Shared Flashcard Set

Details

44WG Core ACS
Exam Questions 25 May 2017
124
Aviation
Professional
07/18/2015

Additional Aviation Flashcards

 


 

Cards

Term
Restricted area 123 is active by NOTAM to FL150. ABC is operating at FL150, is ABC separated from activities within R123? (1 mark)
Definition
Yes (1) Aircraft operating at the vertical limits of Prohibited Areas, Restricted Areas and Airspace Reservations are separated from activities within those airspaces.
Term
You have accepted a ‘clean hand-off’ from the adjacent radar control agency. What level and track restrictions apply without the need for back coordination? (2 marks)
Definition
…permits level or track changes (1) within 45 degrees of the nominal forward track (1)
Term
You wish to voice deactivate your Class C CTR and Restricted Areas 20 minutes prior to the original published cessation time. Do you have to issue a new NOTAM to achieve this? Do you need an agreement from the accepting authority? (2 marks)
Definition

No (1)

 

The published cessation time of a Restricted or Danger Area or Class C CTR may be amended by voice without the issue of a NOTAM provided the new cessation time is less than one hour prior to the original published cessation time.

Yes (1)

When less than 30 minutes notice is provided, any early deactivation of a Restricted Area or Class C CTR must be agreed to by the accepting authority.

Term
GIA728 has notified you that they are manoeuvring in response to an Traffic Alert and Collision Avoidance System (TCAS) Resolution Advisory (RA) what are your immediate actions? (2 marks)
Definition

a) Do not issue instructions that contradict those issued by the RA (1); and

b) Acknowledge the report by using the phrase “(callsign) ROGER” (1)

Term
When does ATC resume responsibility for separation following manoeuvres executed by an aircraft in response to an Airborne Collision Avoidance System (ACAS) Resolution Advisory (RA) (4 Marks)
Definition

Resume responsibility for separation after:

a) a separation standard is re-established (1); and b) the responding aircraft has:

i) returned to its assigned level (1) and the pilot advises that the ACAS manoeuvre is completed; (1) or

ii) executed an alternate clearance.

Term
Who is responsible for declaring an emergency phase and in what circumstances? (specific examples not required) (3 marks)
Definition

The ATS Officer first becoming aware (1)

of an aircraft operating in other than normal circumstances (1), and

there is doubt concerning the aircraft's safety (1), is responsible for declaration of the phase appropriate to the emergency situation.

Term

What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer.

a. QFA801, an arriving B738 deviates from their cleared route to avoid hazardous weather into R666, a restricted area active for naval firing. (2 marks)

Definition
Declare an ALERFA (1) when an aircraft deviates from it’s cleared route or track into active Restricted Area without a clearance (1).
Term

What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer.

b. You have accepted radar handoff from Centre on QFA793 and five minutes later, having conducted initial communications checks, there is no contact with the pilot (include in answer by what time this phase should be declared). (2 marks)

Definition

Declare an INCERFA (1) when a pilot fails to report after an ATS directed frequency change at an appropriate time and

no later than 15 minutes after the call is due. (1)

Term

What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer.

c. DNGO50, an arriving B350, has reported a hydraulic failure. The pilot reports the controls have become slow to respond however the pilot remains in control of the aircraft. (2 marks)

Definition
Declare an ALERFA (1) immediately when information has been received which indicates that the operating efficiency of an aircraft has been impaired to the extent that the safety of the aircraft may be affected. (1)
Term

What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer.

d. QLK757, a DH8B, is inbound to your airfield and begins to squawk 7500. The aircraft begins to accelerate and descend rapidly. You try to contact QLK757 without response. (2 marks)

Definition
Declare a DETRESFA (1) immediately when information has been received which indicates that an aircraft is known or believed to be the subject of hijack (1)
Term

What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer.

e. TROJ37, a C130 on a low level NAVEX, has recorded a NOCOM time of 0720Z for cancellation on your frequency. It is now 0750Z and, having previously declared an ALERFA, you have completed wide-spread communication checks without success. CO 37SQN has been informed.

Definition
Declare a DETRESFA (1) following the alert phase declared because of a failure to report, where the absence of news from widespread communications checks and unsuccessful inquiries point to the probability that an aircraft is in distress. (1)
Term

What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer.

a. You receive a phone call from Mrs Fisher who is concerned because Mr Fisher has not yet returned from his Saturday flight in their ultra-light and he is normally home by now. Mr Fisher has not filed a flight plan. (2 marks)

Definition
Declare an INCERFA (1) immediately when information is received that an aircraft, for which flight notification has not been lodged, is missing. (1)
Term

What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer.

b. BYK, a VFR C210 cleared direct to your airfield, is deviating from the cleared track and appears to be having difficulty maintaining the assigned altitude. The pilot advises they are ‘OPS NORMAL’ however sounds uncertain and flustered. (2 marks)

