4. SSR Identification - ATM1 Flashcards

1
Q

Define Radar Contact

A

The situation which exists when the radar position symbol of a particular aircraft is seen and identified on a situation display.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Define Identification

A

The act of correlating a particular position indication with a specific aircraft target by means of laid down procedures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Define Validation

A

Validation is the task of checking that the correct code has been selected by the pilot and is shown on the situation display.

It is possible to achieve identification and validation simultaneously.

IF YOU ALLOCATE A SQUAWK YOU MUST VALIDATE AND VERIFY IT!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Define correlation

A

By means of a radar processor, SSR data may be correlated with stored flight plan data, enabling a code/callsign conversion to take place.

Unless correct validation procedures are carried out, the resulting correlation could give rise to incorrect data being displayed.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Define Verification

A

A check to confirm that the aircrafts Mode C read out is accurate within agreed parameters.

There are strict guidelines concerning the use of Mode C data which vary according to whether the readout is verified or not.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What SSR mode can be used for identification?

A

Mode A (SSR data) can be used to identify aircraft.

Following identification, outside controlled airspace, the controller shall inform the pilot that his aircraft has been identified.

It is no longer required to pass a position to the pilot unless the controller considers it necessary.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

When using SSR and/or MLAT is used, how may an AC be identified? (5)

A
  • Recognition of the aircraft identification in an SSR and/or MLAT label; (nb #1)
  • Direct recognition of the aircraft identification of a Mode S-equipped aircraft in an SSR and/or MLAT label
  • By transfer of identification (transfer of control)
  • Observation of compliance with an instruction to set a specific code;
  • Observation of compliance with an instruction to squawk IDENT.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is validation?

A

Instruct the AC to squawk assigned code and match them on situation display.
Instruct AC to “squawk ident” and check code matches.

Matching a previous PSR target with assigned code for the flight

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What if you are unable to validate?

A

Instruct pilot to reset squawk code.

If an error persists, instruct pilot to squawk A0000.
If an error still exists, instruct pilot to switch off transponder.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

When is a Mode A code deemed valid?

A

When the code set can be recognised by the Code Assignment Plan to have been assigned by an ATC unit capable of validating the code providing the code has not been notified as being corrupt.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

When is a Mode C code deemed valid?

A

Mode C can be assumed to have been verified if associated with a deemed validated Mode A code.

Verification may be achieved, if necessary, with the assistance of another ATSU.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

If there’s an error with validating Mode C?

A

Request the pilot to “check altimeter setting and confirm level”

If still an error:
“Stop Squawk Altitude; or “Stop squawk Altitude, wrong indication” “Squawk 0000”– to indicate a data error (if independent switching of Mode C is not possible).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Condense
Transfer of identification

A
  • Designation by automated means, provided that
    only one position indication is indicated with no
    possible doubt of correct identification;
  • Notification of the aircraft’s discrete SSR code or
    aircraft address (telling the next unit the SSR)
  • Notification that the aircraft is SSR Mode S / ADS-
    B-equipped with an aircraft identification feature
    when SSR Mode S coverage is available

d) Notification that the aircraft is ADS-B-equipped
with an aircraft identification feature when
compatible ADS-B coverage is available;

e) Direct designation (pointing with the finger) of
the position indication, if the two situation
displays are adjacent or if a common
“conference” type of situation display is used;

-Designation of the position indication by reference
to bearing and distance from a geographical
position or nav facility, together with the track of
the observed position indication if the route of the
aircraft is not known to both controllers; (Radar handover - Over phone)
- a.

  • Instructing an aircraft to change SSR code by
    the transferring controller and the
    observation of the change by the accepting
    controller; or
  • Issuance of an instruction to the aircraft by
    the transferring controller to ‘squawk IDENT’
    and observation of this response by the
    accepting controller.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

In what form shall position information be passed? (5)

A
  • As a well-known geographical position;
  • Magnetic track and distance to a significant point, an en-route navigation aid, or an approach aid;
  • Direction (using points of the compass) and distance from a known position;
  • Distance to touchdown, if the aircraft is on final approach
  • Distance and direction from the centre line of an ATS route.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly