IFATCA Policy is:

The Short Term Conflict Alert (STCA) system should only alert the controllers at the specific radar sector concerned, and not at positions where controllers are not involved in the alert.

The methods and procedures for the use of STCA should be clearly defined before the introduction of the equipment.

Unless STCA provides a definitive course of action for the controller to follow, it cannot be accepted that the fitting of an STCA device will necessarily increase the controller’s legal liability should an incident occur.