Definition
Declare an INCERFA (1) immediately when an aircraft is known or believed to be subject to irregular operation, namely, when it is not on its proper track or at its proper level. (1)
Term
What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer. c. COQ, a VFR C310 on returning from a Low Level NAVEX, reports visibility reduced to 1000 metres due to very heavy rain. (2 marks)
Definition
Declare an ALERFA (1) immediately when a flight restricted to VMC is operating in IMC. (1)
Term
What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer. d. PTHR50, a Hawk returning from a sortie, declares a PAN PAN due to an UNDERCARRIAGE MALFUNCTION. (2 marks)
Definition
Declare an ALERFA (1) immediately when a PAN call is received unless the circumstances indicate a DISTRESS phase is more appropriate. (1)
Term
What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer. e. TAIP05, an AS350 Squirrel helicopter, reports they have lost their engine and are putting the helo down in a nearby paddock. (2 marks)
Definition
Declare a DETRESFA (1) immediately when information is received which indicates that a pilot is about to make a forced landing. (1) or Declare a DETRESFA (1) immediately when information is received which indicates that the operating efficiency of an aircraft has been impaired to the extent that a forced landing is likely. (1)
Term
What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer. a. CHP, a R44, is on the ground within your CTR ready to become airborne. You issued a clearance at 0130Z and instructed CHP to report airborne. At 0140Z you have not heard from CHP and have commenced communication checks (include in answer by what time this phase should be declared). (2 marks)
Definition
Declare an INCERFA (1) when a pilot fails to report DEPARTURE, after a call notifying readiness to take off at an appropriate time and no later than 15 minutes after the initial call. (1)
Term
What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer. b. You observe an aircraft in your Restricted Area squawk 7700 and you are unable to establish communications with that aircraft.
Definition
Declare a DETRESFA (1) when a surveillance emergency indication is received. (1)
Term
What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer. c. CHNK45 is operating in the Low Flying Area with an Ops Normal time of 2330Z. At 2340Z, having commenced communication checks, there has still been no contact with CHNK45 (include in answer by what time this phase should be declared). (2 marks)
Definition
Declare an INCERFA (1) when a pilot fails to report OPS NORMAL at an appropriate time and no later than 15 minutes after the report is due - 2345Z. (1)
Term
What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer. d. You hear a continuous alarm on 121.5 (2 marks)
Definition
Declare a DETRESFA (1) immediately when a radio distress beacon has been activated for a period greater than 10 seconds. (1)
Term
What Emergency Phase, if any, should be declared in the following scenarios? Explain the reason for your answer. e. Due to bad weather DAI, a VFR C172, is returning to your airfield and will not arrive before last light. The pilot is not night VFR endorsed. (2 marks)
Definition
Declare an ALERFA (1) immediately when a flight restricted to daylight operations is operating at night. (1)
Term
As the APR controller, you receive the following transmission from a departing aircraft: “PAN PAN, PAN PAN, PAN PAN, STAL207, high temperature indication, POB 4, request to return to land”. How would you acknowledge this emergency? (3 marks)
Definition
“STAL207 (1), (location) APPROACH (1), ROGER PAN PAN” (1).
Term
You, as APR, have received emergency details from CEN about an arriving B350, HUDSON10 who has declared a PAN PAN due to an electrical failure. What phrase would you use on first contact to indicate knowledge of the emergency? (1 mark)
Definition
“HUDSON10, (location) APR, PAN PAN [electrical failure] ACKNOWLEDGED” (1)
Term
You are in the process of transferring the responsibility of an aircraft to another ATS position. Just prior to hand off the aircraft declares an emergency. Which ATS position is to provide the initial response and assistance? (1 mark)
Definition
When an aircraft declares an emergency and responsibility for the aircraft is in the process of being transferred to another ATS position; provide initial response and assistance from the ATS position where the emergency was declared. (1)
Term
Upon receiving the following SSR codes: 7500, 7600 and 7700, in accordance with what procedures shall controllers act? (3 marks)
Definition
Unlawful Interference procedures (1); Aircraft Radio/Communications Failure procedures (1); and Emergency procedures (1).
Term
What are the dimensions of a “vapour zone”? (4 marks)
Definition
Defined as that airspace 1000 FT above (1), 2000 FT below (1), 5 NM horizontally behind (1) and 1/2 NM on each side of the aircraft (1).
Term
A ‘vapour zone’ shall be treated as reserved airspace from the time dumping is expected to commence until what time after it has been completed (1 mark)
Definition
From the time dumping is expected to commence until 5 minutes (1) after it has been completed.
Term
Describe your actions in the event that fuel is dumped in an emergency or without adequate warning or delay? (4 marks)
Definition

If fuel is dumped in an emergency, or fuel must be dumped without adequate warning or delay:

a. make every effort to keep other aircraft clear of the vapour zone (1);

b. note the area where the fuel was dumped (1);

c. record the weather conditions (1); and

d) report the incident to the appropriate authority without delay.

Term
What is the recommended minimum height for non-emergency fuel dumping? (2 marks)
Definition
6,000 FT(1) AGL (1)
Term
You have received a radio transmission from SCD, a VFR light aircraft, who is outside controlled airspace and has inadvertently flown into cloud. The pilot is anxious and asks for help. What points should you remember when providing assistance? (6 marks)
Definition

"Points to remember are:

a. positive identification (1);

b. check fuel reserves (1);

c. check of nearest available aerodrome (1);

d. instil confidence in the pilot (1);

e. keep instructions simple (1); and

f. avoid transponder code changes as they can lead to disorientation.

Term
GIA555 reports that they are diverting right of track to avoid weather. Recognising that this diversion will infringe an active restricted area that is not under your control, you issue a safety alert and provide an alternative clearance left of track. Th
Definition

When deviation into active restricted areas is unavoidable:

a. upon entry, advise the pilot that they are no longer operating under a clearance (1) and are proceeding at their own risk (1)

b. terminate control services (1)

c. continue to provide Flight Information and Alerting services; and

d) declare an Alert Phase.

Term
What methods are available for maintaining SARWATCH on an aircraft? (6 marks)
Definition

"Maintain SARWATCH via:

a. continuous visual (1) or surveillance (1) monitoring, or

b. a time nominated by ATS or a pilot (1) which may include:

1. an estimate (1)

2. a NOCOM time (1)

3. a time to report, (1) such as SKED or an operations normal time

Term
When conducting hand-offs on formation or in-company flights, what additional details are to be included in the hand-off information? (3 marks)
Definition

When coordinating formation or in-company flights, include the type of formation (1) and dimensions if appropriate (1).

For tactical formations or in-company flights, include the disposition of group members in the coordination. (1)

Term
In addition to Pilot-to-ATS readback requirements, what must be readback in ATS-to-ATS coordination? (5 marks)
Definition
Read back QNH (1) and the words VISUAL (1), AMENDED (1), RECLEARED (1) or CANCEL CLEARANCE (1) in addition to the Pilots-to-ATS readback requirements.
Term
CLAS75 calls you (APR) and declares MINIMUM FUEL for recovery to your airfield. What phraseology will you use to coordinate this information to TWR and how shall TWR respond? (2 marks)
Definition
"Advise receiving Controller details of the emergency. APR: “CLAS75 MINIMUM FUEL” (1); TWR: “CLAS75 MINIMUM FUEL ACKNOWLEDGED” (1)."
Term
You have concurred a clearance for AR3 to transit the edge of your airspace at A050, remaining on CENR’s frequency. CENR subsequently calls you back requesting an amended level A060. You have no other traffic; what phrase can you use to indicate that AR3 level or track may be adjusted without further coordination?
Definition
"APR: “NO RESTRICTIONS” (1). CENR: A readback is not required. (1)"
Term
Under what circumstances shall a safety alert be issued? (5 marks)
Definition
Unless the pilot has advised that action is being taken to resolve the situation or that the other aircraft is in sight, issue a Safety Alert prefixed by the phrase 'SAFETY ALERT' when you become aware that an aircraft is in a situation that places it in unsafe proximity to (1):
a. terrain; (1)
b. obstruction; (1)
c. active restricted or prohibited areas; (1) or
d. other aircraft. (1)
Term
When would a controller issue avoiding action advice? (3 marks).
Definition

Issue traffic avoidance advice, prefixed by the phrase 'AVOIDING ACTION' (1), to an aircraft that:

a. is receiving an ATS surveillance service (1); and

b. in your judgement, is in a situation that places it at risk of a collision with another aircraft under surveillance.

