Date: 201504
Local time of day: 1201-1800
Location: A80.TRACON, GA
Weather elements / visibility: Thunderstorm; Windshear
Light: Daylight
Aircraft: Large Transport; Low Wing; 2 Turbojet Eng
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Final Approach
Airspace: Class B ATL
ATC / advisory: TRACON A80
Reporter organization: Government
Reporter function: Approach
Reporter qualification: Air Traffic Control Fully Certified
Human factors: Troubleshooting; Situational Awareness; Distraction; Confusion; Workload
Anomaly: ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Detector: Person Air Traffic Control
When detected: In-flight
Result: Air Traffic Control Separated Traffic
Contributing factors: ATC Equipment / Nav Facility / Buildings; Human Factors; Procedure
Primary problem: ATC Equipment / Nav Facility / Buildings

Narrative: A line of level 3 to 4 weather moved west to east across the airport.  A80 chose to remain in triple simultaneous approaches based on information management had indicating there would be no wind shear associated with the weather.  That often changes at ground level as weather hits the airport; as it did in this case.  There were multiple wind shear alerts and 7 to 8 pull outs/go arounds between the three arrival runways during a short time span; including the one mentioned above. The controllers working the monitor positions are required to vector the pull out aircraft using the RACD (Remote Arts Color Display) overhead displays; yet they remain responsible for aircraft continuing to check in on the finals; which requires the simultaneous use of the PRM (Precision Runway Monitor) displays and the RACD displays.  It is very physically challenging to do both.  When there are multiple aircraft coming off the finals; this creates an unsafe situation; since it is very distracting for the controllers to have their attention diverted in such a way because it compromises their ability to perform their primary duties. In the case of Aircraft X; because it was so close to the airport when he said he was pulling himself out; [it] was unable to be tracked using the RACD because the track was in coasting status for 10 to 15 seconds creating an unsafe situation. Luckily; I could still see a target on the PRM display; but that is not the display I am to use to vector the aircraft back into the pattern.Cease and desist the simultaneous use of two different displays during triple simultaneous approaches.  With the emergence of fusion technology; our facility should be able to use regular CARTS (Common ARTS) or STARS (Standard Terminal Automation Replacement System) displays.  The whole weather issue during triple simultaneous approaches is something that constantly keeps repeating itself at this facility and we can't seem to get a good grip on it.  Situations like the one above put an inordinate amount of stress on the controllers involved.




Synopsis: An Atlanta TRACON (A80) Controller reports of having to use two different radar systems at one position to monitor traffic safely. The reporter states that it is stressful on all of the controllers involved.