Written Flashcards

1
Q
  1. As given in MATS 1, state the definition of the following, together with explanations: (7)

a) Transition Altitude
b) Transition Level

A

a) Transition altitude is the altitude at or below which the vertical position of an a/c is controlled by reference to altitude (or height when QFE is used). Wherever possible, there is a common transition altitude for aerodromes within a control zone. Unless otherwise notified, the transition altitude for civil aerodromes is 3000ft.

b) Transition level is the lowest flight level available for use above the transition altitude. It is determined from the table in appendix A as follows;
- Within controlled airspace, by the controlling authority and it will normally be based on the QNH of the major aerodrome
- Outside controlled airspace, by the aerodrome operator and based on the aerodrome QNH

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2
Q
  1. According to MATS 1, when: 16

a) May a pilot file a flight plan:
b) Must a pilot file a flight plan: (5)
c) Is a pilot advised to file a flight plan:

A

a) A pilot may file a flight plan for any flight

b) A pilot must file a flight plan’
- For all flights within controlled airspace conducted in accordance with IFR;
- For all flights within Class C and D airspace conducted in accordance with VFR;
- When he wishes to receive an ATAS (Class F airspace)
- For all flights which will cross a UK international FIR boundary;
- For any flight where the destination is more than 40km from the aerodrome of departure, and the aircraft’s maximum weight authorised exceeds 5700kg

c) A pilot is advised to file a flight plan;
- If the flight involves flying over the sea more than 10m from the UK coast, or over sparsely populated areas where SAR operations would be difficult; or
- If he intends to fly into an area where SAR operations are in progress. The flight plan should include expected times of entering and leaving the area, and the details must also be passed oto the parent ACC. The ACC is to notify the ARCC concerned.

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3
Q
  1. As listed in the AIP, state what the following SSR codes signify: 11
Code	Meaning
7500	
7600	
7700	
0000	
0002	
0020	
0021	 
0022	
0023	
0024	
0030	
0031	
0032	
0033	
0034	
0035	
0036	
0037	
0040	
1177	
2000	
3305-3307	
7010	
7000	
7001	
7002	
7003	
7004	
7005	 
7007
A

Code Meaning

0000 SSR Data unreliable
0002 Ground transponder testing
0020 air ambulance helicopter emergency medevac
0021 fixed wing a/c receiving service from a ship
0022 helicopter(s) receiving service from a ship
0023 a/c engaged in actual SAR operations
0024 Radar flight evaluation/calibration
0030 FIR lost
0031 not in use in the UK
0032 a/c engaged in police air support operations
0033 parachute dropping
0034 antenna trailing/target towing
0035 selected flights/helicopters
0036 helicopter pipeline/power line inspection flights
0037 royal flights/helicopters
0040 civil helicopters north sea
1177 LACC FIS
2000 proceeding from non SSR environment
3305-3307 a/c receiving a service from London D&D Cell
7010 Aerodrome traffic pattern
7000 conspicuity code
7001 military low level climb out
7002 danger areas general
7003 Red Arrows
7004 aerobatic manoeuvres
7005 high energy manoeuvres
7007 Open Skies observation flight
7500 Hi-jack or other act of violence
7600 Radio failure
7700 Aircraft emergency

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4
Q
  1. As stated in MATS 1, describe the different types of mode A codes that controllers are to assign to aircraft, as detailed in the Code Assignment Plan. Include in your answer the actions of controllers at SSR equipped units when allocating such a code. 9
A

Controllers are to assign Mode A codes to a/c according to the Code Assignment Plan, which comprises:

a) Discrete codes comprising;
a. Domestic codes, which are assigned to a/c flying within the area of responsibility of a unit;
b. ORCAM codes, which are assigned to international flights and will normally be retained beyond the area of responsibility of the assigning unit
b) Special purpose codes allocated internationally
c) Conspicuity codes, allocated nationally, to specific units/users

When providing a surveillance service to an a/c, controllers working at SSR equipped units should allocate that flight with a discrete code in accordance with the SSR assignment plan. Unless otherwise directed by an ATC unit, Mode C will be selected in conjunction with Mode A. Controllers must, therefore, verify the accuracy of the Mode C readout when assigning discrete codes to a/c.

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5
Q
  1. According to the AIP, detail the pilots responsibilities with regard to SSR operating procedures for codes other than special purpose codes 7000, 0033 and 7004. 8

ISASW

A

Pilots shall:

  • If proceeding from an area where a specific Mode A code has been assigned to the aircraft by an ATS unit, maintain that code setting unless otherwise instructed
  • Select or reselect Mode A codes, or switch off the equipment when airborne, only when instructed by an ATS unit
  • Acknowledge Mode A code setting instructions by reading back the code to be set
  • Select Mode C pressure-altitude reporting mode of the transponder simultaneously with mode A unless otherwise instructed by an ATS unit
  • When reporting levels under routing procedures or when requested by ATC, state the current altimeter reading to the nearest 100ft. This is to assist in the verification of Mode C pressure-altitude reporting data transmitted by the a/c
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6
Q
  1. According to MATS 1:
    a. What considerations must be taken into account in respect of the Mode A and Mode C of conspicuity codes?
    b. When are pilots required to, and advised to, squawk conspicuity code 7000? List the occasions when a suitably equipped aircraft would squawk a different code. 13

TTTO

A

a) The Mode A and associated Mode C data of conspicuity codes are to be considered unvalidated and unverified

b) Pilots are required to squawk conspicuity code 7000 when operating at and above FL100, and are advised to do so when below FL100 unless;
- They have been assigned a discrete code;
- They are transponding on one of the special purpose codes or on one of the other specific conspicuity codes assigned in accordance with the Code Assignment Plan
- They are flying below 3000ft in the aerodrome traffic pattern and have been instructed to select the aerodrome traffic pattern conspicuity code 7010
- On grounds of safety the a/c has been instructed to squawk standby. In view of the associated reduction in protection from ACAS, such circumstances are to be regarded as exceptional. ATSUs shall log the circumstances and duration of any such occurrences. Records are to be made available to the CAA on request.

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7
Q
  1. According to the AIP, what are the pilots responsibilities and actions when an aircraft transponder fails before intended departure and cannot be repaired? Include ATC considerations, but not the temporary failure of Mode C alone. 8

PII

A

If the transponder fails before intended departure and cannot be repaired, pilots shall:

a) Plan to proceed as directly as possible to the nearest suitable aerodrome where repair can be made;
b) Inform ATS as soon as possible, preferably before the submission of a flight plan. When granting clearance to such aircraft, ATC will take into account the existing and anticipated traffic situation and may have to modify the time of departure, flight level, or route of the intended flight.
c) Insert in item 10 of the ICAO flight plan under SSR the letter N for complete unserviceability of the transponder, or in the case of a partial failure, the letter corresponding to the remaining transponder capability, including unserviceability of any Mode S functionality, as specified in ICAO Doc 4444,appendix 2

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8
Q
  1. According to the AIP, what are the actions and responsibilities of ATS units when an aircraft transponder fails after departure? Include in your answer the pilots responsibilities where appropriate, but not the temporary failure of Mode C alone. 7
A

If the transponder fails after departure or en-route, ATS units will endeavour to provide for continuation of the flight in accordance with the original flight plan. In certain traffic situations this may not be possible, particularly when the failure is detected shortly after take off. The aircraft may then be required to return to the departure aerodrome, or to land at another aerodrome acceptable to the operator and to ATC. After landing, the pilots shall make every effort to have the transponder restored to normal operation

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9
Q
  1. As listed in MATS 1 Appendix E, list the 9 items of “operationally significant information” to which controllers must ensure they receive a readback, during telephone and intercom co-ordination messages: 9
A
Levels
Headings
Speed restrictions
Airways and route clearances
Runway in use
SSR codes
Pressures (including units when value
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10
Q
  1. According to MATS 1, what are the meanings of the following Standard Speech abbreviations: 8

Acknowledge

Freecall

Roger

Correction

Negative

Contact

A

Acknowledge
Let me know that you have received and understood this message
Freecall
Call (unit), your details have not been passed
Roger
I have received all of your last transmission. Note – under no circumstances to be used in reply to a question requiring a direct answer in the affirmative (affirm) or negative (negative)
Correction
There has been an error in this message (or message indicated) – the correct version is…
Negative
No, or not capable, or permission not granted, or that is not correct
Contact
Establish communications with (unit). Your details have been passed