Term
In order to assist a pilot in identifying another aircraft, what information may be contained in the traffic information provided? (8 marks)
Definition

To assist the pilot in identifying the other aircraft, include relevant information from the following:

a) aircraft identification;

b) type, and description if unfamiliar;

c) position information;

d) estimated time of passing or closest point of approach;

e) direction of flight or route of aircraft;

f) level;

g) intentions of the pilot, such as:

i) initial departure track and intended cruising level; and

ii) inbound track or direction, level and next estimate; and

h) advice that an aircraft is not yet on the appropriate frequency.

Term
List five methods of providing position information when passing traffic information to a pilot. (5 marks)
Definition

Provide position information by:

a. clock reference; (1)

b. bearing and distance; (1)

c. relation to a geographical point; (1)

d. reported position and estimate; (1) or

e. position in the circuit (1)."

Term

Identify what, if any, elements are missing from the following airways clearances. (4 marks)

a. “QFA300 cleared via ALBEE FPR, FL350, ALBEE 2 departure, squawk 1234”

b. “DAGR05 cleared Low Flying Area not above A030V VSD squawk 4321”

c. “STAL15 cleared WASOE direct A040 VSD”

d. TIGR56 cleared to Jimmy’s Bridge via position FE060032, low level, squawk 3131”

Definition

destination (1)

route of flight (1)

nil (1)

assigned level (1)

Term
Until what point, or until what time, does a clearance apply? (5 marks)
Definition

The clearance, and its amendments during the flight only apply:

a) to the first point at which the aircraft leaves controlled airspace;

b) to the first landing point if the flight is wholly within controlled airspace;

c) to the clearance limit if issued;

d) until the expiration of a clearance void time; or

e) until cancelled by a controller.

Term
When may the phrase ‘Flight Planned Route’ be used and what does it describe? (3 marks)
Definition
You may use the phrase 'FLIGHT PLANNED ROUTE' in an initial airways clearance (1) to describe any route or portion of route that is identical to that filed in the flight notification (1) after providing sufficient route details to definitely establish the aircraft on its route (1).
Term
To alert the pilot that an initial airways clearance is not in accordance with the Flight Plan, what phrase is the varied route and/or level clearance to be prefixed with? (1 mark)
Definition
If the route and/or level issued in the initial airways clearance is not in accordance with the Flight Plan, prefix the route and/or level clearance with AMENDED. (1)
Term
CTRY21 is maintaining a cruising level of FL150 outbound from your aerodrome. You have coordinated with Centre for CTRY21 to receive track shortening direct to STANDO for re-interception of cleared route. What phraseology will you use to change CTRY21’s p
Definition
“CTRY21 recleared (1) direct STANDO, rest of clearance unchanged, FL150” (1)
Term
When is a description of the holding path to be flown not required at a clearance limit? (2 marks)
Definition

A description of a holding path to be flown at a clearance limit is not required when:

a. the holding fix is published in aeronautical documents; (1) or

b. it has been imposed temporarily, and it is expected that the requirement to hold will have lapsed before the aircraft arrives at the designated holding fix (1).

Term
When cancelling a clearance limit what must be given to the aircraft? (2 marks)
Definition
When a clearance limit is cancelled, issue an onwards clearance specifying the level (1) and route to be flown from that point (1).
Term

Which of the following instructions to aircraft are not designated readback requirements for pilots to ATC? (2 marks)
a. TACAN CH77
b. maintain A030
c. contact TWR 132.8
d. MAPL10, QNH 1017
e. all stations, qnh 1017
f. cleared visual approach
g. turn right heading 210
h. make left turn
i. reach A030 by 10 DME
j. fly heading 320
k. expect RWY 28
l. squawk 2314
m. cleared RWY 17 ILS approach
n. resume normal speed
o. TACAN CH84

 

Definition

e. all stations, QNH 1017 (1)

k. expect RWY 28 (1)

Term
When may a controller issue a special VFR clearance for a VFR flight? (6 marks)
Definition
A SPECIAL VFR clearance may be issued, at pilot request (1), for a VFR flight within a CTR (1), or in CTA next to the CTR for the purpose of entering or leaving the CTR (1), provided:
a. it is by day; (1)
b. VMC does not exist; (1) and
c. an IFR flight will not be unduly delayed.(1)
Term
Which flight level in the Standard Pressure Region is precluded from use when the QNH is less than 1013 HPA and more than or equal to 997 HPA? (1 mark)
Definition
FL110 (1)
Term
When shall local QNH be passed to an aircraft descending in controlled airspace? (1 mark)
Definition
Provide an aircraft descending in controlled airspace with a local QNH when it is first assigned an altitude (1).
Term

STKR14 has been cleared to your aerodrome at A040. STKR14 has requested descent but is not yet ‘visual’. Between their present position and the aerodrome, they will remain in the same RTCC and MSA step. The MSA is A022 and the RTCC lowest assignable altitude is A030

a. you intend on vectoring STKR14 for sequencing, and

b. you don’t intend on vectoring STKR14? (2 marks)

Definition

A030 (1)

A022 (1)

Term
What considerations shall level assignment take into account? (5 marks)
Definition

separation (1);

terrain clearance (1);

the tables of cruising levels (1);

provision for radio failure (1); and

priority (1)."

