The controller must use the most accurate information available to initiate, monitor, and maintain separation.
Apply the following procedures in airspace where conflict probe is being utilized as a decision support tool:
Conflict Probe Results.
(a) Controllers must assume that the conflict probe separation calculations are accurate.
(b) Unless otherwise prescribed in subparagraph a3, controllers must utilize the results from conflict
probe to initiate and maintain the prescribed separation minima.
(a) When a controller is alerted to a conflict, which will occur in his/her sector, take the appropriate
action to resolve the conflict.
(b) The controller responsible for resolving a conflict must evaluate the alert and take appropriate
action as early as practical, in accordance with duty priorities, alert priority, and operational
(c) Unless otherwise specified in facility directives, the controller must take immediate action to
resolve any “red” conflicts.
Overriding Conflict Probe.
(a) Controllers must not override conflict probe except for the following situations:
(1) The application of a separation standard not recognized by conflict probe listed in subparagraph
a8(a), or as identified by facility directive.
(2) When action has been taken to resolve the identified conflict and separation has been ensured, or
(3) Control responsibility has been delegated to another sector or facility, or
(4) Other situations as specified in facility directives.
(b) Controllers must continue to ensure that separation is maintained until the overridden conflict is
Use of Probe when Issuing Clearances. Utilize conflict probe results when issuing a clearance to ensure that
any potential conflict has been given thorough consideration.
Use of Probe when Accepting Manual Transfers. Prior to manually accepting an aircraft transfer from an
external facility ensure that the coordinated flight profile is accurately entered, conflict probe initiated
and, if necessary, action is taken to resolve any potential conflicts.
Trial Probe. The controller can utilize trial probe to assess whether there are any potential conflicts with a
proposed clearance or when performing manual coordination.
NOTE: Once initiated, trial probe does not take into account any changes made to the proposed profile or to
any other flight profile in the system. It is an assessment by conflict probe of the current situation at
the time the controller enters the trial probe. A trial probe does not alleviate the controller from
performing a conflict probe when issuing a clearance or accepting a transfer.
System Unable to Perform Conflict Probe for a Specific Aircraft.
(a) If a flight's profile becomes corrupted, conflict probe may not be able to correctly monitor
separation for that flight. Take the necessary steps to correct an aircraft's flight plan when conflict
probe could not be performed.
(b) In addition, after verifying flight plan data accuracy, utilize other decision support tools to
establish and maintain the appropriate separation minima until such time that conflict probe can be
Conflict Probe Limitations.
(a) Conflict Probe does not support the following separation minima:
(4) Subparagraph 8-4-3b - Reduction of Route Protected Airspace, at and above FL 240.
(5) Subparagraph 8-4-4a1 - Same NAVAID: VOR/VORTAC/TACAN.
(6) Subparagraph 8-4-4a2 - Same NAVAID: NDB.
(7) Subparagraph 8-4-4c - Dead Reckoning.
(8) Paragraph 8-5-4 - Same Direction.
(9) Paragraph 8-8-5 - VFR Climb and Descent.
Additional Decision Support Tools: These support tools include: range/bearing, time of passing, intercept angle,
the aircraft situation display (ASD) and electronic flight data.
The results provided by these additional decision support/controller tools can be used by the controller for
maintaining situational awareness and monitoring flight profile information, and for establishing and
maintaining separation standards not supported by probe, or when probe is unavailable.
Under no circumstances must the controller utilize any of the additional decision support tools to override
probe results when the applicable separation standard is supported by probe and none of the other conditions
for overriding probe apply.