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11
Q
  1. As detailed in MATS 2, what are the frequencies for the following Medway/Fisher sectors? 8
  • Fisher High –
  • Fisher Low –
  • Fisher Hayle –
  • Medway Upper –
  • Chiltern Sector –
  • Medway TC –
  • Fens Sector –
  • Peaks Sector –
  • Wight Upper –
  • Wight Lower –
A
  • Fisher High – 132.050
  • Fisher Low – 136.650
  • Fisher Hayle – 129.425
  • Medway Upper – 130.875
  • Chiltern Sector – 132.6
  • Medway TC – 123.9
  • Fens Sector – 128.050
  • Peaks Sector –131.2
  • Wight Upper – 134.450
  • Wight Lower –128.275
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12
Q
  1. As detailed in MATS 2, name all the airfields (including the 4 letter designator) contained within or on the boundary of the Tyne sector. 6
A
EGGL – Lisset
EGXL – Longtown
EGMP – Polebrook
EGMB – Blyton
EGVM – Metfield
EGGS - Seaton
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13
Q
  1. As detailed in MATS 2, list all the reporting points in the correct order that an aircraft would fly over on the following routes. Include the reporting point immediately preceding the Tyne sector, and the first reporting point after the aircraft has left the Tyne sector. 6
L17		
L17/T45	
T45		
L173		
L17/L173	
T45/L173	
T45/L17	
UY96
A

L17 – SEV – DART – TYNE – OLIVE - GROVE

L17/T45 – SEV – DART – TYNE – SWALO - RYE - RAVEN

T45 – RAVEN – RYE- SWALO – TYNE – PEWSI – SHARK – CHE

L173 – ALLEY – HAYLE – STONE – PEWIS – CHARD- TAV - TEMMS

L17/L173 – SEV – TYNE – STONE – HAYLE - ALLEY

T45/L173 – ETC ETC

T45/L17

UY96

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14
Q
  1. According to MATS 2 and the lesson handout, what classes of airspace exist in the Tyne sector? Include where these different classes of airspace exist. 4

Class A –
Class C –
Class D –
Class G –

A

Class A – CAS below FL195, Seaton CTA within T45/L173 FL85 and below

Class C – all a/s above FL195

Class D – Seaton CTR and CTA except that which is Class A as above

Class G – Rest of the FIR

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15
Q
  1. According to MATS2, state the vertical sectorisation (upper and lower limits) of the following sectors: 7
Fisher high		
Fisher Low		
Wight Upper		
Wight Low		
Medway TC		
Chiltern		
Medway Upper
A
Fisher high	        305 - 660	
Fisher Low		DB - 305
Wight Upper		255-660
Wight Low		DB-255
Medway TC		DB-175
Chiltern		        175-255
Medway Upper	255-660
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16
Q
  1. According to MATS 1, between which flights shall standard separation (vertical or horizontal) be provided? Do not/do include arrangements for aircraft in classes F & G airspace. 5
A

Standard vertical or horizontal separation shall be provided, unless otherwise specified, between:

  • All flights in Class A airspace
  • IFR flights in Class C, D and E airspace
  • IFR and VFR flights in Class C airspace
  • IFR flights and special VFR flights
  • Special VFR flights (except where a reduction is authorised by the CAA)

Standard separation shall be provided, in so far as possible, between a/c that have flight planned to operate IFR on Class F ADR.
In Class G airspace, separation between a/c is ultimately the responsibility of the pilot; however, in providing a Deconfliction service or a Procedural service, controllers will provide information and advice aimed at achieving a define deconfliction minima

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17
Q
  1. According to MATS 1, how is lateral separation applied and how is it achieved? 5
A

Lateral separation shall be applied so that the distance between a/c is never less than a specified amount.
It is achieved by requiring a/c to fly on different tracks or in different geographical locations, as determined by visual observation or the use of navigational aids.

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18
Q
  1. According to MATS 1, how is longitudinal separation applied & how is it achieved? 6
A

Longitudinal separation based on time or distance shall be applied such that the distance between the estimated positions of the a/c being separated is never less than a prescribed minima.
It is achieved by requiring a/c to;
- depart as a specified time;
- lose or gain time to arrive at a geographical location at a specified time; or
- hold over a geographical location until a specified time

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19
Q
  1. As stated in MATS 1, describe the procedure and methods for the validation of Mode A codes. Include in your answer the procedure to be carried out when validation is not possible. 12
A

A controller assigning any Mode A code must validate the code by checking as soon as possible, either by direct reference to his display or with the assistance of another controlling agency, that the data displayed corresponds with the code which has been assigned, At units where code callsign conversion equipment is in use, procedures to ensure the correct correlation of the callsign with the assigned code are to be applied.

The code must be checked by one of the following methods;

  • instructing the a/c to squawk the assigned code and observing that the correct numbers appear on the situation display;
  • instructing the a/c to ‘squawk ident’ and simultaneously checking the code numbers associated with the SSR response;
  • matching an already identified position indication with the assigned code for the flight

If the code readout does not correspond to that assigned, the pilot is to be instructed to reset the assigned code. Where this fails to achieve display of the assigned code then the pilot is to be instructed to squawk 0000. If a corrupt code still exists, the pilot should normally be instructed to switch off the transponder. However, the corrupt code may be retained to assist identification and tracking, provided the Mode C has been verified. Associated ATC units are to be informed of the retention of corrupt data.

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20
Q
  1. As stated in MATS 1: 9
    a. Describe when, and how, controllers are to verify the accuracy of Mode C data
    b. Detail when a Mode C readout can be assumed to have been verified
    c. What action must a controller take if he observes a discrepancy involving a Mode C readout?
A

a. Controllers are to verify the accuracy of Mode C data, once the a/c has been identified and Mode A validated, by checking that the readout indicates 200ft or less from the level reported by the pilot. If the a/c is climbing or descending, the pilot is to be instructed to give a precise report as the a/c passes through a level.
Verification may be achieved with the assistance of an ATSU with which the a/c is on contact

b. A Mode C readout can be assumed to have been verified if it is associated with a deemed validated Mode A code.
c. There is no requirement to monitor level readouts when Mode C information is not being used to provide vertical separation. However, if a controller observes a discrepancy, the pilot is to be asked to confirm altimeter setting and level. If the discrepancy remains, the pilot is to be instructed to switch off Mode C. If independent switching of Mode C is not possible, the pilot is to be instructed to select A0000.

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21
Q
  1. According to MATS 1, under what circumstances may a controller consider a Mode A code to be deemed validated? 4
A

Controllers may deem a Mode A code to be validated when it can be ascertained from the Code Assignment Plan that an observed code has been assigned by a unit capable of validating that code, unless;

  • the code is promulgated as being unvalidated; or
  • the controller has been notified that the code is corrupt.
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22
Q
  1. According to MATS 1, how are Mode C responses used to apply vertical separation? Include in your answer when Mode C cannot be used to apply vertical separation, but do NOT include the occasions when the intentions of Mode C transponding aircraft are not known. 8
A

When SSR is used to assess vertical separation, the Mode C responses are to be continually monitored to ensure that the vertical distance is never less than the prescribed minimum.

Vertical separation using Mode C is not applied against a/c transponding A0000

Minimum vertical separation may be applied between verified Mode C transponding a/c, provided the intentions of both a/c are known to the controller because either;

  • They are under his control;
  • They have been coordinated; or
  • They are operating in accordance with established agreements
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23
Q
  1. According to MATS 1, how is level occupancy assessed using Mode C? Include in your answer when an aircraft has reached, left, passed and is maintaining a level, and how this information may be displayed. 14
A

The following criteria apply when assessing the vertical position of a Mode C transponding a/c;
- An a/c may be considered to be at an assigned level provided that the Mode C readout indicates 200ft or less from that level;
- An a/c which is known to have been instructed to climb or descend may be considerd to have left a level when the Mode C readout indicates a change of 400ft or more from that level and is continuing in the anticipated direction;
- An a/c climbing or descending may be considered to have passed through a level when the Mode C readout indicates that the level has been passed by 400ft or more and is continuing in the required direction;
- An a/c may be considered to have reached an assigned level when 3 successive Mode C readouts indicate 200ft or less from that level.
Mode C informiton is usually displayed as a FL but on some ground equipment the vertical position of an a/c flying below a pre-deteremind datum is displayed as an altitude.

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24
Q
  1. According to MATS 1: 14
    a. How are Mode C responses used to assess vertical separation?
    b. When can Mode C not be used to apply vertical separation?
    c. What conditions apply to the use of Mode C for minimum vertical separation?
    d. For both aircraft under a Radar Control service and aircraft under a Deconfliction service, what are the vertical separation conditions if aircraft intentions are not known and/or if mode C is unverified?
A

a. When SSR is used to assess vertical separation, the Mode C responses are to be continually monitored to ensure that the vertical distance is never less than the prescribed minimum.
b. Vertical separation using Mode C is not applied against a/c transponding A0000

c. Minimum vertical separation may be applied between verified Mode C transponding a/c, provided the intentions of both a/c are known to a controller because;
- They are under his control;
- They have been coordinated; or
- They are operating in accordance with established agreements

d. Aircraft under radar control service – if the intentions of Mode C transponding a/c are not known, the minimum vertical separation must be increased to 5000ft.
Unverified Mode C data may be used for separation purposes, provided a minimum vertical separation of 5000ft is maintained, and radar returns, however presented, are not allowed to merge.

