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ATS surveillance system communication

AIP GEN 3.4


Circumstance Phraseology
KEY

Pilot transmission

Unique to Australia (ICAO Silent)

Military specific

1 Communications (a) [If] radar contact lost (instructions)
(b) If no transmissions received for (number) minutes (or seconds) (instructions)
(c) Reply not received (instructions)
If loss of communications is suspected (d) If you read manoeuvre instructions or squawk (code or ident)
(e) (Manoeuvre or squawk) observed, position (position of aircraft), will continue to pass instructions
2 Aircraft directional indicator failure
When notified by pilot (a) Compass failure acknowledged, radar service will continue using no-compass procedures, confirm familiar
When suspected by ATC (b) Confirm heading
If heading response appears at variance with the track of the radar return (c) Suspect your compass has failed, radar service will continue using no-compass procedures, confirm familiar
In case of unreliable directional instruments on board aircraft (d) Make all turns rate one [(or rate half or (number) degrees per second)] execute instructions immediately upon receipt
(e) Turn left (or right) now
(f) Stop turn now

ATS surveillance system manoeuvres AIP GEN 3.4

Circumstance Phraseology
KEY

Pilot transmission

Unique to Australia (ICAO Silent)

Military specific

1 General manoeuvres (a) Leave (significant point) heading (three digits) [inbound] [at (time)]
For avoiding action (b) Continue heading (three digits)
(c) Continue present heading
When instructing an aircraft to turn 180 ̊ or more and in order to emphasise the direction of turn (d) Fly heading (three digits)
(e) Turn left (or right) (number) degrees (or heading (three digits) [reason])
When necessary to specify a reason for a manoeuvre, the following phraseologies should be used (f) Orbit left (or right) [reason]
(g) Climb (or descend) to (level) visual
(h) Turn left (or right) (number) degrees (or heading (three digits)) [climb (or descend) to (level)] visual
(i) Stop turn heading (three digits)
(j) Turn left (or right) – I say again – left (or right) heading (three digits) [reason]:
(i) due traffic
(ii) for spacing
(iii) for delay
(iv) for downwind (or base, or final)
2 Aircraft vectoring by ATS surveillance services (a) Request vectors [to (or from) (aid, location or reason)]
(b) Do you want vectors?
To transfer responsibility to the pilot for navigation and terrain clearance (as applicable) on termination of vectoring (c) Resume own navigation (position of aircraft)(specific instructions)

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