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Aircraft entered adjacent facility airspace and conflicted with another aircraft resulting in less than standard separation.
| Attributes | |
| ACN | 120777 |
| Time | |
| Date | 198908 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : pub |
| State Reference | CO |
| Altitude | msl bound lower : 12000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | other |
| Make Model Name | Small Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | enroute airway : zdv |
| 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 : departure |
| Qualification | controller : radar |
| Experience | controller radar : 8 controller supervisory : 1 |
| ASRS Report | 120777 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : military |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Miss Distance | horizontal : 9000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I assumed responsibility for the position 12 mins prior to error. Aircraft was idented off end of runway 26R. Issued 120 degree heading till receiving tbe VORTAC proceed direct, climb and maintain 12000'. I did not realize at this time that aircraft did not tag up. I then became too involved in identing an aircraft that departed requesting IFR clearance eastbound. During my scan I realized I lost track of #1 aircraft and took steps to find it. When I was able to locate #1 aircraft, it had penetrated ZDV airspace untagged and I initiated a manual handoff which ZDV took and advised he had #1 aircraft just past another aircraft nwbnd at same altitude. At this time (just a few hours after the error) I feel my 2 biggest errors were not ensuring data tag and priority of duties in relation to handling the VFR/IFR departure going east.
Original NASA ASRS Text
Title: ACFT ENTERED ADJACENT FAC AIRSPACE AND CONFLICTED WITH ANOTHER ACFT RESULTING IN LESS THAN STANDARD SEPARATION.
Narrative: I ASSUMED RESPONSIBILITY FOR THE POS 12 MINS PRIOR TO ERROR. ACFT WAS IDENTED OFF END OF RWY 26R. ISSUED 120 DEG HDG TILL RECEIVING TBE VORTAC PROCEED DIRECT, CLB AND MAINTAIN 12000'. I DID NOT REALIZE AT THIS TIME THAT ACFT DID NOT TAG UP. I THEN BECAME TOO INVOLVED IN IDENTING AN ACFT THAT DEPARTED REQUESTING IFR CLRNC EBND. DURING MY SCAN I REALIZED I LOST TRACK OF #1 ACFT AND TOOK STEPS TO FIND IT. WHEN I WAS ABLE TO LOCATE #1 ACFT, IT HAD PENETRATED ZDV AIRSPACE UNTAGGED AND I INITIATED A MANUAL HDOF WHICH ZDV TOOK AND ADVISED HE HAD #1 ACFT JUST PAST ANOTHER ACFT NWBND AT SAME ALT. AT THIS TIME (JUST A FEW HRS AFTER THE ERROR) I FEEL MY 2 BIGGEST ERRORS WERE NOT ENSURING DATA TAG AND PRIORITY OF DUTIES IN RELATION TO HANDLING THE VFR/IFR DEP GOING E.
Data retrieved from NASA's ASRS site as of August 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.