A/c under deconfliction service – if the intentions of Mode C transponding a/c are not known, vertical deconfliction minima must be increased to 3000ft, and unless the SSR Mode 3A indicates that the Mode C data has been verified, the surveillance returns, however presented, should not merge.

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25
Q
  1. As stated in MATS 1 Appendix E, what items contained in RTF messages, from an AREA CONTROL perspective, are required to be read back in full? 9
A
Level instructions
Heading instructions
Speed instructions
Aiways and route clearances
Runways in use
SSR operating instructinos
Pressure settings inc units when value is below 1000HPa
Frequency changes
Types of ATS
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26
Q
  1. According to MATS 1, when: 6
    a. Shall standard separation be increased?
    b. May standard separation be reduced (ignore in the vicinity of aerodromes)
A

a. Separation standards are minima and shall be increased when;
- Requested by the pilot;
- A controller considers it necessary;
- Directed by the CAA

b. In addition to the following, standard separation may be reduced when authorised by the CAA and published in MATS Part 2
Standard separation may be reduced when a SAR a/c is escorting an aircraft in an emergency. A minimum is not laid down in UK FIRs and separation may be reduced to that which can be maintained visually or with airborne radar
Reduced vertical separation may be applied during surveillance system failure as detailed in MATS Part 1

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27
Q
  1. As stated in MATS 1, what is a loss of separation, and what are a controllers actions when faced with this situation? 6
A

If, for any reason, a controller is faced with a situation in which two or more a/c are separated by less than the prescribed minima, e.g. ATC errors or differences in a pilot’s estimated and actual times over reporting points, he is to;

  • Use every means at his disposal to obtain the required minimum with the least possible delay; and
  • When considered practicable, pass traffic information if an ATS surveillance service is being provided, otherwise, pass essential traffic information
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28
Q
  1. As specified in MATS 1, under what conditions may an aircraft be instructed to climb or descend to a level previously occupied by another aircraft? Include any precautions. 12
A

An a/c may be instructed to climb or descend to a level previously occupied by another aircraft provided that;
- Vertical separation already exists;
- The vacating a/c is proceeding a level that will maintain vertical separation; and
- Either;
o The controller observes that the vacating a/c has left the level; or
o The pilot has reported leaving the level

If severe turbulence is known to exist, instructions shall be delayed until the vacating a/c is known to be at, or through, another level separated by the required minimum.
Controllers shall exercise caution when instructing an a/c to climb or descent to a level previsouly occupied by another a/c. Consideration shall be given to the fact that a/c may climb or descend at markedly different rates, and additional measures such as specifying a maximum or minimum rate of climb or descent shall be applied to ensure that the required separation is maintained. This is particularly relevant when the a/c concerned are established in the same holding pattern.

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29
Q
  1. According to MATS 1: 8

a. Define Essential Traffic Information:
b. When passed to an aircraft, what shall it include?

DTCA

A

a. Essential traffic is traffic which is separated for any period by less than the specified standard separation.It Is normally passed in situations where ATS surveillance systems are not available.

b. When passed to an a/c, it shall include;
- Direction of flight of conflicting a/c;
- Type of conflicting a/c;
- Cruising level of conflicting a/c and ETA for the reporting point, or for a/c passing through the level of another, the ETA for the reporting point closest to where the a/c will cross levels;
- Any alternative clearance

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30
Q
  1. As detailed in MATS 1, describe the Turn Method of establishing identification. Include any conditions and precautions to be taken. 19
A

An a/c may be identified by ascertaining its heading, and following a period of track observation, correlating the observed moment of a particular position indication with:

  • The acknowledged execution of an instruction to alter heading by at least 30°;
  • One or more changes of heading of at least 30°, as instructed by another controller;
  • One or more changes of heading of at least 30° reported by the pilot

A turn for identification does not constitute the provision of a surveillance service. However, controllers should take into consideration terrain, other surveillance returns, PSR coverage and the RoA before instructing an a/c to alter heading.

In using the turn method the controller shall:

  • Verify that the movements of not more than one position indication correspond with thos of the a/c
  • Exercise caution particularly when employing this method in areas where changes of a/c heading are commonly made as a navigational routine
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31
Q
  1. According to MATS 1, what may surveillance systems be used to provide, whether or not the aircraft has been identified? 4

IAIA

A

Surveillance systems may be used to provide the following, whether or not the a/c has been identified;

  • Information on the position of a/c likely to constitute a hazard;
  • Avoiding action
  • Assistance to a/c in emergency
  • Information about observed weather for pilots and other controllers
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32
Q
  1. As stated in MATS 1: 8

a. What do surveillance services comprise of?
SVPMA

b. What shall a controller do before providing any of the above services, and what does this action not imply?

A

Surveillance services comprise;

  • Separation of arriving, departing, and en-route traffic;
  • Vectoring;
  • Position information to assist in the navigation of a/c;
  • Monitoring traffic to provide information to the procedural controller;
  • Assistance to a/c crossing controlled airspace

b. Before a controller provides any of the above services, he shall either;
- Identify the a/c using a method appropriate to the surveillance system in use; or
- Have had the identity of the a/c transferred from another controller.
The act of identifying an a/c does not imply that a service is being given.

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33
Q
  1. As detailed in MATS 1: 11
    a. Define the term Clearance Limit, and how it can be specified
    b. When shall an aircraft be cleared for its entire route to the aerodrome of first intended landing, and what is the clearance limit when this is not possible?
A

a. A clearance limit is the point to which an a/c is granted an ATC clearance, and shall be specified by naming;
- An aerodrome;
- A reporting point; or
- A controlled or advisory airspace boundary

b. An a/c shall be cleared for its entire route to the aerodrome of first intended landing when:
- It has planned to remain within controlled or advisory airspace throughout the flight; and
- There is reasonable assurance that prior coordination will be effected ahead of the passage of the a/c
The clearance limit for all other flights shall be the boundary of controlled or advisory airspace

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34
Q
  1. According to MATS 1, what are the instructions and considerations relating to the amendments to clearances? Do not include references to SID profiles/routes. 5
A

When an amendment is made to a clearance, the new clearance shall be read in full to the pilot and shall automatically cancel any previous clearance.
Controllers must be aware, therefore, that if the original clearance included a restriction (e.g. cross ABC FL150 or below), then the issue of a revised clearance automatically cancels the earlier restriction, unless it is re-iterated with the revised clearance.

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35
Q
  1. As detailed in MATS 1: 12
    a. What is the purpose of an ATC clearance, how are such clearances based and when are they required. Do not go into detail with regards to the “manoeuvring area and vehicular traffic”
    b. What items shall be included in an ATC clearance, and what items are to be added as necessary?

CARL
ATCA

A

a. An ATC clearance authorises an a/c to proceed under conditions specified by an ATC unit. Clearance are based solely on known traffic conditions, and are required for any flight, or portion of a flight, which is provided with an ATC or advisory service.

b. An ATC clearance shall contain the following items;
- a/c identification;
- route;
- clearance limit;
- levels of flight and changes of level
The following items are to be added to a clearance as necessary;
- ATFM slot;
- Time restrictions
- Communications instructions
- Any special instructions e.g. approach/departure manoeuvres

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36
Q
  1. According to MATS 1: 7
    a. How are cruising levels normally allocated to aircraft with reference to flight planned levels & priorities? Do not go into detail with actual levels, semi-circular/quadrantal rules and airway/upper ATS routes specifics
    b. What level must not be allocated?
A

a. How are cruising levels normally allocated to aircraft with reference to flight planned levels & priorities? Do not go into detail with actual levels, semi-circular/quadrantal rules and airway/upper ATS routes specifics

Normally, the cruising level requested in the flight plan is to be allocated. If the flight planned level is not available, the nearest appropriate vacant level is to be allocated.
When two or more a/c are at the same cruising level, the preceding a/c shall normally have priority
An a/c at a cruising level shall normally have priority over other a/c requesting that level
b. What level must not be allocated?

FL195 must not be allocated as a cruising level

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37
Q
  1. Listed below are various Types of Flight as stated in MATS 1. List the Flight Priority for each (note some may be duplicated) 11

Category Type of flight
A Aircraft in emergency (e.g. engine fault, fuel shortage, seriously ill passenger)

Aircraft which have declared a ‘Police Emergency’

Ambulance/Medical aircraft when the safety of life is involved
B Flights operating for search and rescue or other humanitarian reasons

Post-accident flight checks

Other flights, including Open Skies Flights, authorised by the CAA

Police flights under normal operational priority.
C Royal Flights
Flights carrying visiting Heads of State
which have been notified by NOTAM/temporary supplement
D Flights notified by the CAA carrying Heads of Government or very senior government ministers
E Flight check aircraft engaged on, or in transit to, time or weather critical calibration flights

Other flights authorised by the CAA
Normal Flights Flights which have filed a flight plan in the normal way and conforming with
normal routing procedures.

