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Communications Flashcards

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1
Q

What is VHF radio used for in aviation?

A

Within line of sight transmission

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2
Q

What is HF radio used for in aviation?

A

Long range communication, shared frequencies

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3
Q

What is a datalink used for in aviation?

A

Long distance satellite communications

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4
Q

What is the VSCS used for?

A

Voice Switch and Control System; coordination with other controllers

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5
Q

What is the AIDC used for?

A

ATS Inter-Centre Data Communication; data comms with other ATS facilities

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6
Q

What is the AFTN used for?

A

Aeronautical Fixed Telecommunication Network; international exchange of aeronautical data

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7
Q

What is a radio report?

A

A mandatory radio report from an aircraft to the appropriate ATS unit.

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8
Q

What is a radio broadcast?

A

A radio broadcast from an aircraft on the appropriate frequency to provide advisory traffic information to other aircraft.

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9
Q

What are the comms requirements for RPT aircraft?

A

VHF and HF or 2VHF in Classes A, C, D, E & G

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10
Q

What are the comms requirements for CHTR aircraft?

A

VHF or HF (when VHF does not allow continuous comms) in Classes A, C, D, E & G

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11
Q

What are the comms requirements for IFR aircraft?

A

VHF or HF (when beyond VHF range of ATS units) in Classes A, C, D, E & G

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12
Q

What are the comms requirements for NGT VFR aircraft?

A

VHF in Classes A, C, D, E & G

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13
Q

What are the comms requirements for VFR aircraft?

A

VHF in Classes A, C, D & E

VHF in Class G when at 5,000ft or above

VHF in Class G at those aerodromes where the carriage and use of radio is required

VHF in Class G below 3,000FT AMSL or 1,000FT AGL in reduced VMC

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14
Q

What are the comms requirements for gliders?

A

VHF in Class G when operating at aerodromes serviced by RPT aircraft

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15
Q

What does AIP ENR 1.1 say about IFR aircraft that cannot establish contact with ATS on the ground prior to departure?

A

The pilot of an IFR aircraft operating from a non-controlled aerodrome must attempt to contact ATS on VHF or HF when taxiing. If the pilot is unable to establish contact, the flight may proceed on a broadcast basis provided contact is established as soon as possible after takeoff, and:

a) In the case of an RPT, CHTR or AWK flight, the pilot is assured of radio contact with his or her operator, or a representative of his or her operator who has immediate access to a serviceable telephone, until contact is made with ATS, or
b) For flights other than RPT, a SARTIME for departure has been established with a maximum of 30 minutes from EOBT.

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16
Q

Which chart can be used to see areas where continuous VHF communications are expected, and at which altitudes does it depict these areas?

A

Planning Chart Australia (PCA).

5,000ft - light purple
10,000ft - dark purple

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17
Q

What function does the Idle VSCS key perform?

A

Transmissions from this frequency will not be sent or received on your console.

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18
Q

What function does the Monitor VSCS key perform?

A

Listen to a frequency, but does not allow you to transmit.

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19
Q

What function does the Traffic VSCS key perform?

A

Will allow you to transmit on the selected group of VHF frequencies.

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20
Q

What function does the Group VSCS key perform?

A

Will allow you to transmit on the selected group of VHF frequencies.

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21
Q

What function does the Retransmit VSCS key perform?

A

Will establish a retransmission network when you have control of multiple VHF frequencies. Pilots on one frequency will be able to hear pilots broadcasting on other frequencies on the network.

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22
Q

What are the Hotline VSCS keys?

A

Coordination lines that, once selected, will open immediately and the sender or receiver is able to start talking straight away.

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23
Q

What are the Coldline VSCS keys?

A

Coordination lines that require an answer from the receiver before voice communications can begin.

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24
Q

What are the Indirect Access VSCS keys?

A

In the event of failure of the communications network the Indirect Access function allows the controller to access the regular public telephone system.

