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Less than standard separation occurred between a climbing outbound aircraft and inbound aircraft level at 5000'.
| Attributes | |
| ACN | 150163 |
| Time | |
| Date | 199006 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 5000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Light Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 23 |
| ASRS Report | 150163 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : non radar |
| Experience | controller radar : 8 |
| ASRS Report | 150162 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 6000 vertical : 200 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Small transport was climbing to 12000' off dfw on another controller's frequency in my airspace with my approval. Light transport was in level flight in my airspace on another controller's frequency to which I had changed him. The 2 aircraft passed 1 NM horizontal, 200' vertical. Both aircraft saw the other when approximately 2 NM apart. Small transport reported making a turn and descending. I thought that the other 2 controllers involved had established visibility sep, therefore I made no report at the time. The first knowledge that I had that an error had occurred was on 6/xx/90, and confirmed on 6/xy/90.
Original NASA ASRS Text
Title: LESS THAN STANDARD SEPARATION OCCURRED BETWEEN A CLIMBING OUTBOUND ACFT AND INBOUND ACFT LEVEL AT 5000'.
Narrative: SMT WAS CLBING TO 12000' OFF DFW ON ANOTHER CTLR'S FREQ IN MY AIRSPACE WITH MY APPROVAL. LTT WAS IN LEVEL FLT IN MY AIRSPACE ON ANOTHER CTLR'S FREQ TO WHICH I HAD CHANGED HIM. THE 2 ACFT PASSED 1 NM HORIZ, 200' VERT. BOTH ACFT SAW THE OTHER WHEN APPROX 2 NM APART. SMT RPTED MAKING A TURN AND DSNDING. I THOUGHT THAT THE OTHER 2 CTLRS INVOLVED HAD ESTABLISHED VIS SEP, THEREFORE I MADE NO RPT AT THE TIME. THE FIRST KNOWLEDGE THAT I HAD THAT AN ERROR HAD OCCURRED WAS ON 6/XX/90, AND CONFIRMED ON 6/XY/90.
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.