Initial instrument flight tests conducted by the CAA Flight Examining Unit.
(RTF callsign “EXAM”)
Z Training, non-standard and other flights

A

Category Type of flight
A Aircraft in emergency (e.g. engine fault, fuel shortage, seriously ill passenger)

Aircraft which have declared a ‘Police Emergency’

Ambulance/Medical aircraft when the safety of life is involved
B Flights operating for search and rescue or other humanitarian reasons

Post-accident flight checks

Other flights, including Open Skies Flights, authorised by the CAA

Police flights under normal operational priority.
C Royal Flights
Flights carrying visiting Heads of State
which have been notified by NOTAM/temporary supplement
D Flights notified by the CAA carrying Heads of Government or very senior government ministers
E Flight check aircraft engaged on, or in transit to, time or weather critical calibration flights

Other flights authorised by the CAA
Normal Flights Flights which have filed a flight plan in the normal way and conforming with
normal routing procedures.

Initial instrument flight tests conducted by the CAA Flight Examining Unit.
(RTF callsign “EXAM”)
Z Training, non-standard and other flights

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38
Q
  1. What are the vertical separation minima as described in MATS 1? 9
A
The vertical separation minima are;
-	Between a/c flying subsonic;
o	Up to FL290 apply 1000ft
o	Above FL290 apply 2000ft
	Except that, between FL290 and FL410 inclusive, 1000ft may be applied between RVSM approved a/c operating in airspace designated as being notified for the pplication of this separation standard
-	Between a/c flying supersonic, and a/c flying subsonic and a/c flying supersonic;
o	Up to FL450, apply 2000ft
o	Above FL450, apply 4000ft
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39
Q
  1. Duplicate
A
  1. Duplicate
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40
Q
  1. Define the term ‘exact reporting point’ according to MATS 1. 8

OOAA

A

An exact reporting point is a position established by a navigational facility which is;

  • Overhead a VOR; or
  • Overhead an NDB; or
  • A position notified as a reporting point which is established by the intersection of VOR radials, or of a VOR radial and a bearing from an NDB; or
  • a position established by a VOR radial combined with a range from a collocated or associated DME
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41
Q
  1. As detailed in MATS 1, describe the Departing Aircraft Method of identification. Include in your answer where particular care should be taken. 9
A

By observing and correlating the position indication of a departing aircraft with a known airborne time. Identification is to be achieved within 1 mile of the end of the runway, unless otherwise authorised by the CAA.

Particular care should be taken to avoid confusion with aircraft overflying the a/d, making a missed approach, departing from an adjacent runway, or holding overhead the a/d.

42
Q
  1. As defined in MATS 1, describe the Position Report method of establishing identification, including precautions to be taken. 17

OAO

A

By correlating a particular position indication with a report from the pilot that the a/c is;
- Over an exact reporting point which is displayed in the situation display; or
- At particular distance not exceeding 30miles on a particular radial from a collocated VOR/DME or TACAN(DME). The source facility must be displayed on the situation display; or
- Over a notified visual reference point or prominent geographical feature, in either case approved for the purpose and displayed on the situation display, provided that the flight is operating with visual reference to the surface and at a height of 3000ft or less above the surface
The identification must be reinforced by an alternative method if there is any doubt about the identification because of:
- The close proximity of other returns; or
- Innacurate reporting from a/c at high levels or some distance from navigational facilities

The identification must follow a period of track observation, sufficient to enable to controller to compare the movement of the position indication with the pilot’s reported route. The reported position and level of the a/c must indicate that it it within known PSR cover.

43
Q
  1. As stated in MATS 1, describe the circumstances when pilots should, and may, be informed of their position. 6

FWWWW

A

Pilots should be informed of their position;

  • Following identification of the a/c using the turn method;
  • When the pilot requests the information;
  • When an a/c is flying off the correct track;
  • When an a/c estimate differs significantly from the controller’s estimate based on ATS surveillance system observation
  • When a pilot is instructed to resume his own navigation following vectoring, if the controller considers it necessary

Pilots may be informed of their position whenever a controller considers it necessary.

44
Q
  1. As stated in MATS 1, fully describe the methods of identification using SSR and when such methods are to be used. Include any precautions to be taken. 9

(ORO)

A

When using Mode A to identify a/c, one of the following methods is to be employed;

  • Observing the pilot’s compliance with the instruction to select a discrete four digit code;
  • Recognising a validated four digit code previously assigned to an a/c callsign. When code/callsign conversion procedures are in use and the code/callsign pairing can be confirmed, the callsign displayed in the data block may be used to establish an maintain identity;
  • Observing an ident feature when it has been requested. Caution must be exercised when employing this method because simultaneous requests for SPI transmissinos within the same area may result in misidentification. A/c displaying the conspicuity code 7000 are not to be identified using this method.
45
Q
  1. As described in MATS 1, when is it NOT necessary to inform the pilot of an aircraft that the identification of his aircraft is lost? 6
A

When using SSR, controllers may be temporarily unable to read the data blocks assicoated with a/c due to overlapping or garbling, e.g. in holding areas. Although this constitiutes a loss of identification, pilot’s need not be informed that identification has been lost if the controller anticipates that identification will be re-established immediately the overlapping or garbling ceases.

46
Q
  1. As stated in MATS 1, describe the methods a controller may use to transfer the identity of an aircraft to another controller when only PSR is available. 18
A

If only PSR is available, a controller may transfer the identity of an a/c to another controller by any of the following methods;
- Direct designation (pointing) of the position indication where two situation displays are adjacent or a conference type display is used. If the information on two situation displays is derived from separate PSR heads (or beams, if using a stack beam system), the transferring controller must ensure that the blips on both displays correlate before using this method. If parallax is likely to cause an error, an alternative method is to be used
- Designation of the position indication in terms of a direction and distance from a common reference point (geographical position or navigational facility), accurately indicated on both displays.
The position indication, as seen by the accepting controller, must be within 3 miles of the position stated. The distance between the a/c and the reference point must not exceed;
o 30 miles, if the a/c is flying along a published ATS route, or the direction is given as a bearing in degrees
o 15 miles in other circumstances
- Designation of the position indication by positioning an electronic marker or symbol so that only one position indication is thereby indicated and there is no possible doubt of correct identification

47
Q
  1. As described in MATS 1, detail how position information shall be passed to aircraft. 10

ABMLD

A

Position information shall be passed in one of the following forms;

  • A well known geographical position
  • Bearing (using points of the compass) and distance from a known position
  • Magnetic track and distance to a location displayed on the situation display that is a reporting point, an en-route navigational aid, or an approach aid
  • Latitude and longitude (at specific units only when authorised in Mats Pt 2)
  • Distance from touchdown if the a/c is on final approach
48
Q
  1. As stated in MATS 1, what are the minimum terrain clearance requirements when assigning levels to IFR flights in receipt of a Radar Control Service? Exclude the phases of flight for within the defined final approach area and within the Surveillance Minimum Altitude Area 11

Within 30 miles of the radar antenna associated with the unit providing the service
Outside the phases above

A

Phase:
Within 30 miles of the radar antenna associated with the unit providing the service

Minimum Terrain Clearance:
1000ft above any fixed obstacle within;
- 5 miles of the aircraft; and
- 15 miles ahead and 20° either side of the a/c’s track

When the a/c is within 15 miles of the antenna, and provided an SMAC or approved procedure has been notified, the 5 miles and 15 miles above may be reduced to 3 and 10miles respectively

Phase:
Outside the phases above

Minimum Terrain Clearance:
1000ft above any fixed obstacle;
- Which lies within 15 miles of the centreline of any airway or advisory route (for flights on airways and advisory routes) ; or
- Within 30 miles of the aircraft (for all other flights)

In sections of airways where the base is defined as a flight level, the lowest useable level normally provides not less than 1500ft terrain clearance

49
Q
  1. According to MATS 1, detail the types of Air Traffic Services which can be provided, according to the class of airspace within which the aircraft is flying. Include the remarks relevant to aircraft compliance with ATC instructions 14

Airspace Services provided Remarks

A
Airspace; 
Class A-E (controlled airspace)
Services provided;
ATC service with or without surveillance; 
Alerting Service
Remarks;
A/c are required to comply with ATC instructions
Airspace;
Class F (advisory routes)
Services provided;
Participating a/c – 
PS or DS;
AS
Non-participating a/c – 
PS; or DS; or BS; or TS.
AS
Remarks;
Instructions issued by controllers to pilots outside controlled airspace are not mandatory; however the services rely upon pilot compliance with the specified terms and conditions so as to promote a safer operating environment for all airspace users
Airspace;
Class G
Services provided;
BS; or TS; or DS; or PS.
 AS
Remarks;
((((As with Class F))))
50
Q
  1. As a radar controller, what would be your actions in the events of a surveillance system failure, according to MATS 1? Do not detail the return to service of a previously failed system. 5
A

