.An aircraft is flying north-east at 2500 feet.TOWER requests heading and level. What is the correct response:
a 045 and 2500
b Heading north-east at level 25
c Heading 45 at 2500 feet
d Heading 045 at 2500 feet
58.What does the phrase "Squawk 1234" mean:
a Give a short count for DF (direction finder)
b Select code 1234 on the SSR transponder
c Make a test transmission on 123.4 MHz
d Standby on frequency 123.4 MHz
59.RADAR informs aircraft X-BC: "X-BC identified". What does this mean:
a Radar identification has been achieved
b X-BC is not visible on the radar screen
c X-BC should perform an identification turn
d X-BC should operate the IDENT-button
60.RADAR instructs aircraft X-BC: "X-BC squawk ident". What does this mean:
a X-BC shall reselect his assigned mode and code
b Radar identification has been achieved by correlating an observed radar blip with aircraft XY-ABC
c X-BC should perform an identification turn of at least 020 degrees
d X-BC shall operate the IDENT button
61.RADAR instructs aircraft X-BC: "X-BC squawk standby ". What does this mean?
a X-BC is requested to standby on the frequency
b X-BC is requested to switch to standby position
c X-BC is requested to standby for radar vectors
d X-BC is requested to standby as the radar controller is busy
62.RADAR instructs aircraft X-BC: "X-BC recycle 1015". What does this mean:
a X-BC has been identified at 10:15 (UTC)
b X-BC is requested to set new code 1015
c X-BC has been identified by SSR code 1015
d X-BC is requested to reselect SSR code 1015
63.When the term "Scattered" is used in an aviation routine weather report (METAR), the amount of clouds covering the sky is:
a More than half but less than overcast (5 to 7 oktas)
b Half or less than half (3 or 4 oktas)
c Sky entirely covered (8 oktas)
d No clouds below 5000 feet/GND
64.When the term "Broken" is used in an aviation routine weather report (METAR), the amount of clouds covering the sky is:
a 5 to 7 oktas
b 1 to 4 oktas
c 8 oktas below 10000 feet
d No clouds below 5000 feet
65.When the term "Overcast" is used in an aviation routine weather report (METAR), the amount of clouds covering the sky is:
a 50% or more
b 100%
c Less than 50%
d No clouds but poor ground visibility
66.When the term "CAVOK" is used in an aviation routine weather report (METAR), the values of visibility and clouds are:
a Visibility more than 5000 m, no clouds below 1500 m/GND
b Visibility 10 km or more, no clouds below 1500 feet/GND
c Visibility more than 8 km, no clouds below 3000 feet/GND
d Visibility 10 km or more, no clouds below 5000 feet/GND
67.What is the correct way of expressing visibility ?
a Visibility 1.2 kilometres
b Visibility 1200 feet
c Visibility 1.2 nautical miles
d Visibility 1200 metres
68.What action is required by the pilot of an aircraft station if he/she is unable to establish radio contact with an aeronautical station ?
a Squawk mode A code 7500
b Divert to the alternate airport
c Try to establish communication with other aircraft or aeronautical stations
d Land at the nearest aerodrome appropriate to the route of flight
69.If all attemps to establish radio contact with a ground station fail, the pilot of an airplane shall transmit messages preceded by the phrase:
a "How do you read?"
b "Read you one, read you one"
c "Transmitting blind"
d PAN PAN, PAN PAN, PAN PAN
70.Under which of the following circumstances shall an aircraft station squawk 7600?
a In case of radio communication failure
b When entering bad weather areas
c When approaching a prohibited area
d When flying over desert areas
71.When shall the pilot of an aircraft experiencing communications failure keep a watch for instructions passed by visual signals ?
