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ZID controller experienced operational error at approximately FL270 when issuing descent clearance through occupied altitude.
| Attributes | |
| ACN | 672014 |
| Time | |
| Date | 200509 |
| Place | |
| Locale Reference | navaid : ape.vortac |
| State Reference | OH |
| Altitude | msl bound lower : 27000 msl bound upper : 28000 |
| Environment | |
| Weather Elements | Thunderstorm |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 200 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Falcon 20FJF/20C/20D/20E/20F |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 13 controller time certified in position1 : 5 |
| ASRS Report | 672014 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar oversight : supervisor |
| Qualification | controller : radar |
| Experience | controller radar : 17 controller supervisory : 3 |
| ASRS Report | 672259 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera other controllerb other other : 3 |
| Resolutory Action | controller : issued alert controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 15000 vertical : 600 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I had just sat down at the sector (4 mins into session; aedp activated). I was not entirely settled in at the sector. I recognized the 2 aircraft as traffic and put a circle around the one target. The next time around in my scan; I recognized that I needed to start the CRJ2 down for cvg but forgot about the other traffic. After descending the CRJ2; I went on with my scan. When I got back to the CRJ2; I recognized the mistake; but it was too late to maintain separation. In the future; I will be extra careful when I have just sat down and have not become 'settled' at the sector.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED OPERROR AT APPROX FL270 WHEN ISSUING DSCNT CLRNC THROUGH OCCUPIED ALT.
Narrative: I HAD JUST SAT DOWN AT THE SECTOR (4 MINS INTO SESSION; AEDP ACTIVATED). I WAS NOT ENTIRELY SETTLED IN AT THE SECTOR. I RECOGNIZED THE 2 ACFT AS TFC AND PUT A CIRCLE AROUND THE ONE TARGET. THE NEXT TIME AROUND IN MY SCAN; I RECOGNIZED THAT I NEEDED TO START THE CRJ2 DOWN FOR CVG BUT FORGOT ABOUT THE OTHER TFC. AFTER DSNDING THE CRJ2; I WENT ON WITH MY SCAN. WHEN I GOT BACK TO THE CRJ2; I RECOGNIZED THE MISTAKE; BUT IT WAS TOO LATE TO MAINTAIN SEPARATION. IN THE FUTURE; I WILL BE EXTRA CAREFUL WHEN I HAVE JUST SAT DOWN AND HAVE NOT BECOME 'SETTLED' AT THE SECTOR.
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.