In the event of surveillance system failure, the controller shall inform the a/c under control of the failure and apply local contingency procedures, which shall be detailed in Mats Part 2.
Reduced vertical separation of half the applicable vertical separation (e.g. 500ft where a controller would normally apply 1000ft) may be employed temporarily if standard separation cannot be provided immediately.
When reduced vertical separation is employed, pilots shall be informed and essential traffic information passed as necessary

51
Q
  1. State the minimum time separations (as specified in MATS 1) that may be used between aircraft at the same cruising level and on the same track, and detail any associated provisions. 14
A

2 mins * - provided the 2mins departure separation has been applied

3 mins * - when specifically authorised by the CAA, provided both a/c are:
 Equipped with functioning transponders; and
 continually monitored by radar and the actual distance between them is never less than 20 miles

5 mins * - when specifically authorised by the CAA, provided both a/c are:
 equipped with functioning transponders; and
 continuously monitored by radar, and the actual distance between them is never less than 30 miles

5 mins * - provided the preceding a/c has filed an airspace 20kts or more faster than the following a/c

10 mins

*this separation should be based on actual position reports ; forward estimates are not sufficiently reliable for this purpose

52
Q
  1. In the context of applying longitudinal separation, define the following terms as per MATS 1 3
    a) Same track
    b) Reciprocal track
    c) Crossing track
A

a) Same track
When the track of one a/c is separated from the track of the other by less than 45°
b) Reciprocal track
When the track of one a/c is separated from the reciprocal of the other by less than 45°
c) Crossing track
Intersecting tracks which are not class as same or reciprocal

53
Q
  1. According to MATS 1: 12
    a. When may a controller use SSR alone to provide horizontal separation?

ITI

b. When shall a controller NOT use SSR alone to provide horizontal separation?

A

a. Provided the pilots are made aware of the limitations of the service, SSR may be used to provide horizontal separation in the following circumstances;
- In accordance with MATS Part 2;
- To overcome temporary deficiencies within PSR cover, such as fading or clutter, the SSR return only of one a/c may be used to provide separation from the PSR or SSR return of another a/c, provided the PSR and SSR displays are correctly aligned. In this context “unavailable for use due to maintenance” does not constitute a “temporary deficiency”;
- Immediately after PSR failure for the minimum time necessary to establish procedural separation. Once established, services normally provided using radar may be resumed when the PSR is serviceable

b. SSR shall not be used to provide horizontal separation if a controller has any doubts about the accuracy of the position symbol due to equipment malfunction, reflections, or any other reason.

54
Q
  1. According to MATS 1, what is the standard phraseology for traffic information on known traffic? 4
A

Traffic, (number) o clock, (distance) miles, opposite direction/crossing right to left/left to right, (number) thousand feet above/below

55
Q
  1. According to MATS 1: 8
    a. When are pilots to make position reports, and what additional information may these reports contain?
    b. When are controllers to instruct pilots to make position reports?
A

a. In order to reduce RFT comms, pilots will make position reports only;
- on first transfer of comms from another ACC or sector. This report will contain a/c ident and flight level only. Subsequent reports will contain a/c ident, position and time.
- on reaching the limit of the ATC clearance
- when instructed to by ATC

b. Controllers are to instruct pilots to make position reports;
- when the a/c is outside ATS surveillance system cover;
- before identification has been achieved, and
- as detailed in MATS Part 2

56
Q
  1. According to MATS 1: 16
    a. Give full details of the methods that may be used to achieve co-ordination
    b. When is co-ordination deemed to have been achieved?
A

a. Coordination may be achieved by one of the following methods;
- Tactical coordination. The coordination of individual a/c to which the coordinating controllers are providing, or are about to provide, an ATS. It is achieved either verbally (face to face or over a landline) or silently using an electronic data communications system. Silent coordination procedures are to be detailed in MATS Part 2 and Unit Military Procedures.
- Standing coordination. Coordination which is implemented automatically, on a permanent basis, without communication between the controllers involved. It is effected in accordance with a written agreement between the units or sectors involved, and is only valid for the a/c and circumstances specified in the MATS Part 2

b. When approved by the CAA, coordination is deemed to have been achieved if an estimate message has been passed and the accepting ATC unit has raised no objection.

57
Q
  1. According to MATS 1: 8
    a. As described in MATS 1, what fundamental co-ordination requirement between ACCs or sectors is laid down for aircraft receiving an ATC or Advisory service? Include details of responsibility for initiation of co-ordination
    b. As stated in MATS 1, which information must be re-co-ordinated if changes occur any by when?
A

a. An a/c receiving a service from one ACC or sector must not be permitted to penetrate the airspace of another ACC or sector unless prior coordination has taken place. The responsibility for initiating coordination rests with the controller of the unit or sector transferring control, who shall comply with any conditions specified by the accepting controller
b. Subsequent changes in flight level, routing, or revisions of 3 minutes or more are to be re coordinated by the transferring controller and agreement reached before transfer of communication takes place

58
Q
  1. According to MATS 1: 13
    a. What is co-ordination and when is it affected? Give any provisos for responsibility
    b. What conditions and/or precautions need to be taken into account when agreeing co-ordination between controllers or on behalf of another controller?
A

a. Coordination is the act of negotiation between two or more parties, each vested with the authority to make executive decisions appropriate to the task being discharged. Coordination is effected when the parties concerned, on the basis of known intelligence, agree a course of action. Responsibility for obtaining the agreement and for ensuring implementation of the agreed course of action may be vested in one of the controllers involved.
b. A controller may carry out coordination on behalf of another controller, provided that the traffic situation and time available are such that the controller being represented can put into effect any agreed actions

59
Q
  1. DUPLICATE
A

DUPLICATE

60
Q
  1. State the flights and classes of airspace laid down in MATS 1 for which standard vertical or horizontal separation shall be provided. Include arrangements for aircraft in Classes F and G airspace. 9
A

Standard vertical or horizontal separation shall be provided, unless otherwise specified, between;

  • All flights in Class A airspace
  • IFR flights in Class C, D and E airspace
  • IFR flights and VFR flights in Class C airspace
  • IFR flights and Special VFR flights
  • Special VFR flights

Standard separation shall be provided, in so far as possible, between aircraft that have flight planned to operate IFR on Class F ADR.

In Class G airspace, separation between a/c is ultimately the responsibility of the pilot; however, in providing a Deconfliction or Procedural service, controllers will provide information and advice aimed at achieving a defined deconfliction minima.

61
Q
  1. According to MATS 1, what are the circumstances when separation may be deemed to exist between aircraft under Radar Control and unidentified known traffic? 6
A

Separation may be deemed to exist between aircraft under Radar Control, and unidentified known traffic, in the following circumstances;

  • When authorised procedures are in operation whereby the known traffic is under the control of another controller, who is utilizing an ATS surveillance system, and separation can be maintained by direct coordination; or
  • When authrorised procedures are in operation whereby track or vertical separation is deemed to exist.
62
Q
  1. As listed in MATS 1, state the data on IFR flights that Approach Control units are required to keep Area Control advised of, and any conditions. 9
A

Approach control units are required to keep Area Control units promptly advised of the following data on IFR flights;

  • Lowest level available for use at the holding point by Area control
  • Average time interval between successive approaches
  • Revisions to expected approach times when calculations show a variation of 5 minutes or more
  • Arrival times over the holding point if these vary from the estimate by 3 mins or more
  • Missed approaches when re-routing is entailed, so that subsequent action is coordinated
  • Departure times of a/c
  • All information on overdue a/c

The passing of any of this information may be delegated from Approach to Aerodrome control. Any of these items can be deleted from routine practice by agreement with Area control.

63
Q
  1. According to MATS 1: 10
    a. As described in MATS 1, what fundamental co-ordination requirement between ACCs or sectors is laid down for aircraft receiving an ATC or Advisory service? Include details of responsibility for initiation of co-ordination
    b. State when this process must be complete and when can it be said to have been achieved
A

a. An a/c receiving an ATC or advisory service from one ACC or sector must not be permitted to penetrate the airspace of another ACC or sector unless prior coordination has taken place. The responsibility for initiating coordination rests with the controller of the unit or sector transferring control, who shall comply with any conditions specified by the accepting controller.

b.
The complete process of coordination, which must precede transfer of control, has been achieved when:
1) Notification, negotiation, and agreement has taken place progressively, i.e. step by step;
2) It has been agreed that aircraft can proceed under specified conditions without the need for individual coordination. The principles of such agreements and controllers’ positions to which they apply shall be detailed in MATS part 2;
3) An estimate message has been passed and no objection raised by the accepting ATC unit. This procedure must be approved by the CAA.

64
Q
  1. According to MATS 1, what are the principles upon which the method of operation will be based at an ACC? 10
A

An ACC is divided into sectors, which work in close liaison. The method of operation differs at each centre, but will always be based on the following principles;

a) Each controller shall be responsible for the efficient performance of those tasks that are specifically allocated in the task description. Tasks are detailed in MATS Pt 2;
b) Controllers are to monitor the actions of other members of the sector team to the extent that prime duties permit;
c) Sectors must have a defined prime flight data display for the purpose of conflict detection, which should at all times reflect all clearance instructions issued, and communications received;
d) Inter sector coordination purposes require laid-down criteria which enable the coordinator, when authorized by the CAA, to use surveillance derived information for the transfer of traffic between sectors without reference to the controller.