 

STTPP

Term
A pilot requests a non-conforming level. In order to be considered what phrase must be included in this request? (1 mark)
Definition
DUE OPERATIONAL REQUIREMENT (1);
Term
AR3, an IFR BE20 is cruising in your airspace at A040 and requests to leave your CTA on descent. The lower level of your airspace is A030 and the LSALT in that area is A034? What clearance can you provide AR3 to facilitate this where AR3 has reported ‘visual'
Definition
“AR3 leave control area descending (1) visual (1)”
Term
When may a pilot be assigned a level below the LSALT? (4 marks)
Definition

You may assign a pilot a level below LSALT provided that:
a. by night, to an IFR pilot that has reported 'VISUAL' (1) or a VFR pilot, you prefix the clearance with 'WHEN ESTABLISHED IN THE CIRCLING AREA, ...' (1); or


b. by day:
      i) the IFR pilot has reported 'VISUAL' (1);  and
      ii) 'VISUAL' is appended to the level assigned (1).

Term

What level can be assigned in an airways clearance in the following scenarios. It is night time, VMC and the 10NM MSA is A025.

a. BKBD (2 x F18) requests clearance gate 1, A015.

b. BKBD (2 x F18) requests clearance gate 1, A010 Military Terrain Clearance.

c. ACHR (2 x C130) requests clearance Bathurst Direct, A015 NVG.

d. RSCU27 (BK117) requests clearance Wisemans Ferry direct, A010 visual.

e. RSCU27 (BK117) requests clearance Wisemans Ferry direct, A010 NVG.

 

 

Definition

a. A025

b. A010 MTC

c. A015 NVG

d. NA025 Visual

e. A010 NVG

 

 

 

 

Term
SEV, a local traffic helicopter, advises they have authorisation from CASA to operate VFR at night below LSALT. SEV requests clearance, at night, to operate within 5NM of Jimmy’s Bridge not above A010. What may you clear SEV? LSALT is A025. (1 mark)
Definition
"Ensure the assigned level does not prevent the pilot operating at, or climbing to, LSALT, by stating: ATC: ""SEV, cleared to operate within 5NM of Jimmy’s Bridge NOT ABOVE A025"" (1)"
Term
HUTR is passing A060 and has a clearance to climb to FL120 with a requirement of R100 x 15 TAC. If you issue further climb to FL310, is the requirement still in effect? Explain (2 marks)
Definition

No. (1)

 

Repeat level restrictions/requirements issued by ATC in air-ground communications in conjunction with subsequent level clearances in order for them to remain in effect. (1)

Term
QFA973 is inbound and you need to slow the aircraft down to sequence with other arrivals. What considerations shall you take into account when applying speed control to QFA973? (6 marks)
Definition

When applying speed control:

a) avoid alternate decreases and increases in speed;

b) avoid the use of minimum speed when a higher speed is practicable;

c) do not vary the final approach speed;

d) advise the pilot of future intentions;

e) advise the pilot to resume desired speed as soon as the application of speed control is no longer necessary; and

f) make speed adjustments judiciously in advance of the point at which the new speed is required, depending on the aircraft type and amount of adjustment involved.

Term
To what type of flights is speed control not to be applied? (2 marks)
Definition
Do not apply speed control to formation (1) or MIL SPEC REQ (LTD FUEL ENDCE) (1) flights.
Term
SCL, a VFR aircraft squawking 1200, has reported overhead Gordon Bridge requesting a clearance to enter your airspace. Gordon Bridge is displayed on your situation display. What methods are at your disposal to correctly identify this aircraft? Include in your answer three methods of identification if you were utilising primary surveillance radar only. (5 marks)
Definition

Establish identification by one of the following procedures:
Observe compliance with an instruction to:
      i. operate the Special Position Identification (SPI) (1) or
      ii. change to a specific SSR code (1)

Correlate a particular radar position symbol with an aircraft reporting its position over, or bearing and distance from, a point shown on the situation display, provided the track of the radar position symbol is consistent with the aircraft path or reported heading (1)

Ascertain the aircraft heading, if required, and following a period of track observation:
      i. instruct the pilot to execute one or more changes of heading of 30 degrees or more and correlate the movements with the aircraft’s acknowledged execution of the instructions given; (1) or
      ii. correlate the movements of a particular radar position symbol with the reported manoeuvres of an aircraft. (1)

Term
BUCK22, F18 calls your approach frequency for recovery from Training Area ALPHA (The aircraft identification has not been transferred from another agency). You are operating in SSR mode only and observe BUCK22’s label in Training Area BRAVO. Is BUCK22 positively identified? Explain your answer. (2 marks)
Definition
No. (1) Correlate an alpha-numeric label with an aircraft's ATS surveillance system position indication provided the correlation is consistent with the aircraft's expected position. (1)
Term
You have issued departure instructions of “VIPR25 right unrestricted” for a PC9 departing on a VSD. You subsequently observe a radar position indication becoming airborne from the duty runway and commence a right turn. Describe two ways of identifying VIPR25, applicable only to departures. Include any conditions and assumptions. (4 marks)
Definition
Establish identification by one of the following procedures:
Correlate an observed radar position symbol with manoeuvres currently executed by a departing aircraft which acknowledged instructions to that effect (1) provided that identification is established within 3 NM of the radar sensor. (1)
or
Correlate an observed radar position symbol with an aircraft which is known to have departed (1) provided that the identification is established within 1 NM from the end of the runway used (1)
Term
When shall pressure altitude-derived level information be verified? (3 marks)
Definition

"Verify the accuracy of displayed pressure altitude-derived level information:

a. as soon as possible after initial contact with an aircraft (1) and prior to use (1); and

b. where continuous monitoring has not been carried out (1)."

Term
How shall pressure altitude-derived level information be verified? (4 marks)
Definition

"Verify by simultaneous comparison with (1):

a. altimeter-derived level information received from the same aircraft by radiotelephony (1); or

b. the aerodrome elevation during the take-off roll (1), provided that the level information subsequently indicate a positive climb after take-off.

Term
What is the tolerance for displayed pressure altitude-derived level information? (1 mark)
Definition
The tolerance for pressure altitude-derived level information displayed to the controllers is +/- 200 FT. (1)
Term
What are your initial actions when the displayed pressure altitude-derived level information differs from the pilot reported or known altitude by more than 200 FT? What are your actions if the discrepancy remains after your initial actions? (5 marks)
Definition

When the displayed pressure altitude-derived level information differs from the pilot reported or known altitude by more than 200 FT:
a. advise pilot (1)
b. request check of pressure setting; (1) and
c. confirm current level.(1)

 

Where there is a continuing discrepancy after confirmation of the correct pressure setting:
a. request the pilot to stop pressure altitude data transmission provided there is no loss of position and identification information; (1) and
b. coordinate this action with the next ATC unit. (1)

Term
How shall a controller relay identification of an aircraft when transfer of control is not affected? How shall the receiving controller respond? (2 marks)
Definition

When relaying the identification of an aircraft from one controller to another, and transfer of control is not effected, the relaying Controller advises that the aircraft is FOR IDENT (1).

