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) |