65
Q
  1. State the conditions for transfer of control by silent handover and detail the receiving controller’s responsibilities as specified in MATS 2. 6
A

Transfer of control without radar handover (silent handover) may be effected provided that:

  • The a/c must be displaying a discrete SSR identity;
  • The a/c must be within the anticipated displayed radar cover of the receiving sector;
  • Before giving an executive instruction to an a/c which has been transferred by silent handover, the receiving controller is to identify it. If the cleared flight level is omitted from the pilot’s initial call, it shall be confirmed in the ATC reply and acknowledgement received.
66
Q
  1. according to MATS 1: 11
    i) what are the conditions in order for a radar handover to be effected?
    ii) State the standard phraseology, given in MATS 1 Appendix E for the above, along with amplifying details
A

i) Transfer of responsibility of an a/c from one controller to another may be effected provided that;
- Satisfactory two-way speech communication is available between them;
- The a/c identity has been transferred to the accepting controller, or has been established by him, and;
- The accepting controller has been informed of any level or vectoring instructions applicable to the a/c at the stage of transfer
If the a/c route is not known, the offering controller is to pass the observed track, or reported a.c heading to the accepting controller.

ii) Radar handover (a/c identity) (position, SSR code and heading/observed track if own navigation) (level (additional information)
Additional information shall include transfer of control details if not coincident with transfer of communication

67
Q
  1. As stated in Mats 1: 10
    i) When is transfer of control achieved?
    ii) Where does it normally take place?
    iii) What phrase is specifically prohibited in response to an initial call from an a/c?
A

i) Transfer of control is achieved when a flight, which is operating in accordance with the coordination, has reached the position or level agreed between the transferring and accepting units

ii) Transfer of control normally takes place;
- At an agreed reporting point;
- On an estimate for an FIR boundary;
- At or passing an agreed level; or
- While the a/c is climbing or descending to a previously agreed level, provided that the transferring controller has ensured that standard separation will exist between the transferred a/c and all others for the remainder of the climb or descent

iii)
The phrase “continue as cleared” is not to be used in response to an initial call from an a/c

68
Q
  1. State the circumstances as laid down in MATS 2 under which you must provide radar identification of an a/c for another controller. Include “skip” sector techniques. 7
A

When an a/c is not displaying a discrete SSR identity, or the SSR response is garbled, it must be identified to the receiving sectore before entering its area of responsibility and before the transfer of communication.
When traffic is permitted to pass through the area of responsibility of a sector without communication, any a/c not displaying a discrete SSR identity is to be identified by the offering sector to the intermediate sector, which then becomes responsible for identifying the a/c to the receiving sector

69
Q
  1. According to MATS 1: 13
    a) State the definitions of OAT and GAT.
    b) As given in the lesson handout, list briefly the 5 methods a Military controller/aircraft may cross CAS
A

a)
OAT – flights conducted under the control or authority of the military ATS organization
GAT – flight conducted in accordance with the Regulations and Procedures for flight promulgated by the State Civil Aviation Authorities and operating under the control or authority of the civil ATS organisation

b) 	 - Radar crossing. Approved military can cross taking 5000ft or 5 miles on their own authority without reference to civil ATC. This can be reduced in MATS Pt 2 - Cleared Flight  Path (CFP). Requested from CAS sector by a military controller authorized to provide a radar crossing of CAS. Once approved the military have no requirement to avoid CAS A/c unless separation is being eroded. The a/c track will not be altered without prior approval
  • Radar Corridor. Provided for the military as a means of reducing coordination and positioned across airways in areas of high military activity. The corridor is activated by joint agreement of civil and military and may be activated for single/multiple a/c, or for a time period
  • Procedural Crossing. Used when a crossing cannt be achieved by a radar service. Is it obtained by the military from the relevant CAS controller
  • Pilot Initiated Uncontrolled Crossing. Used in an emergency;
    o Cross at intermediate 500ft
    o Cross at 90’ if possible
    o Squawk emergency
    o Report the circumstances to parent ACC on landing
70
Q
  1. Define “on-route ATS” according to MATS 1 5
A

This term is used routinely by ATC for coordination purposed within the UK ; ac are considered to be “on-route(ATS)” when flying along the alignment and within 5nm of the centerline of the published parameters of an Upper ATS Route (UAR) and other areas defined for the application of reduced coordination procedures

71
Q
  1. According to MATS 1, list the phenomena which will necessitate the issue of a SIGMET, together with explanatory notes 10
A
Severe icing
Sever turbulence
Severe mountain waves
Heavy hail
Heavy dust/sand storms
Volcanic ash clouds
Freezing rain
Tropical cyclones
Thunderstorms*
*this refers not only to TS but also to CB clouds that may not currently be accompanied by a TS
72
Q
  1. According to MATS 1, what meteorological information is available to a controller at an ACC. Do not go into detail with contents of such information. 8
A
Routine reports
Trend forecasts
Forecast for conditions in the FIR
Aerodrome forecast
SIGMETs
Forecast RPS values
Runway visual range
Advice on diversions
73
Q
  1. As given in the lesson handout, state the recommended “best practice” checklist for handing-over and taking-over a TMA position at an ACC. Give the titles in the checklist and, where applicable, give two examples within each.
A

Pressure – high/low, min stack level
Runway(s) in use
Area sector – bandboxed/split, frequencies
Weather – visibility, winds, avoidance
Non standard/priority – danger areas, EATs and holding, navaids, radar, NSFs
Strips to display

74
Q
  1. As given in the lesson handout, state the recommended “best practice” checklist for handing-over and taking-over an operational position for En-route at Medway ACC. Give the titles in the checklist and, where applicable, give two examples within each 11
A

Weather – pressures, NAT tracks, SIGMETs, upper winds, CBs
Equipment- serviceability, maintenance, radars, frequencies
Situation – flow, holding, NSFs, weather delays, military, danger areas
Traffic – strip to display, non rvsm

75
Q
  1. As stated in MATS 1, describe the process used by Area Control for the release of arriving aircraft to Approach control and list the information that Area control is required to provide. State any conditions that apply. (Do not include procedures above FL195, when approach sequencing is in force, aerodromes in Class G airspace and alternatives to the normal holding facility) 14
A

• Area control shall pass estimates on, and release inbound aircraft to Approach Control
• Inbound estimates shall be passed at least 15mins prior to the arrival of the aircraft at the designated approach fix
• Release messages shall be passed to Approach Control in a timely manner as specified in MATS Part 2 and shall contain the following;
o Aircraft identity, type and SSR code (if applicable)
o Point of departure
o Estimated time and level at the holding facility, or arrival time and level at the holding facility if release is given after arrival
o Release point
o Expected approach Time
o Contact point
• A/c released to Approach control must be within controlled or advisory airspace when the release becomes effective
• All other a/c at lower levels must be released or procedural separation provided
• A/c released to Approach Control shall not be leveled off, or climbed, above the level at the holding facility passed in the release message without coordination with Area Control

76
Q
  1. According to MATS 1, state when, and under what conditions, an RSYD restriction may be included in a departure clearance (10)
A

Outbound clearances may be issued which do not provide the required separation from either inbound a/c which have not yet passed their release points or from overflying a/c, provided that:

  • the outbound clearance is qualified by “release subject your discretion” together with details of the conflicting traffic; and
  • the release message on the inbound a/c, or full details of the overflying a/c, have already been passed

An RSYD restriction is intended to facilitate the overall expedition of traffic where Approach Control procedures may offer a more expeditous resolution of the confliction than Area Control procedures. It is the responsibility of the approach controller to determine whether he can provide the required separation in order to clear the outbound a/c for departure. Before the outbound a/c is transferred to area control, all conflictions must have been resolved, or coordination effected.