The receiving Controller acknowledges identification by replying with the callsign for the aircraft. (1)

Term
Describe four methods of transferring identification? (4 marks)
Definition

Effect transfer of identification by one of the following methods:
a. designation of the position symbol by automated means,  provided that only one position is indicated and there is no doubt as to the correct identification (1)
b. notification of the aircraft’s discrete SSR code or aircraft address (1)
c. notification that the aircraft is SSR Mode S equipped with an aircraft identification feature when SSR Mode S coverage is available (1)
d. not applicable
e. direct designation (pointing with the finger) of the position symbol, on a shared or an adjacent situation display. Be aware of any errors resulting from parallax effects. (1)

f. designation of the position symbol by reference to, or in terms of bearing and distance from, a geographical position or navigational facility accurately indicated on both situational displays. (1)
g. instruct the aircraft to change SSR code and the change is observed by the accepting Controller.
Note: requires prior coordination between Controllers, as observed indications by the accepting Controller are of short duration. (1)
h. instruct the aircraft to SQUAWK IDENT  and the change is observed by the accepting Controller.
Note: requires prior coordination between Controllers, as observed indications by the accepting Controller are of short duration. (1)

Term
When conducting a verbal radar hand-off, what phraseology is to be used by the transferring controller? How shall the receiving controller respond? (2 marks)
Definition
"Do not transfer responsibility for an aircraft until the receiving controller advises that identification is complete by use of the phrase: Transferring Controller THAT IS.....(callsign) (1) Receiving Controller ACCEPT.....(callsign) (1)"
Term
Position information will be provided when required by circumstances or when requested by another ATC unit. With reference to what shall aircraft position information be provided? (5 marks)
Definition
Provide position information when required by circumstances or when requested by another ATC unit. Pass the information with reference to:
a. a bearing or track and distance from any significant point (bearing may be magnetic or as points of a compass); (1)
b. a well-known geographical position; (1)
c. a distance to runway touchdown point if the aircraft is on final approach; (1)
d. a distance to runway touchdown point as track miles to run; (1) or
e. distance and direction from the centre line of an ATS route.(1)
Term
List five circumstances where an aircraft being provided with an ATS surveillance service shall be advised of its position (5 marks, 1 mark per circumstance)
Definition

Advise an aircraft provided with an ATS surveillance service of its position:
a. on identification, unless identification is established:
      1. based on a pilot’s report of the aircraft’s position; or
      2. within 1 NM of the runway on departure, if the observed position on the situation display is consistent with the aircraft’s time of departure; or
      3. by use of ADS-B aircraft identification, SSR Mode S aircraft identification or assigned discrete SSR codes if the location of the observed position symbol is consistent with the current flight plan of the aircraft; or
      4. by transfer of identification
b. after commencement of vectors by approach control as soon as a distance to run to touchdown becomes evident
c. when a pilot requests position information
d. when an identified aircraft’s reported position differs significantly from its observed position
e. when an identified aircraft is observed to have deviated from its previously approved or advised route

f. when the aircraft is resuming its own navigation after vectoring
g. when a regular circuit pattern is used to vector an aircraft onto the final approach path, at least once on each leg; and
h. when provided with vectors for a straight-in approach, at least once before commencement of final approach.

Term
When providing an ATS surveillance service using radar, which aircraft are you not permitted to vector? (3 marks)
Definition

Do not vector:
a. not applicable
b. not applicable
c. special VFR aircraft, except when warranted by emergency conditions; (1) or
d. an aircraft that is OCTA, except when warranted by emergency conditions; (1) or                             

e. an aircraft at a pilot calculated LSALT that is below the lowest applicable grid LSALT, MSA or MVA. (1)

Term
What information shall a pilot receive when terminating vectors? (5 marks)
Definition
When terminating vectoring of an aircraft provide the aircraft with position information (1) (including displacement from nominal track if applicable) (1) and one of the following:
a. A heading as necessary to intercept the nominal track of a pilot interpreted navigation aid appropriate to its cleared route; (1)
b. A clearance direct to a pilot-interpreted navigation aid (e.g. NDB or VOR site) for interception of its cleared route; (1) or
c. A clearance direct to an area navigation waypoint for interception of the aircraft’s cleared route for approved SCNS aircraft. (1)
Term
Under what conditions may you permit an aircraft being vectored to arrange its own terrain clearance? Phraseology not required. (3 marks)
Definition

in VMC (1)

by day (1)

provided that the responsibility is specifically assigned to the pilot. (1)

Term
How shall a controller assure separation? (5 marks)
Definition

Assure separation through the process of

assessing traffic (1),

identifying conflicts (1),

planning to ensure separation (1),

executing the plan (1) and

monitoring the situation to ensure the standard is not infringed (1).

Term
To what extent are variations of separation standards to be approved for visiting military aircraft? (1 mark)
Definition
Vary procedures, after appropriate consultation, for visiting military aircraft only to the extent approved at that aircraft's home base. (1)
Term
If during an emergency situation, such as a radar failure, it was not possible to ensure that the applicable procedural separation minima would be maintained, what emergency separation standard may you temporarily apply? State any requirements/conditions.
Definition

If during an emergency situation, such as a radar failure, it is not possible to ensure that the applicable procedural separation minima will be maintained,

you may temporarily use half the applicable vertical separation minima. (1)

Issue traffic information to affected aircraft. (1)

