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ZID supervisor controller described operational error at approximately FL320 when controller descended aircraft through occupied altitude.
| Attributes | |
| ACN | 702237 |
| Time | |
| Date | 200606 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zzz.artcc |
| State Reference | US |
| Altitude | msl single value : 32000 |
| Environment | |
| Flight Conditions | Mixed |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zzz.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | oversight : supervisor |
| Qualification | controller : radar |
| Experience | flight time total : 30 |
| ASRS Report | 702237 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance controller : issued alert |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 18600 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X descended by radar controller from FL330. D-side pointed out traffic at FL320. Controller issued vectors; but separation was lost. Sector traffic was moderate with some WX affecting operation.
Original NASA ASRS Text
Title: ZID SUPVR CTLR DESCRIBED OPERROR AT APPROX FL320 WHEN CTLR DSNDED ACFT THROUGH OCCUPIED ALT.
Narrative: ACFT X DSNDED BY RADAR CTLR FROM FL330. D-SIDE POINTED OUT TFC AT FL320. CTLR ISSUED VECTORS; BUT SEPARATION WAS LOST. SECTOR TFC WAS MODERATE WITH SOME WX AFFECTING OP.
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.