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ZID controller experienced operational error at FL220 when descending aircraft through occupied altitude.
| Attributes | |
| ACN | 755023 |
| Time | |
| Date | 200709 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : tvt.vor |
| State Reference | OH |
| Altitude | msl single value : 22000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet 700 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Person 2 | |
| Qualification | controller : radar |
| Experience | controller radar : 20 controller time certified in position1 : 2 controller time certified in position2 : 3 |
| ASRS Report | 755023 |
| Events | |
| Anomaly | conflict : airborne less severe 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 : 21480 vertical : 800 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
After clearing traffic; I descended air carrier Y to 15000 ft; overlooking traffic at FL220 (air carrier X). After seeing conflict; I turned air carrier Y to the right and descended air carrier X; who advised me he was climbing in response to an RA.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED OPERROR AT FL220 WHEN DESCENDING ACFT THROUGH OCCUPIED ALT.
Narrative: AFTER CLRING TFC; I DSNDED ACR Y TO 15000 FT; OVERLOOKING TFC AT FL220 (ACR X). AFTER SEEING CONFLICT; I TURNED ACR Y TO THE R AND DSNDED ACR X; WHO ADVISED ME HE WAS CLBING IN RESPONSE TO AN RA.
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.