Term
How may ATS surveillance system separation be applied between an aircraft taking off and a preceding departing aircraft, or other ATS surveillance system controlled traffic? (6 marks)
Definition
You may apply ATS surveillance system separation between an aircraft taking off and a preceding departing aircraft, or other ATS surveillance system controlled traffic, provided:
a. there is reasonable assurance (1) that the departing aircraft will be identified within the prescribed distance of the end of the runway (1); and
b. the disposition and relative performance of all aircraft are such that (1), under normal operation (1), or with the provision of an initial heading to the aircraft about to depart (1), ATS surveillance system separation will exist (1).
Term
What are the conditions under which horizontal radar separation may be reduced to 3 NM? (6 marks)
Definition
S1 - 3NM Conditions:
Aircraft are in communication with and under the control of either a TCU (1) or an associated control tower providing Class C or Class D services (1) and are:
a) within 100NM of an MSSR sensor (1); or
b) within 30NM of a radar sensor using (1):
     i) military high definition TAR; or (1)
     ii) primary data from a civil high definition TAR. (1)
Term
RAVN24 (IFR, PC9) is operating not above A030V outbound on the 050 VOR radial. ABC (IFR, BE58) is inbound on the same radial requesting descent from FL130. What is the maximum descent that can be assigned to ABC, including conditions if any, whilst still
Definition
A040 (1)
Term
RAVN24 (VFR, PC9) is maintaining A075 outbound on the 050 VOR radial. BCE (IFR, BE20) is inbound on the same radial requesting descent from FL130. What is the maximum descent that can be assigned to BCE, including conditions if any, whilst still providing
Definition
A080 (1). Traffic information to BCE unless impracticable (1).
Term
RAVN24 (SVFR due cloud, PC9) is maintaining A080 outbound on the 050 VOR radial. QLK2123 (IFR, DH8) is inbound on the same radial requesting descent from FL130. What is the maximum descent that can be assigned to QLK2123, including conditions if any, whil
Definition
A090 (1)
Term
RAVN24 (VFR, PC9) is maintaining A075 outbound on the 050 VOR radial. QLK2123 (IFR, DH8) is inbound on the same radial requesting descent from FL130. What is the maximum descent that can be assigned to QLK2123, including conditions if any, whilst still pr
Definition
A085 (1)
Term
RAVN24 (VFR, PC9) is maintaining A095 outbound on the 050 VOR radial. MAPL52 (IFR, F18) is inbound on the same radial and requests descent from FL130. What is the maximum descent that can be assigned to MAPL52, including reasons, whilst still providing vertical separation? QNH is 1012. (2)
Definition

Do not clear aircraft to cruise within the transition layer.

FL115 (1).

FL110 not available when QNH is less than 1013 (1).

Term
RAVN24 (SVFR due VIS, PC9) is maintaining A075 outbound on the 050 VOR radial. CDE (SVFR due VIS, BE20) is inbound on the same radial requesting descent from FL130. What is the maximum descent that can be assigned to CDE whilst still providing vertical separation? (1 mark)
Definition
A080 (1)
Term
RAVN24 (VFR, PC9) is maintaining A035 outbound on the 050 VOR radial. DEF (IFR, BE20) is inbound on the same radial requesting descent from FL130. Taking into account the TAF below for your airfield today, what is the maximum descent that can be assigned to DEF, including conditions if any, whilst still providing vertical separation? (Time now is 070547Z) (2 marks)
TAF YXXX 062237Z 0700/0806 21015G42KT 6000 HZ FEW030 BKN045
INTER 0702/0704 4000 TSRA BKN030CB
RMK FM070700 SEV TURB BLW 5000FT TILL 071100
Definition
A040 (1). Traffic to DEF if practicable. (1)
Term
RAVN24 (VFR, PC9) is maintaining A035 outbound on the 050 VOR radial. EFG (IFR, BE20) is inbound on the same radial requesting descent from FL130. Taking into account the TAF conditions confirmed by RAVN24 (see below), what is the maximum descent that can TAF YXXX 062237Z 0700/0806 21015G42KT 6000 HZ FEW030 BKN045 INTER 0702/0704 4000 TSRA BKN030CB RMK FM070700 SEV TURB BLW 5000FT TILL 071100
Definition
A055 (1)
Term
TROJ211 (VFR, C130) is maintaining A035 outbound on the 050 VOR radial. AR2 (IFR, BE20) is inbound on the same radial, maintaining A090. What is the maximum climb that can be assigned to TROJ211, including conditions if any, whilst still providing vertica
Definition
A080 (1)
Term
TROJ211 (IFR, C130) is maintaining FL130 outbound on the 050 VOR radial. RADR (IFR, 2 x F18) are inbound on the same radial, maintaining FL340. What is the maximum climb that can be assigned to TROJ211, including conditions if any, whilst still providing vertical separation? (All aircraft are RVSM approved.) (1 mark)
Definition
FL320 (1)
Term
STAL211 (IFR, C17) is maintaining FL130 outbound on the 050 VOR radial. QFA 123 (IFR, B747) is inbound on the same radial, maintaining FL340. What is the maximum climb that can be assigned to STAL211, including conditions if any, whilst still providing vertical separation? (Both aircraft are RVSM approved). (1 mark)
Definition
FL330 (1)
Term
STAL211 (IFR, C17) is maintaining FL130 outbound on the 050 VOR radial. QFA 123 (IFR, B747) is inbound on the same radial, maintaining FL340. What is the maximum climb that can be assigned to STAL211, including conditions if any, whilst still providing vertical separation? (only QFA123 is RVSM approved). (1 mark)
Definition
FL320 (1)
Term
QFA384 (RVSM approved, IFR, B747) is requesting climb from FL320 to FL410. This requested level conflicts with SIA231 (RVSM approved, IFR, B767) over flying at FL420. What is the highest level that can be assigned to QFA384, including conditions if any, whilst still providing vertical separation? (1 mark)
Definition
FL400 (1)
Term
To which aircraft, and at which altitudes, is the 3000 FT vertical separation standard applicable? (2 marks)
Definition
At all levels (1) when one or more aircraft is operating at supersonic speeds (1)
Term

What distance based wake turbulence separation is required in the following scenarios (assume all aircraft involved are operating under IFR)? (1 mark each)

a. Hawk (MTOW≈9100KG) following BBJ (MTOW≈77000KG)

b. PC9 (MTOW≈3200KG) following C17 (MTOW≈265000KG)

c. F/A-18 (MTOW≈24000KG) following C17 (MTOW≈265000KG)

d. A330 (MTOW≈230000KG) following C17 (MTOW≈265000KG)

e. C172 (MTOW≈1100KG) following Hawk (MTOW≈9100KG)

f. P3C (MTOW≈64000KG) following B757 (MTOW≈123000KG)

Definition

No wake turbulence separation necessary (1)

