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Pdk controller described a TCAS RA event between an IFR [aircraft] inbound and issued traffic; the reporter noted the traffic did not appear to be a factor.
| Attributes | |
| ACN | 932376 |
| Time | |
| Date | 201102 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | PDK.Airport |
| State Reference | GA |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Super King Air 350 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Final Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Person 1 | |
| Function | Local |
| Qualification | Air Traffic Control Fully Certified |
| Events | |
| Anomaly | Conflict NMAC |
Narrative:
Aircraft X initially called in from approximately 10 NM northeast of pdk at 3;900 ft. I observed pertinent traffic on the racd and immediately responded to his initial call issuing a traffic advisory of an aircraft 11 to 12 o'clock; 3 miles; east-southeast-bound at 3;400 ft indicated. Aircraft X reported looking for traffic. In my judgment at the time; the traffic appeared extremely unlikely to become a factor and I shifted my focus back to operations on the runways. I heard conflict alert (ca) from the racd and looked up; observing aircraft X in close proximity to the previously called target. Aircraft X reported responding to an RA. I advised that on the radar; the previously called traffic appeared 3/4 miles south of his position and he clarified that the traffic had just passed 400 ft below from his 12 o'clock position. Recommendation; traffic most likely should have been issued prior to aircraft X being switched to my frequency.
Original NASA ASRS Text
Title: PDK Controller described a TCAS RA event between an IFR [aircraft] inbound and issued traffic; the reporter noted the traffic did not appear to be a factor.
Narrative: Aircraft X initially called in from approximately 10 NM northeast of PDK at 3;900 FT. I observed pertinent traffic on the RACD and immediately responded to his initial call issuing a traffic advisory of an aircraft 11 to 12 o'clock; 3 miles; east-southeast-bound at 3;400 FT indicated. Aircraft X reported looking for traffic. In my judgment at the time; the traffic appeared extremely unlikely to become a factor and I shifted my focus back to operations on the runways. I heard conflict alert (CA) from the RACD and looked up; observing aircraft X in close proximity to the previously called target. Aircraft X reported responding to an RA. I advised that on the RADAR; the previously called traffic appeared 3/4 miles south of his position and he clarified that the traffic had just passed 400 FT below from his 12 o'clock position. Recommendation; traffic most likely should have been issued prior to aircraft X being switched to my frequency.
Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.