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Approach controller in the process of being relieved at his sector did not detect the potential conflict less than standard separation occurring in his sector until separation was lost. Traffic volume was building rapidly and sector splits were also taking place. Supervisor controller was at the watch desk and did not see the incident either.
| Attributes | |
| ACN | 368654 |
| Time | |
| Date | 199704 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : gpt |
| State Reference | MS |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : gpt |
| Operator | other |
| Make Model Name | Hercules (C-130) |
| Operating Under FAR Part | other : other |
| Flight Phase | other |
| Route In Use | enroute airway : gpt |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Bonanza 36 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| ASRS Report | 368654 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 3000 vertical : 300 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
The C130 was in holding at gpt VOR. The bonanza was on V20 swbound. Both aircraft were at 4000 ft. Traffic was building rapidly. There was only 1 radar sector open. Several aircraft were on approachs to gpt, several more were being vectored to the approach. There were several overflts IFR and VFR. I needed to open another sector and proceeded to do so. Another controller opened up another sector to alleviate some of the pressure. At the same time the supervisor told another controller to relieve me. The supervisor at the time was at the watch desk with another supervisor. During all this confusion the 2 aircraft in question got too close together. Splitting the radar position earlier and closer supervision of current and anticipated traffic could have prevented this from happening.
Original NASA ASRS Text
Title: APCH CTLR IN THE PROCESS OF BEING RELIEVED AT HIS SECTOR DID NOT DETECT THE POTENTIAL CONFLICT LTSS OCCURRING IN HIS SECTOR UNTIL SEPARATION WAS LOST. TFC VOLUME WAS BUILDING RAPIDLY AND SECTOR SPLITS WERE ALSO TAKING PLACE. SUPVR CTLR WAS AT THE WATCH DESK AND DID NOT SEE THE INCIDENT EITHER.
Narrative: THE C130 WAS IN HOLDING AT GPT VOR. THE BONANZA WAS ON V20 SWBOUND. BOTH ACFT WERE AT 4000 FT. TFC WAS BUILDING RAPIDLY. THERE WAS ONLY 1 RADAR SECTOR OPEN. SEVERAL ACFT WERE ON APCHS TO GPT, SEVERAL MORE WERE BEING VECTORED TO THE APCH. THERE WERE SEVERAL OVERFLTS IFR AND VFR. I NEEDED TO OPEN ANOTHER SECTOR AND PROCEEDED TO DO SO. ANOTHER CTLR OPENED UP ANOTHER SECTOR TO ALLEVIATE SOME OF THE PRESSURE. AT THE SAME TIME THE SUPVR TOLD ANOTHER CTLR TO RELIEVE ME. THE SUPVR AT THE TIME WAS AT THE WATCH DESK WITH ANOTHER SUPVR. DURING ALL THIS CONFUSION THE 2 ACFT IN QUESTION GOT TOO CLOSE TOGETHER. SPLITTING THE RADAR POS EARLIER AND CLOSER SUPERVISION OF CURRENT AND ANTICIPATED TFC COULD HAVE PREVENTED THIS FROM HAPPENING.
Data retrieved from NASA's ASRS site as of July 2007 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.