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25
What are some of the functions of the SELCAL system?
Selective Calling System - Alerts the crew to an incoming HF or VHF radio call with a chime and flashing light. - Aircraft code is a group of four letters - Tones are transmitted as a series of audio tones - Used only for ground to air calling
26
What are some of the limitations of the SELCAL system?
- Signal does not identify its source - The pilot must ascertain the ground station calling - No ‘hash reduction’ advantage to the ground operator - Aircraft must be suitably equipped - Pilots have no situational awareness of close proximity traffic
27
What is the CPDLC and what are some of it's functions?
Controller Pilot Data Link Communication - Datalink system for ATC - pilot communication - Onboard printing - Auto-load of certain uplink messages into the FMS - Downlink of complex route requests which can be returned with approval - Downlink messages and some responses to uplink messages that automatically update the FDR
28
What is the AIDC and what are some of it's functions?
ATS Inter-Centre Data Communication - Passes information from controller console to console across FDRG boundaries - Provides snapshot updates to the ATC system receiving a flight - Ensures controllers have up-to-date flight data available and in some cases acquits the requirement for coordination between controllers in different control centres
29
What is an ABI?
Advance Boundary Information; sent at a pre-set time prior to the aircraft’s estimate for the boundary. This will provide a snapshot update of the FDR.
30
What is a PAC?
Preliminary Activation Message; sent at a time prior to departure in place of the ABI for departures close to the boundary.
31
What is an EST?
Estimate; provides an update of the CFL and estimate for the boundary. This may replace coordination.
32
What is an ACC?
Acceptance; sent by the receiving centre to indicate the system has received and processed an EST message. An “A” indicates to the sending controller that the message has been accepted.
33
What is a TOC?
Transfer of Control; offers control authority to the receiving centre. This is initiated by the sending controller prior to transferring to the receiving centre’s frequency.
34
What is an AOC?
Acceptance of Control; the controller in the receiving centre is ready to assume control authority. This finishes the FDR in the sending centre.
35
What is the AFTN and what are some of it's functions?
Aeronautical Fixed Telecommunication Network - Performs international data exchange between aeronautical authorities - Messages must adhere to ICAO messaging conventions - Controllers enter information into the FDR in line with ICAO syntax and semantics - Message is sent by the FDC (flight data coordinator), not the controller
36
What is the AFTN Message Priority SS?
Emergency
37
What is the AFTN Message Priority DD?
Urgency
38
What is the AFTN Message Priority FF?
Movement and Control Messages
39
What is the AFTN Message Priority GG?
Flight Information Messages
40
What is the AFTN Message Priority KK?
Administrative
41
What is the AFTN Message Type FPL?
Flight Plan
42
What is the AFTN Message Type CHG?
Change
43
What is the AFTN Message Type DEP?
Departure
44
What is the AFTN Message Type ARR?
Arrival
45
Interpret the AFTN line "YMMLJSTX". Identify each element.
``` YMML = Location (Melbourne) JST = Aeronautical Authority (Jetstar) X = Department ```
46
Word/Phrase that has the meaning; | Let me know that you have received and understood this message.
ACKNOWLEDGE
47
Word/Phrase that has the meaning; | Yes.
AFFIRM
48
What is the meaning of this Word/Phrase; | APPROVED
Permission for proposed action granted
49
What is the meaning of this Word/Phrase; | BREAK
I hereby indicate the separation between portions of the message (to be used where there is no clear distinction between the text and other portions of the message).
50
What is the meaning of this Word/Phrase; | BREAK BREAK
I hereby indicate seperation between messages transmitted to different aircraft in a very busy environment.
51
What is the meaning of this Word/Phrase; | CANCEL
Annul the previously transmitted clearance.
52
What is the meaning of this Word/Phrase; | CHECK
Examine a system or procedure (no answer is normally expected)
53
What is the meaning of this Word/Phrase; | CLEARED
Authorised to proceed under the conditions specified.
54
What is the meaning of this Word/Phrase; | CONFIRM
I request verification of: (clearance, instruction, action, information)
55
What is the meaning of this Word/Phrase; | CONTACT
Establish communication with...
56
What is the meaning of this Word/Phrase; | CORRECT
True or Accurate
57
What is the meaning of this Word/Phrase; | CORRECTION
