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Approach controller turned two aircraft to maintain separation, but was too late and less than standard separation occurred.
| Attributes | |
| ACN | 167718 |
| Time | |
| Date | 199101 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ric |
| State Reference | VA |
| Altitude | msl bound lower : 9000 msl bound upper : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : lax |
| Operator | general aviation : personal |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | cruise other |
| Route In Use | enroute airway : ric |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 11 |
| ASRS Report | 167718 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 14000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
While I was working radar position I noticed a potential conflict about to occur between 2 aircraft at the same altitude. I immediately turned both aircraft and issued traffic. The small transport X reported the other aircraft Y in sight at which time I told him to maintain visibility sep.
Original NASA ASRS Text
Title: APCH CTLR TURNED TWO ACFT TO MAINTAIN SEPARATION, BUT WAS TOO LATE AND LESS THAN STANDARD SEPARATION OCCURRED.
Narrative: WHILE I WAS WORKING RADAR POS I NOTICED A POTENTIAL CONFLICT ABOUT TO OCCUR BTWN 2 ACFT AT THE SAME ALT. I IMMEDIATELY TURNED BOTH ACFT AND ISSUED TFC. THE SMT X RPTED THE OTHER ACFT Y IN SIGHT AT WHICH TIME I TOLD HIM TO MAINTAIN VIS SEP.
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.