SEP 7.5 CONTROLLER INTERVENTION BUFFER

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SEP 7.5 CONTROLLER INTERVENTION BUFFER

A knowledge of the allowance made (if any) for controller intervention in the formulation of a particular separation standard logically provides the basis by which the applicability of that standard to any given airspace and ATC system may be assessed. New separation standards should specify comprehensively what performance assumptions have been made about the time required for the controller to recognise and intervene in the collision risk assessment.


IFATCA Policy is:

The Controller Intervention Buffer be defined as:

The time required for the Air Traffic Controller to intervene ensuring that a collision would be averted in the event that a separation standard being applied breaks down. This will include an allowance:

  • to recognize the ‘blunder’;
  • to formulate a solution;
  • to convey instructions to the pilot;
  • for the pilot to react and cause the aircraft to achieve the required change of trajectory.

A Controller Intervention Buffer should be included in the development and specification of any separation minima where controller intervention is used as a risk mitigator.


See: WP 82 – Geneva 2001

IFATCA Policy is:

ATC systems should be developed with the capability to monitor relevant Controller Intervention Capability (CIC) parameters and warn controllers when they fall outside the values used in determining separation standards in use so that alternative standards can be applied.


See: WP 87 – Cancun 2002

See also: WP 84 – Buenos Aires 2003


 

Last Update: September 29, 2020  

November 3, 2019   281   Jean-Francois Lepage    SEP    

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