a When entering a FIR during an IFR flight
b When flying VFR above clouds
c When the aircraft is entering the traffic pattern of an uncontrolled airport
d When the aircraft is forming part of the aerodrome traffic at a controlled aerodrome
72.An aircraft is squawking 7600. This indicates:
a It is diverting to the alternate aerodrome
b It is unable to establish communication due to radio equipment failure
c It is requesting immediate level change
d It is about to make a forced landing
73.An aircraft station fails to establish radio contact with an aeronautical station on the designated frequency. What action is required by the pilot:
a Return to the airport of departure
b Continue the flight to the destination airport without any communication
c Attempt to establish contact with the station on an alternative frequency
d Land at the nearest airport without an ATC unit
74.An aircraft in distress shall send the following signal by radiotelephony:
a PAN PAN, PAN PAN, PAN PAN
b DETRESFA, DETRESFA, DETRESFA
c MAYDAY, MAYDAY, MAYDAY
d URGENCY, URGENCY, URGENCY
75.The frequency used for the first transmission of a "MAYDAY" call shall be:
a The distress frequency 121.5 MHz
b The frequency currently in use
c Any other international emergency frequency
d Any frequency at pilot's discretion
76.The distress message shall contain as many as possible of the following elements/details:
a Aircraft call sign, nature of distress, pilot's intention, present position, level and heading
b Aircraft call sign, route of flight, destination airport
c Aircraft call sign, aerodrome of departure, position and level
d Aircraft call sign, present position, assistance required
77.Which of the following frequencies is an international emergency frequency:
a 122.500 MHz
b 121.500 MHz
c 6500 KHz
d 121.050 MHz
78.An aircraft squawking 7700 indicates to the ground station that:
a The aircraft's transceiver is unserviceable
b The aircraft is being hijacked
c The aircraft is in distress
d There is a sick passenger on board
79.Urgency is defined as:
a A condition of being threatened by serious and/or imminent danger and of requiring immediate assistance
b A condition concerning the safety of a person on board or within sight and requiring immediate assistance
c A condition concerning the attitude of an aircraft when intercepting the localizer during an ILS approach
d A condition concerning the safety of an aircraft other vehicles or of a person on board, but which does not require immediate assistance
80.An urgency message shall be preceded by the radiotelephony urgency signal:
a ALERFA, spoken three times
b URGENCY, spoken three times
c MAYDAY, spoken three times
d PAN PAN, spoken three times
81.Which frequency shall be used for the first transmission of an urgency call:
a The international emergency frequency
b The air-ground frequency in use at the time
c The regional guard frequency
d Any frequency at pilot's discretion
82.Which is the frequency band containing frequencies of the Aeronautical Mobile Service?
a 108.000 - 117.975 MHz
b 118.000 - 136.975 MHZ
c 1810 - 2850 KHz
d 11650 - 13200 KHz
83.To which frequency bands do the frequencies 118.000 - 136.975 MHz of the Aeronautical Mobile Service belong ?
a Medium frequency
b Very low frequency
c Low frequency
d Very high frequency
84.Which is the frequency separation between consecutive frequencies in the VHF band
a 75 KHz
b 50 KHz
c 25 KHz
d 250 KHz
85.What are the propagation characteristics of VHF:
a The waves travel along the surface of the earth and penetrate into valleys in a way that topographical obstacles have no influence
b The waves are reflected at the ionosphere at the height of about 100 km and reach the earth surface in the form of sky-waves
c Practically straight-line similar to light waves
d Similar to short waves with practically no atmospheric disturbance
86.Which phenomena will normally influence the reception of VHF transmission ?
a Level of aircraft and terrain elevations
b The ionosphere
c Electrical discharges as they happen frequently in thunderstorms
d Day- and night effect
87.When flying in accordance with IFR, which of the following best describes the term "Visual approach" ?
a An approach by an IFR flight when either part or all of an instrument approach procedure is not completed and the approach is executed in visual reference to terrain
b An approach executed by an IFR flight unable to maintain VMC
c A visual manoeuvre executed by an IFR flight when the weather conditions at the aerodrome of destination are equal to or better than required VMC minima
d An extension of an instrument approach procedure to bring an aircraft into position for landing on a runway which is not suitably located for straight-in-approach
88.What does the term "clearance limit" mean:
a The time after which an air traffic control clearance will be automatically cancelled if the flight has not been commenced
b The time of expiry of an air traffic control clearance
c The time at which an aircraft is given an air traffic control clearance
d The point to which an aircraft is granted an air traffic control clearance
89.An "Automatic Terminal Information Service" provides:
a Information concerning en-route weather phenomena which may effect the safety of aircraft operation.
b Routine information to arriving and departing aircraft by means of continuous and repetitive broadcast .
c Current meteorological and operational information essential for the safety of the air navigation within a FIR.
d Weather reports relating a specific number of aerodromes located within a flight information region (FIR).
90.What does the term "way point" mean:
a A general term meaning the taxiway- and the runway-system of an international airport
b A defined position on an aerodrome used for the calibration of the inertial navigation system
c A signal indicating the direction of the runway-in-use
d A specified geographical position used to define an area navigation route or the flight path of an aircraft employing area navigation
91.What does the abbreviation "INS" mean:
a Instrument navigation system
b Inertial navigation system
c International NOTAM system
d International navigation service
92.What does the abbreviation "SSR" mean:
a Standard snow report
b Search and surveillance radar
c Surface strength of runway
d Secondary surveillance radar
93.What does the abbreviation "RVR" mean:
a Runway visibility report
b Radar vectors requested
c Runway visual range
d Recleared via route...
94.To indicate that he is no longer occupying the active runway a pilot shall report to the controller :
a Runway vacated.
b Runway cleared.
c Runway free.
d Clear of runway
95.When an aeronautical station broadcasts information to more than one station, the call starts with :
a "Message to all aircraft on this frequency"
b "General broadcast"
c "All stations"
d "Please listen"
96.What is the radiotelephony call sign for the aeronautical station providing approach control (no radar service) ?
a RADAR
b ARRIVAL
c APPROACH
d CONTROL
97.What is the radiotelephony call sign for the aeronautical station indicating area control centre (no radar):
a ...APPROACH
b ...CENTRE
c ...CONTROL
d ...RADAR
98.What is the radiotelephony call sign for the aeronautical station indicating approach control radar departures:
a ...RADAR
b ...CONTROL
c ...DEPARTURE
d ...APPROACH
99.What is the radiotelephony call sign for the aeronautical station indicating approach control radar arrivals:
a ...ARRIVAL
b ...APPROACH
c ...RADAR
d ...DIRECTOR
100.What is the radiotelephony call sign suffix for the aeronautical station providing radar service (in general) ?
a RADAR.
b CONTROL.
c RADAR-CONTROL.
d RADAR-SERVICE.
101.What, if any, is the abbreviated call sign of Fastair 2345 ?
a No abbreviated form
b Fastair 345
c Fastair 45
d 2345
102.What is the correct call sign of Fastair 345 in the initial call to the aerodrome control tower and the approach control unit, if the aircraft has a maximum take-off weight of more than 136 tonnes:
a Fastair 345
b Heavy Fastair 345
c Fastair 345 heavy
d Fastair 345 widebody
103.When shall an aircraft in the heavy-wake-turbulence category include the word "Heavy" immediately after its call sign e.g. Fastair 345 heavy:
a In the initial call to the aerodrome control tower and the approach control unit
b Never
c In all calls
d In all calls to the aerodrome tower and the approach control unit
104.During radar vectoring, the controller asks the pilot of XY-ABC to turn on to heading 360°. The correct read back of this instruction is :
a A read back is not necessary as XY-ABC has been identified
b Heading north, X-BC.
c Heading three hundred sixty, X-BC.
d Heading three six zero, X-BC.
105.If you are requested to "Report flight conditions", what does that mean:
a Indicate weather conditions as wind, visibility, temperature
b Indicate whether you are flying in IMC or in VMC
c Indicate if visibility is sufficient for landing
d Indicate whether you are flying IFR or VFR
106.Which of the following messages sent by ATC to an aircraft in flight must be read back?
1 - "descend to (altitude) 3.000 feet"
2 - "wind 240°, 15 knots, gusts 30 knots"
3 - "turn right heading 210"
4 - "reduce speed to 160 knots"
5 - "squawk 1723"
6 - "braking action poor"
a 1, 2, 3, 5
b all
c 1, 3, 4, 5
d 1, 3, 4, 5, 6
107.What is the correct way for the pilot to acknowledge that ATIS Information Golf has been received:
a Information Golf
b Weather Golf received
c We have the Information
d We have the ATIS Golf
108.What does the word "Monitor" mean:
a Examine a system or procedure
b Wait and I will call you
c Establish radio contact with...
d Listen out on (frequency).
109.What does the instruction: "Fastair 345 standby 118.9 for TOWER" mean:
a Fastair 345 should standby on the current frequency
b Fastair 345 should change frequency to 118.9, on which aerodrome data are being broadcast
c Fastair 345 should contact TOWER on 118.9
d Fastair 345 should listen on frequency 118.9 on which TOWER will initiate further communications
110.Fastair 345 has been instructed to contact Stephenville ARRIVAL on frequency
118.0. What is the correct way to indicate it will follow this instruction:
a Changing to ARRIVAL Fastair 345
b Changing over Fastair 345
c 118.0 Fastair 345
d Stephenville ARRIVAL Fastair 345
111.Which phraseology shall a pilot use if he receives an instruction from ATC which he cannot carry out:
a Unable to comply
b Negative instruction
c Impossible to make it
d Disregard
112.Which phrase should a pilot use to inform ATC that he is initiating a missed approach procedure:
a Going around
b Missed approach
c Pulling up
d Overshooting
113.What shall the pilot's readback be for "Climb to FL 280":
a Climbing to flight level two eighty
b Climbing to flight level two eight zero
c Climbing two eight zero
d Climbing to two eighty
114.ATC clears Fastair 345 to descend from FL 100 to FL 80. What is the correct readback by the pilot:
a Descending to 80, Fastair 345
b Leaving flight level 100 descending to flight level 80, Fastair 345
c Down to flight level 80, Fastair 345
d Leaving 100 to 80, Fastair 345
