Air Traffic Surveillance Service Flashcards
What are the functions of an ATS surveillance system?
- Separation of arriving, departing and enroute traffic
- Vectoring
- Position info to assist in the navigation of AC
- Monitoring traffic to provide info to the procedural controller
- Assistance to AC crossing CAS
Functions of the ATS surveillance system, AC identified or not
- Info on the position of AC likely to constitute a hazard
- Avoiding action
- Info about observed wx for pilots and other controllers
- Assistance to AC in emergency
Functions of Approach ATS Surveillance System
- SRAs
- Vectoring/sequencing to a pilot interpreted final approach aid
- Flightpath monitoring of approaches utilising a pilot interpreted final approach aid
- ATS surveillance services to departing AC
- ATS surveillance services to a transit AC, through an area which approach radar control is responsible
When is a pilot to be advised if a service commences, terminates or changes?
- Outside CAS
- Entering CAS
- Leaving CAS
- Changing from IFR to VFR, or VFR to IFR within class E
- VFR entering class B-D from class E
- VFR leaving class B-D to enter class E
Definition of Vectoring
Providing navigational guidance to AC in the form of specific headings based in the use of an ATS surveillance system
What are controller’s responsibilities when vectoring AC?
- A controller may instruct an AC to turn in any direction, but when avoiding unknown AC, RoA should be observed of practicable
- AC flying outside CAS are not obliged to follow ATC instructions
- Controller can expect that AC under DS or TS will follow instructions
What are the exceptions to vectoring AC outside of the vertical and lateral limits of CAS?
- Emergency situation
- Avoiding severe wx, which will be explained to the pilot
- When requested by the pilot
At what distance from the edge of CAS should AC not be vectored within?
2 miles
What needs to considered when vectoring an AC to final approach?
- Pilot advised that AC will be vectored to intercept FA
- Heading or series of headings given and calculated to close with the FA
- AC should be vectored so as to be established on the FAT at not less than 5 miles from TD
- Controllers shall not use altitudes below those specified on Unit SMAC
Controller’s responsibility and terrain clearance
- Controllers shall ensure that IFR in receipt of RCS are provided with adequate TC
- Controllers have no responsibility fro TC of SVFR and VFR AC within CAS which accept vectors
Disadvantages of vectoring
- Affected by prevailing winds, more significant at higher levels
- Affected by AC speed and pilot reaction time
- Pilot may lose SA as taken off planned track
- Increased RT work load
- Inefficient use of AS
What is Flight Path Monitoring?
The use of an ATS surveillance system for the purpose of providing AC with info and advice relative to significant deviations from nominal flight path, including from the terms of their ATC clearance
Termination of ATS surveillance service
AC should be informed immediately when, for any reason, the service is interrupted or terminated