6NM (1)

5NM (1)

4NM (1)

No wake turbulence separation necessary (1)

5NM (1)

Term
How are aircraft grouped for wake turbulence purposes? (5 marks)
Definition
Wake turbulence separation minima is determined by grouping aircraft types according to the maximum certificated take–off weight and wake turbulence characteristics (1) as follows:
SUPER (H) or (J)
   A380, AN225 (1)
HEAVY (H)
   all other aircraft types of 136,000 KG or more (1)
MEDIUM (M)
   aircraft types less than 136,000 KG but more than 7,000 KG (1)
LIGHT (L)
   aircraft types of 7,000 KG or less (1)
Term
Except as specified in MATS 10.6.1.5, when shall wake turbulence separation minima be applied in controlled airspace? i.e. within what dimensions of an aircraft? (4 marks)
Definition

Except when specified in Clause 10.6.1.5, apply wake turbulence separation in all controlled airspace when an aircraft is following (1)

or will operate within 760 m laterally of the track of another aircraft (1)

at the same level (1)

or less than 1000 FT below

Term
What wake turbulence standard is required between a VFR C210 in flight following a VFR H60 in flight? State your reasons. When do you apply it for VFR aircraft? (5 marks)
Definition

None (1).

Wake turbulence separation is not required:

c. for VFR flights (1) except when required in accordance with 10.6.1.3;

Apply wake turbulence separation when a VFR aircraft is:

a) in flight and would operate within the wake turbulence envelope of a Super category aircraft; (1)

b) departing; (1) or

c) a Light aircraft during its landing run will cross the flight path of, or intersection of a crossing runway, behind a departing Heavy or Super aircraft that has rotated at or before the intersection;

Term
A wake turbulence caution shall be provided when opposite direction aircraft have passed using separation standards T7 a through d, and D8b, and the lighter category aircraft will enter the wake turbulence envelope of the heavier category aircraft, except when the heavier category aircraft is a medium firxed wing aircraft less than 25000kg MTOW. When else shall ATC issue a wake turbulence caution? (5 marks)
Definition
Issue a wake turbulence caution in any of the following circumstances:
a. less than the applicable wake turbulence separation minima may exist (1);
b. the applied wake turbulence separation minima may be infringed (1);
c. the pilot initiates a waiver (1);
d. when wake turbulence separation is not provided in circumstances described in 10.6.1.5 c) and e) and you consider that wake turbulence may have an adverse affect on the aircraft (1).
or
f. To an air taxiing helicopter that will operate in the wake turbulence envelope of
a heavier category aircraft.(1)
Term
Under what circumstances may the responsibility for visual separation be assigned to a pilot? (5 marks)
Definition
You may only assign responsibility for visual separation to a pilot when:
a. aircraft are operating at or below 10 000 FT (1); and
b. the pilot of one aircraft:
      1. reports sighting the other aircraft (1); and
      2. accepts responsibility to maintain visual separation with (1), pass behind (1) or follow (1) that aircraft.
Term
What shall be considered before assigning responsibility for visual separation to a pilot? (5 marks)
Definition
Before assigning responsibility for visual separation to a pilot, consider the following:
a. aircraft performance characteristics, particularly in relation to faster following aircraft and closure rates (1)
b. position of the aircraft relative to each other (1)
c. projected flight paths of the aircraft (1)
d. possibility of an ACAS RA due to closer proximity of operation (1); and
e. known weather conditions (1)
Term
When an aircraft has been instructed to maintain separation from or pass behind an IFR aircraft, what information and advice shall be given to the IFR aircraft? (2 marks)
Definition
Issue traffic information to the IFR aircraft (1), including advice of assignment of responsibility for separation to other aircraft (1).
Term
Define the basis for separating the following formation types from other airspace users: (10 marks) a. Close formation (2 marks) b. Standard formation (4 marks) c. Military tactical formation (2 marks) d. In-trail formation (2 marks)
Definition

Close Formation - when aircraft are in Close Formation, they are considered to be one aircraft (1). Separation between this type of formation and other airspace users shall be based on the lead aircraft (1).

Standard formation – when aircraft are in standard formation, they may be manoeuvred up to 1 NM either side of, co-altitude with and up to 1 NM behind the lead aircraft. S

eparation between this type of formation and other airspace users is based on the outer edges of these limits;

Military tactical formation - when aircraft are in military tactical formation, they occupy an airspace block defined in the flight notification (1).

Base separation between military tactical formations and other airspace users on the outer limits of the outer limits of the airspace block (1)

In-trail formation - when aircraft are in an in-trail formation, individual aircraft use aircraft radar and/or TACAN to maintain contact and spacing with the aircraft ahead (1). Separation between this type of formation and other airspace users is based on the first and last aircraft in the trail.

Term
A civilian Spitfire and Mustang are arriving at your airfield as an in-company flight. Who is responsible for separation between the aircraft during the transit to your airfield? Who is responsible for runway separation between the aircraft? (2 marks)
Definition

Transit to airfield - Pilots or aircraft (1)

Runway separation - ATC or tower (1)

Term
When vectoring an aircraft for final approach using ground based navigation aids, what are the maximum intercept angles? What shall the pilot be advised and informed of? When should the aircraft be established on the final approach track? (7 marks)
Definition
When vectoring an aircraft for final approach using ground based navigation aids:
a. provide an intercept angle with the final approach track of 45 degrees or less (1)
b. advise the range from the aerodrome (1) or position with reference to the final approach point (1)
c. inform that the vector is to intercept the approach (1)
d. provide a clearance for the approach, when clearance has been authorised (1)
e. instruct the pilot to report when established on final approach track (1)
f. ensure that the aircraft is established on final approach track at least 2 NM before commencement of final approach (1).
Term
You have assigned ALDN509 a vector to intercept TACAN final and cleared the aircraft for the approach. When ALDN509 reports established, what is your response to include? (2 marks)
Definition

When a pilot reports established on final approach track:

a. advise the pilot of the aircraft’s distance to touchdown; (1) and

b. instruct the pilot to transfer to the tower frequency. (1)"

