ATS Surveillance Systems 3 Flashcards
As listed in the AIP, state what the following SSR codes signify:
7500 - 7600 - 7700 - 0000 - 0002 - 0020 - 0021 - 0022 - 0023 - 0024 - 0030 - 0031 - 0032 - 0033 - 0034 - 0035 - 0037 - 0040 - 1177 - 2000 - 7000 - 7001 - 7002 - 7003 - 7004 - 7005 - 7006 - 7007 - 7010 -
7500 - Hijacking
7600 - Radio Failure
7700 - Emergency
0000 - SSR data unreliable
0002 - Ground Transponder Testing
0020 - Air Ambulance Helicopter Emergency/Medivac
0021 - Fixed-wing aircraft (receiving service from a ship)
0022 - Helicopter (receiving service from a ship)
0023 - Aircraft engaged in actual SAR Operations
0024 - Radar Flight Evaluation/Calibration
0030 - FIR Lost
0031 - An aircraft receiving a radar service from D&D centre
0032 - Aircraft engaged in police air support operations
0033 - Aircraft Paradropping
0034 - Antenna trailing/target towing
0035 - Selected Flights - Helicopters
0037 - Royal Flights - Helicopters
0040 - Civil Helicopters North Sea
1177 - London Area Control Centre Flight Information Service (LACC FIS)
2000 - Aircraft from non-SSR environment
7000 - Conspicuity Code
7001 - Military fixed-wing low level conspicuity/climbout
7002 - Danger Areas General
7003 - Red Arrows Transit/Display
7004 - Conspicuity Aerobatics and Display
7005 - High Energy Manoeuvres
7006 - Autonomous operations with TRAs
7007 - Open Skies Observation Aircraft
7010 - Operating in Aerodrome Traffic Pattern
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:
If only PSR is available, a controller may transfer the identity of an aircraft to another controller by any of the following methods:
1) Direct designation (pointing) of the Position Indication where two situation displays are adjacent or a conference type of 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
2) 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 aircraft and the reference point must not exceed:
a) 30 miles, if the aircraft is flying along a published ATS route or direction is given as a bearing in degrees
b) 15 miles in other circumstances
3) 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.
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?
Except as described as below, a pilot shall be advised whenever identification is lost.
When using SSR, controllers may be temporarily unable to read the data blocks associated with aircraft due to overlapping or garbling e.g. in holding areas. Although this constitutes a loss of identification, the pilot need not be advised that identification has been lost if the controller anticipates that identification will be re-established immediately the overlapping or garbling ceases.
As stated in MATS 1, describe the circumstances when pilots should, and may, be informed of their position.
Pilots should be informed of their position in the following circumstances:
1) Following identification of the aircraft using the Turn method
2) When the pilot Requests the information
3) When the aircraft is flying off the Correct Track
4) When an aircraft estimate differs significantly from the controller’s Estimate based on ATS surveillance system observation
5) When the pilot is instructed to resume his own navigation following Vectoring, if considered necessary by the controller
Additionally, controllers may pass position information to aircraft whenever they consider it necessary.
VECTR
As described in MATS 1, detail how position information shall be passed to aircraft
Position information shall be passed in one of the following forms:
1) A well-known Geographical position, Bearing (using points of the compass) and distance from a known position
2) 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
3) Latitude and Longitude (by specific units only when authorised in MATS Part 2) or
4) Distance from touchdown if the aircraft is on final approach
GBML&LDB
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