An error has been made in this transmission (or message indicated) the correct version is..
58
What is the meaning of this Word/Phrase; | DISREGARD
Ignore
59
What is the meaning of this Word/Phrase; | HOW DO YOU READ
What is the readability of my transmission?
60
What is the readability scale?
1. Unreadable 2. Readable now and then 3. Readable but with difficulty 4. Readable 5. Perfectly readable
61
What is the meaning of this Word/Phrase; | I SAY AGAIN
I repeat for clarity or emphasis.
62
What is the meaning of this Word/Phrase; | MAYDAY
My aircraft and its occupants are threatened by grave and imminent danger and/or I require immediate assistance
63
What is the meaning of this Word/Phrase; | MAINTAIN
Continue in accordance with the condition(s) specified or in its literal sense, e.g. "Maintain VFR"
64
What is the meaning of this Word/Phrase; | MONITOR
Listen out on (frequency)
65
What is the meaning of this Word/Phrase; | NEGATIVE
No or permission is not granted or that is not correct or not capable
66
What is the meaning of this Word/Phrase; | OUT
This exchange of transmission is eneded and I expect no response for you
67
What is the meaning of this Word/Phrase; | OVER
My transmission is ended and I expect a response from you
68
What is the meaning of this Word/Phrase; | PAN PAN
I have an urgent message to transmit concerning the safety of my aircraft or other vehicle or of some person on board or within sight but I do not require immediate assistance
69
What is the meaning of this Word/Phrase; | READBACK
Repeat all, or the specified part, of this message back to me exactly as received.
70
What is the meaning of this Word/Phrase; | RECLEARED
A change has been made to your last clearance and this new clearance supersedes your previous clearance or part thereof
71
What is the meaning of this Word/Phrase; | REPORT
Pass me the following information
72
What is the meaning of this Word/Phrase; | REQUEST
I should like to know or I wish to obtain
73
What is the meaning of this Word/Phrase; | ROGER
I have received all of your last transmission (under NO circumstances to be used in reply to a question requiring READBACK or a direct answer in the affirmative or negative)
74
What is the meaning of this Word/Phrase; | SAY AGAIN
Repeat all or the following part of your last transmission
75
What is the meaning of this Word/Phrase; | SPEAK SLOWER
Reduce your rate of speech
76
What is the meaning of this Word/Phrase; | STANDBY
Wait and I will call you.
77
What is the meaning of this Word/Phrase; | UNABLE
I cannot comply with your request, instruction or clearance (normally followed by a reason)
78
What is the meaning of this Word/Phrase; | VERIFY
Check and confirm with originator
79
What is the meaning of this Word/Phrase; | WILCO
I understand your message and comply with it
80
What is the meaning of this Word/Phrase; | WORDS TWICE
a. as a request; Communication is difficult. Please send every word or group of words twice. b. as information: Since communication is difficult every word or group of words in this message will be transmitted twice.
81
What is the format of a distress message?
MAYDAY [MAYDAY MAYDAY] (station addressed), (Aircraft identification), (nature of distress condition e.g. FUEL or EMERGENCY DECENT), (intentions), (position, level and heading), (any other useful information).
82
How do we acknowledge a distress message?
ROGER MAYDAY
83
How do we acknowledge a distress message on frequency transfer?
MAYDAY [(type of emergency)] ACKNOWLEDGED
84
What phrase to we use to impose radio silence?
STOP TRANSMITTING. MAYDAY
85
What is the ATC broadcast for emergency decent traffic?
EMERGENCY DESCENT AT (significant point or location) ALL AIRCRAFT BELOW (level) WITHIN (distance) OF (significant point or navigation aid) [LEAVE IMMEDIATELY] [(specific instructions as to direction, heading or track, etc)]
86
How do we announce cancellation of distress condition?
CANCEL DISTRESS (information)
87
How do we announce termination of distress and radio silence?
DISTRESS TRAFFIC ENDED
88
What is the format of an urgency message?
PAN PAN [PAN PAN, PAN PAN] (station addressed), (Aircraft identification), (nature of urgency condition e.g. MEDICAL PRIORITY REQUIRED or WEATHER DEVIATION REQUIRED), (intentions), (position, level and heading), (any other useful information).
89
How do we acknowledge an urgency message?
ROGER PAN
90
How do we acknowledge an urgency message on frequency transfer?
PAN [(type of emergency)] ACKNOWLEDGED
91
What is the response to a pilot calling "(Aircraft indentification) TCAS RA"?
ROGER
92
What is the response to a pilot calling "(Aircraft indentification) CLEAR OF CONFLICT RETURNING TO (assigned level)"?
ROGER

ASA Ab Initio (9 decks)

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