77
Q
  1. As stated in MATS 1, when is a radar release used and what factors governs its use? 9
A

Control of arriving a/c may be transferred to Approach Radar Control when other a/c would otherwise delay the released a/c’s progress, in accordance with the following conditions;

  • The transfer of control message is prefixed “radar release”;
  • Details of all conflicting a/c are passed to the approach radar controller;
  • Conflicting a/c are either transferred to Approach Radar Control or identified according to the accepting controller’s decision;
  • Neither the track nor the level of the conflicting a/c is altered without coordination.
78
Q
  1. Give an example for the correct phraseology for Avoiding Action 9
A

(a/c identity) AVOIDING ACTION, turn left/right immediately heading (three digits), traffic at (number) o’clock, (distance) miles, opposite direction/crossing left to right/right to left (behind/ahead) level information (climbing/descending) slow/fast moving (if relevant) type (if relevant)

79
Q
  1. According to CAP413, what information should be given when issuing traffic information or avoiding action? 10
A
  1. Relative bearing of the conflicting traffic in terms of the 12 hour clock with the optional prefix “left or right” as appropriate; or, if the a/c is established in a turn, the relative position of the conflicting traffic in relation to cardinal points, i.e. northwest, south etc;
  2. Distance from the conflicting traffic;
  3. Relative movement of the conflicting traffic; or, if the a/c is established in a turn, the direction of flight of the conflicting traffic in relation to cardinal points;
  4. Level of a/c, if known;
  5. Speed of conflicting traffic, if considered relevant; and
  6. Type of a/c, if considered relevant
80
Q
  1. According to MATS 1, what is the definition of a Traffic Service? 6
A

A traffic service is a surveillance based type of UK FIS where, in addition to the provisions of a Basic Service, the controller provides specific surveillance derived traffic information to assist the pilot in avoiding other traffic. Controllers may provide headings and/or levels for the purposes of positioning and/or sequencing ; however, the controller is not required to achieve deconfliction minima, and the pilot remains responsible for collision avoidance .

81
Q
  1. According to MATS 1, what is the definition of a Deconfliction Service? 7
A

A deconfliction service is a surveillance based ATS where in addition to the provision of a Basic Service, the controller provides specific surveillance derived traffic information and allocates headings and/or levels aimed at achieving planned deconfliction minima, or for positioning and/or sequencing.
However, the avoidance of other traffic is ultimately the pilot’s responsibility

82
Q
  1. According to MATS 1, what is the definition of a Basic Service? 6
A

A basic service is an ATS provided for the purpose of giving advice and information useful for the safe and efficient conduct of flights. This may include;
- Weather information
- Changes of serviceability to facilities
- Conditions at aerodromes
- General airspace activity information, and
- Any other information likely to affect safety
The avoidance of other traffic is solely the pilot’s responsibility

83
Q
  1. According to MATS 1, when providing a Deconfliction Service, what are the required deconfliction minima against: 11
    a) Un-co-ordinated traffic?
    b) Aircraft that are under the control of the same controller, or that have been subject to co-ordination?
A

a) The deconfliction minima against unco-ordinated traffic are:
ƒƒ
5 NM laterally (subject to surveillance capability and regulatory approval); or
ƒƒ
3000 ft vertically and, unless the SSR code indicates that the Mode C data has been verified, the surveillance returns, however presented, should not merge. (Note: Mode C can be assumed to have been verified if it is associated with a deemed validated Mode A code. The Mode C data of aircraft transponding code 0000 is not to be utilised in assessing deconfliction minima).

b) The deconfliction minima against aircraft that are being provided with an ATS by the same controller, or that have been subject to co-ordination, are:
ƒƒ
3 NM laterally (subject to surveillance capability and regulatory approval); or
ƒƒ
1000 ft vertically (2000 ft within active MDA/MTA above FL410, and above FL290 where one or both aircraft are not RVSM approved); or
ƒƒ
500 ft vertically (subject to regulatory approval).

84
Q
  1. According to MATS 1: 12
    a) List the information to be provided by an aircraft making an in-flight request to cross controlled airspace.
    b) Under what circumstances does the receipt of flight plan data constitute a clearance and what should controllers do upon receipt of a request to cross controlled airspace?
A

a) In flight requests will provide the following;
- Crossing position
- Requested crossing level and estimate for crossing position
- A/c identification and type
- Position and heading
- Level and flight conditions

b) Receipt of flight plan data does not constitute a clearance, except that when ATC has acknowledged receipt of the information from an a/c in flight and radio failure occurs before a clearance can be transmitted, the a/c may be expected to proceed in accordance with the flight plan.
A/c should be given a clearance in reply to an in-flight request, but if this is not possible the a/c is to be advised to remain outside controlled airspace, when to expect clearance and given a time check.

85
Q
  1. According to MATS 1: 13
    a) List the information to be provided by an aircraft making an in-flight request to join controlled airspace.
    b) Under what circumstances does the receipt of flight plan data constitute a clearance and what should controllers do upon receipt of a request to join controlled airspace?
A

a) In flight requests will provide the following;
- Position and heading
- A/c identification and type
- Departure aerodrome
- Desired level on airway or advisory route
- Level and flight conditions
- Estimated time at entry point
- Route and point of first intended landing
- True airspeed

b) Receipt of flight plan data does not constitute a clearance, except that when ATC has acknowledged receipt of the information from an a/c in flight and radio failure occurs before a clearance can be transmitted, the a/c may be expected to proceed in accordance with the flight plan.
A/c should be given a clearance in reply to an in-flight request, but if this is not possible the a/c is to be advised to remain outside controlled airspace, when to expect clearance and given a time check.

86
Q
  1. According to MATS 1 what should units equipped with Enhanced Mode S that enables DAPS do as a means of mitigating level busts?
    Include the associated phraseology. 5
A

Units equipped with enhanced Mode S surveillance systems that enable DAPS should display Selected Levels on the situation display as a means of mitigating the risk of level busts. The checking of selected levels shall not be used as a substitute for RT readback of level clearances.

“callsign, check selected level. Cleared level is (correct cleared level)”

87
Q
  1. According to the lesson handout:
    a) State 3 reasons why a pilot may request a hold.
    b) State 3 reasons why ATC may instruct an aircraft to hold.
    c) Define a holding area. 12
A

a) - Weather at destination (visibility, crosswinds)
- Night curfew, company positioning requirements
- Emergency situation (jettison or burn off fuel, allow time to resolve a/c degradation)

b) - Excess demand over capacity (arrivals exceed landing rate capacity)
- Runway or airport closed (equipment u/s, snow)
- ATC sector closed (radar failure, staff shortage, sector overload, incident)

c) Holding area : the area than an a/c is calculated to occupy while holding, allowing for navigational accuracy, level, wind and turbulence

88
Q
  1. According to MATS 1, state in detail the information that must be provided to and requested from pilots, whilst an arriving aircraft is holding for weather improvement. 6
A

Pilots of arriving a/c may elect to hold for the weather to improve. In addition to passing routine weather reports, controllers are to advise pilots of other relevant meteorological information

The first a/c to enter the holding pattern is to be advised “no traffic delay expected”. No instruction to leave the holding facility shall be given until the pilot indicates his intention to attempt a landing.

Subsequent a/c entering the holding pattern shall be advised “delay not determined, (number) a/c holding for weather improvement”
Controllers should establish the intention of any pilot if it has not already been stated

89
Q
  1. a) According to the AIP, what is the definition of a diversion?
    b) According to MATS-1, what actions do ATC take when a diversion is requested or considered expedient? 9
A

a) A diversion is the act of flying to an aerodrome other than the planned destination with the intention of landing there.

b) When a diversion is requested or considered expedient, the ACC shall:
- give the a/c a diversion message, including the latest weather information, clearance instructions, radio frequencies to be used etc
- give full information to the departure a/d, including details of the a/c, its clearance instructions, etc
- inform the original destination a/d of the diversion action

90
Q
  1. As detailed in the UK AIP, state the reports pilots are required to make during the holding phase of flight. 6
A

Pilots are required to report as follows;

  • The time and level of reaching a specific holding point to which cleared;
  • when leaving a holding point;
  • when vacating a previously assigned level for a new assigned level
91
Q
  1. As detailed in MATS 1:
    a. Define “Expected Approach Time”
    b. State what information must be given to aircraft that are instructed to hold en-route and what conditions apply. 7
A

a) Expected approach time is the time at which ATC expects that an arriving a/c, following a delay, will leave the holding fix to complete its approach for a landing. The actual time of leaving the holding fix will depend upon the approach clearance
b) When an a/c in instructed to hold en-route it must always be given an onward clearance time. A/c must never be told that such holding is indefinite. If it is not possible to make an accurate calculation immediately, the a/c shall be given an arbitrary OCT requiring 10 to 15 minutes holding, which must be amended to an accurate time before the arbitrary period has elapsed

92
Q
  1. According to MATS 1:
    a. State the conditions relating to the diversion of civil or military aircraft to RAF or USAF airfields.
    b. State the reasons that would cause a pilot to wish to divert to an airfield that not his planned destination. 13
A

a) Except in an emergency, a/c shall not be diverted to an RAF or USAF a/d without the prior approval of D&D.

A/c from the CIS, even though in an emergency, must not be diverted to RAF a/d except with the agreement of D&D.

