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ZLC controller experienced operational error near shr airport when clearing an arrival for an ILS; but forgetting about a released/airborne conflicting IFR aircraft.
| Attributes | |
| ACN | 750023 |
| Time | |
| Date | 200708 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : shr.airport |
| State Reference | WY |
| Altitude | msl single value : 9500 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zlc.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Citation I |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zlc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| ASRS Report | 750023 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 9000 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
E120 was given a departure clearance off shr when I realized the conflict. I asked the E120 for a position; then got him radar. I issued traffic; the citation reported aircraft in sight. Separation was lost (less than 5 mi/1000 ft). Contributing factors: at the time I issued the clearance I was separating other aircraft with vectors. When the E120 called initially; I couldn't hear him. He said he was airborne but I didn't hear that and this aircraft normally calls off the ground.
Original NASA ASRS Text
Title: ZLC CTLR EXPERIENCED OPERROR NEAR SHR ARPT WHEN CLRING AN ARR FOR AN ILS; BUT FORGETTING ABOUT A RELEASED/AIRBORNE CONFLICTING IFR ACFT.
Narrative: E120 WAS GIVEN A DEP CLRNC OFF SHR WHEN I REALIZED THE CONFLICT. I ASKED THE E120 FOR A POS; THEN GOT HIM RADAR. I ISSUED TFC; THE CITATION RPTED ACFT IN SIGHT. SEPARATION WAS LOST (LESS THAN 5 MI/1000 FT). CONTRIBUTING FACTORS: AT THE TIME I ISSUED THE CLRNC I WAS SEPARATING OTHER ACFT WITH VECTORS. WHEN THE E120 CALLED INITIALLY; I COULDN'T HEAR HIM. HE SAID HE WAS AIRBORNE BUT I DIDN'T HEAR THAT AND THIS ACFT NORMALLY CALLS OFF THE GND.
Data retrieved from NASA's ASRS site as of January 2009 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.