Military Transport
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 3
Communication Breakdown; Situational Awareness
ATC Issue All Types; Conflict NMAC; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Flight Crew Requested ATC Assistance / Clarification; Flight Crew Returned To Clearance; Flight Crew Took Evasive Action
Human Factors; Procedure
Aircraft X was under radar advisories. Aircraft X was issued VFR traffic at his altitude south bound; and told their current heading they would go behind the traffic. I then told them if they turned 15 degrees to the right that they would definitely go behind. Aircraft X acknowledged with looking for traffic. I was then up for break; and during the relief briefing Aircraft X told me that traffic had come within 20 feet of him. That is when I noticed Aircraft X had turned left and reversed course back around into the traffic. I then reported the event to the OM.I should have re issued the traffic again to make sure they saw them and/or given a control instruction instead of a suggested heading.
JAX TRACON Controller reported of issuing a turn to an aircraft to the right to go behind traffic. During the relief briefing; pilot reported the traffic came within 20 feet of the aircraft. Reporter said aircraft turned left instead of right.