In all other cases of emergency, controllers should, wherever possible, consult D&D before arranging for the a/c to land at an RAF or USAF a/d. RAD a/d that intent to keep open beyond the hours of watch published in the RAF En Route Supplement will notify D&D. This information will be available to the civil supervisor if required.

b) Diversions will normally be made for the following reasons:
1) when the weather at the planned destination is reported to be below the minima prescribed by an a/c operator for their a/c
2) when obstructions on the landing area, which constitute a hazard to a/c landing, cannot be cleared within a reasonable period
3) the failure of airborne equipment
4) the failure of essential ground aids to landing, in circumstances which would require their use
5) unacceptable delay due to congestion of air traffic
6) the closure of the a/d of destination

93
Q
  1. As stated in MATS 1:
    a. When may a controller suspect that an aircraft is in an emergency situation or has suffered unlawful interference?
    b. What are the definitions of two classes’ emergency messages?
    i) Distress
    ii) Urgency. 13
A

a) When;
1) Radio contact is not established at the time it is expected to be established;
2) Radio contact is lost
3) A pilot makes a report about the malfunctioning of his a/c or the unusual behaviour of persons on board;
4) The erratic behaviour of an a/c or position symbol is observed
5) it is overdue at an a/d; OR
6) the pilot reports that the a/c is short of fuel

b)

i) A condition of being threatened by serious and/or imminent danger and of requiring immediate assistance
ii) A condition concerning the safety of an a/c or other vehicle, or or some person on board or within sight, but which does not require immediate assistance

94
Q
  1. a. State 5 examples where ATC may suspect that an aircraft is subject to unlawful interference or airborne security situation when A7500 has not been selected.
    b. When an aircraft is observed to have selected A7500, state what phraseology should be used to verify that the selection is intentional. 7
A

a)
- unauthorised deviation from cleared flight profile
- refusal or inability to comply with ATC instructions (inc. vectoring) with no good reason
- loss of RTF contact, particularly associated with flight profile deviation
- unauthorised SSR code changes or extended use of IDENT
- use of non-standard phraseology by the crew, or other covert attempt to highlight the situation (marked change in voice characteristics, etc)
- selection of A7600 (RTF failure) or A7700 (emergency), particularly associated with flight profile deviation
- notification from non-official sources (news agencies, etc)
- open RTF transmitter from the cockpit;
- non-ATC related RTF transmission (e.g. political statement)
- non-specific threat passed via a third party

b) “callsign, confirm you are squawking assigned code (code assigned by ATC unit that it would otherwise be squawking)”

95
Q
  1. According to MATS 1, state the circumstances under which radio failure procedures shall be adopted. 7
A

Radio failure procedures shall be adopted when:

1) an a/c is observed to have selected A7600, and the pilot does not respond to ATC communication;
2) Communication cannot be maintained with an a/c on any flight which is being provided with an ATC or advisory service
3) Communication cannot be established with an a/c operating, or intending to operate, on an IFR flight plan within controlled or advisory airspace

96
Q
  1. State the standard radio failure procedures, as detailed in MATS 1, that a controller should follow, after attempts to establish normal two-way communication have failed. 12
A

1) Maintain separation between the radio failure a/c and other known traffic;
2) Give pertinent information about the movements of the radio failure a/c to other a/c in the presumed vicinity;
3) Ask a/c in the presumed vicinity to establish communications with the radio failure a/c and relay messages;
4) Use all means possible to monitor the a/c’s progress;
5) Attempt to relay information using ACARS/Datalink. Note : pilots may attempt to contact ATC using HF or if equipped with approved installations for accessing the UK telephone network, may attempt to contact ATC via the D&D cell;
6) Transmit on the appropriate frequencies;
a) level, route and EAT(or ETA) to which the radio failure a/c is assumed to be adhering; and
b) the weather conditions at the destination a/d, a suitable alternate, and if practicable, in areas suitable for a descent through cloud.
7) When, in consultation with the operator, instructions to divert have been transmitted to the radio failure a/c, inform the alternate a/d and request that they attempt to establish communications
8) If necessary, commence overdue action as described in Chapter 3

97
Q
  1. As detailed in MATS 1, how is a message received from an aircrafts company representative, affecting the safety of an aircraft in flight, to be passed to the aircraft? State the possible outcome if this is not done correctly. 4
A

A message affecting the safety of an a/c in flight, e.g. bomb warning, suspected damage to the a/c, etc, is to be passed to the commander immediately using the company representative’s precise wording. An abbreviation or précis could be misunderstood and lead to a wasteful operation or even a dangerous situation

98
Q
  1. As detailed in MATS 2, describe the general responsibilities of a sector controller. 13
A

On foundation/advanced, the sector controller is to:

  • Provide a safe, orderly and expeditious flow of air traffic within their area of jurisdiction;
  • Provide Air Traffic Control Service to a/c within CAS and may provide Basic, Traffic or Deconfliction Service to a/c outside CAS;
  • Provide an Alerting Service to all a/c in communication;
  • Maintain a listening watch and conduct standard RTF comms with a/c;
  • Maintain an up-to-date flight progress display for the purpose of conflict detection which should at all times reflect all clearance instructions issued, all communications received and all amendments made to coordination;
  • Verify the accuracy of flight data relating to the a/c that are being provided with the above Air Traffic Services;
  • Issue instructions to ensure that when a/c exit the sector airspace, it is in accordance with the terms of a Standing Agreement, coordination or release. When a/c cannot comply with defined procedures for Transfer of Control to the adjacent ACCs, ensure that coordination is effected;
  • Formulate crossing and joining clearances as required
99
Q
  1. As detailed in MATS 2, describe the general responsibilities of a co-ordinator (not support controller) on the advanced course. 13
A
  • Maintain an up to date data display;
  • Ensure that traffic enters the sector in a safe and efficient manner;
  • Co-ordinate the passage of a/c, which are not operating under the terms of a Standing Agreement, into and out of the sector. Allocated exit levels should take into account expected a/c performance;
  • Act as a phone filter for the sector controller;
  • React to requests by the sector controller;
  • In consultation with the sector controller, assimilate into the traffic pattern those a/c crossing, joining and leaving the sector airspace. Liaise with relevant parties and annotate the strip data display accordingly;
  • Respond efficiently to requests from APP units for airways clearances on traffic departing via the sector and annotate the strip data display accordingly;
  • Be the POC for any unusual situations/emergencies related to the sector;
  • Issue joining clearances in accordance with MATS 2 procedures;
  • Notify Approach Units of arrivals via the sector, efficiently arrange their future transfer of control, and annotate the strip data display accordingly
100
Q
  1. As detailed in MATS 1;
    i. What are the various sources by which a controller may be alerted to the presence of adverse weather?
    ii. What should pilots be advised of when weather is observed on the situation display, or is known to be present?
    iii. What should a controllers response be when a pilot requests an alternative heading or route for weather avoidance? Include any conditions.
    iv. When weather avoidance will take an aircraft outside controlled airspace, how should a controller respond? Include any conditions.
    v. If a pilot is cleared to follow his own navigation, or accepts a heading, in order to avoid weather, what should a controller request him/her to do? 15
A

i) A controller may be alerted to the presence of adverse weather by a variety of sources, including;
- radar observations
- reports from pilots or adjacent ATSUs
- Met Office reports
- unit briefings

ii) When weather is observed on the situation display, or is known to be present, pilots should be advised of the weather’s location and, if known, intensity and direction of movement
iii) When a pilot requests an alternative heading or route for weather avoidance, controllers shall accommodate such requests, taking into account the prevailing traffic situation. When a pilot’s request cannot be accommodated, controllers shall offer alternative weather avoidance clearance, or explain to the pilot why his request cannot be met
iv) When weather avoidance will take an a/c outside CAS, the pilot must be informed of this and offered an appropriate service. Pilots routing outside controlled airspace for weather avoidance should be issued a clearance to rejoin as required
v) If a pilot is cleared to follow his own navigation, or accepts a heading, in order to avoid weather, he should be requested to report when able to accept vectors back on track.

101
Q
  1. According to MATS 2, detail the conditions under which an aircraft may enter the airspace under jurisdiction of another sector without individual co-ordination. Include all provisions mediation and/or cancelling of agreements and for aircraft cruising below an agreed level.
A

An a/c may enter the airspace under the jurisdiction of another sector without individual coordination when it:

  • Is following a standard route on its own navigation, or a specified track on a radar heading, and;
  • Has been cleared to, or is at, an agreed level before communication is transferred to the receiving sector.
  • When applying level by restrictions to descent clearances, controllers should use the word abeam if the a/c is on a radar heading and the track is not going to overfly the defined reference point.
  • A/c may be transferred in trail with a minimum separation of 15nm where the rear a/c is the same speed or slower than the lead a/c.
  • The particular flights and the agreed levels are detailed in the operational sector sections of the Manual.
  • The coordinator, following agreement with the sector controller, or at the request of the sector controller, may modify or cancel Standing Agreements on a temporary basis.
  • A/c cruising below an agreed level are to be coordinated individually.
102
Q
  1. According to MATS 2, what is the transfer of control point for Medway TMA inbounds cruising below the agreed level? Include in your answer any conditions. 5
A

Transfer of control from an en-route sector to MedTC is coincident with transfer of
communications, provided that the following criteria are met:
- The flights must be inbound to aerodromes beneath the Medway TMA;
- The flights must be following a standard route on their own navigation, or a
specified track on a radar heading;
- Each flight must be individually co-ordinated into the Medway TMA.