Term
What should a controller do when vectoring an aircraft through the final approach track? (1 mark)
Definition
Advise the pilot the reason for the vector, (1) if assigning a vector that will take the aircraft through the final approach track.
Term
Under what conditions may a level restriction be assigned to an aircraft on an instrument approach? (5 marks)
Definition
You may instruct an aircraft to track via an instrument approach procedure and a level restriction assigned if the aircraft is:
a. in VMC (1) conducting instrument approach training (1); or
b. a military aircraft (1) conducting a:
      1. non-precision approach procedure (1); or
      2. precision approach procedure, provided clearance for the approach is issued in sufficient time for the aircraft to maintain the descent profile for the procedure being flown (1).
Term
When may an IFR C130 be authorised to carry out a visual approach by day? (4 marks)
Definition
When a flight...is within 30 NM of an aerodrome (1), a visual approach may be authorised by day or night to:
a. (not applicable)
b. an IFR flight when:
      1. the pilot has established and can continue flight to the aerodrome (1) with continuous visual reference to the ground or water (1); and
      2. the visibility along the flight path is not less than 5000 M (or by day, the aerodrome is in sight) (1).
Term
When may a VFR C172 be authorised to carry out a visual approach by night? (1 mark)
Definition
When a flight...is within 30 NM of an aerodrome (1)
Term
When may RCHE582 (USAF C17) be authorised to carry out a visual approach by night? (7 marks)
Definition

When a flight...is within 30 NM of an aerodrome (1), a visual approach may be authorised by day or night to:
a. (not applicable)
b. an IFR flight when:
      1. the pilot has established and can continue flight to the aerodrome (1) with continuous visual reference to the ground or water (1); and
      2. the visibility along the flight path is not less than 5000 M (1).

In addition to the requirements of Clause 11.1.11.1, with the exception of Australian and New Zealand operators.......only assign Super or Heavy jet aircraft a visual approach when:
a. specifically requested by the pilot (1) and the pilot has reported the landing runway in sight (1); or
b. the straight-in approach aid is unserviceable. (1)

Term
How can a level restriction be issued to an aircraft cleared for a visual approach? (1 mark)
Definition
Do not assign a level restriction to aircraft cleared for a visual approach. (1)
Term
What phraseology shall Approach use to advise Tower when a departing aircraft is required to assume a heading following take-off: a. for VFR flights by day or IFR flights not departing via a SID. (1 mark) b. for aircraft departing via a Radar SID. (1 mark)
Definition

"For VFR flights by day or for IFR flights by day in VMC and not departing via a SID, use phraseology: “RUNWAY HEADING VISUAL or RIGHT/LEFT (degrees) VISUAL” (1)"

 

For aircraft departing via a RADAR SID a three digit numerical radar heading is to be coordinated, using the phraseology: “HEADING/ RIGHT / LEFT (degrees)” (1)"

Term
When may a visual departure be issued in lieu of a SID? (5 marks)
Definition

You may issue a visual departure in lieu of a SID: a. by day (1);

b. in VMC (1); and

c. provided that the cloud base is such that the pilot can maintain flight in VMC (1) below the MVA (ATS surveillance system environment) or MSA/LSALT (procedural environment).

Term
You receive the following transmission from STAL23, an IFR C17 that is taxiing for a NAVEX using NVGs, “request cancel SID, depart via tracking instructions”. Can you approve this request? Who is responsible for terrain clearance if STAL23 departs via tra
Definition

Yes (1) Specify tracking instructions when requested by Australian military aircraft.

 

In accepting the clearance, the aircraft captain (1) accepts the responsibility for terrain clearance until passing MVA or LSALT.

Term
When shall a pilot advise ATC of a minimum fuel state? (2 marks)
Definition
A pilot-in-command shall advise ATC of a minimum fuel state by declaring MINIMUM FUEL when, having committed to land at a specific aerodrome (1) the pilot calculates that any change to the existing clearance to that aerodrome may result in landing with less than planned fixed fuel reserve (1).
Term
When should a departing or arriving military formation advise its formation type to the appropriate controller? (2 marks)
Definition
Formation leaders shall specify the formation type on first contact with Approach/Departures when outbound from an aerodrome (1), or the first ATC element contacted when inbound to an aerodrome (1).
Term
In what order shall departure instructions be issued? (8 marks)
Definition
Issue departure instructions in the following order:
a. callsign (1);
b. heading or tracking instructions (1), including turn requirements, except that a turn requirement may be omitted from the coordination where (1):
      1. already specified in SID instructions (1); or
      2. the heading issued for the Radar SID is within 5 degrees of the runway bearing (1); or
      3. the departure track for non-SID aircraft is within 5 degrees of the runway bearing (1); and
c. altitude restrictions (1) or the word UNRESTRICTED if there is no altitude restriction (UNRESTRICTED is not transmitted to the aircraft) (1).
Term
VIPR235 is in IMC under vectors. VIPR235 squawks 7600 and transmits a PAN PAN prefixed with “transmitting blind”. What actions do you expect VIPR235 to carry out? (3 marks)
Definition

"1. climb to MSA/LSALT, and, (1)

2. if being vectored, maintain last assigned vector for two minutes (1), then

3. proceed in accordance with the latest ATC route clearance acknowledged (1)."

Term
MAGPIE1 is holding in IMC. MAGPIE1 squawks 7600 and transmits a PAN PAN prefixed with “transmitting blind”. What actions do you expect MAGPIE1 to carry out? (2 marks)
Definition
"a. fly one more complete holding pattern (1), then b. proceed in accordance with the latest ATC route clearance acknowledged (1)."
Term
What are the five critical initial actions with respect to In Flight Emergency Response? (5 marks)
Definition
Acknowledge (1), Assess (1), Separate (1), Coordinate (1), Phase (1).
Term
RAVN24 (VFR, PC9) is maintaining FL115 outbound on the 050 VOR radial. AR3 (IFR, BE20) is inbound on the same radial requesting descent from FL130. What is the maximum descent that can be assigned to AR3, including conditions if any, whilst still providing vertical separation? (1 mark)
Definition
FL125 (1)
Term
What are the conditions under which horizontal radar separation may be reduced to 3 NM? (6 marks)
Definition
S1 - 3NM Conditions:
Aircraft are in communication with and under the control of either a TCU (1) or an associated control tower providing Class C or Class D services (1) and are:
a) within 100NM of an MSSR sensor (1); or
b) within 30NM of a radar sensor using (1):
     i) military high definition TAR; or (1)
     ii) primary data from a civil high definition TAR. (1)
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